AS3356
LEVEL3, US


Seen 20000+ times between December 1st, 2022 and December 1st, 2022.


General Info Open in Search

Geo United States (US) —
AS AS3356 - LEVEL3, US
Note: An IP might be announced by multiple ASs. This is not shown.
Registrar ARIN

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Direct hits
Summary of pages hosted on this ASN

Recent scans (10000 total) Show all

URL Age
f.c2r.ts.cdn.office.net 10 minutes
sync.1rx.io 31 minutes
targeting.unrulymedia.com 38 minutes
sclsnglssttldwn.com/user/?SID=f1e6b64f0558ecbbcc7f889dd07db7e5 an hour
wsjc2wrlqg5hstg7qidhhr7a3q2mscfz.e.ns1.sectionedge.com 2 hours

Incoming hits
Summary of pages that talked to this ASN

Recent scans (10000 total) Show all

URL Age
support.microsoft.com/en-gb/windows/windows-update-faq-8a903416-6f45-0718-f5c... 30 minutes
www.yahoo.com 32 minutes
support.microsoft.com/en-gb/windows/windows-update-faq-8a903416-6f45-0718-f5c... 32 minutes
simcast.com/?d=pl70.net&pcid=802&rid=152&a=0 35 minutes
www.amazonnsmile.com 43 minutes

Recent screenshots
Screenshots of pages hosted on this ASN

Related infrastructure
Summary of infrastructure which pages hosted on this ASN frequently talked to

Related screenshots
Screenshots of pages that talked to this ASN

WHOIS for AS3356


as-block:       AS3354 - AS3398
descr:          ASN block not managed by the RIPE NCC
remarks:        ------------------------------------------------------
remarks:
remarks:        aut-num objects within this block represent routing
remarks:        policy published in the RIPE Database
remarks:
remarks:        For registration information,
remarks:        you can find the whois server to query, or the
remarks:        IANA registry to query on this web page:
remarks:        http://www.iana.org/assignments/ipv4-address-space
remarks:
remarks:        You can access databases of other RIR's at:
remarks:
remarks:        AFRINIC (Africa)
remarks:        http://www.afrinic.net/ whois.afrinic.net
remarks:
remarks:        APNIC (Asia Pacific)
remarks:        http://www.apnic.net/ whois.apnic.net
remarks:
remarks:        ARIN (Northern America)
remarks:        http://www.arin.net/ whois.arin.net
remarks:
remarks:        LACNIC (Latin America and the Carribean)
remarks:        http://www.lacnic.net/ whois.lacnic.net
remarks:
remarks:        ------------------------------------------------------
mnt-by:         RIPE-DBM-MNT
created:        2021-02-16T15:27:03Z
last-modified:  2021-02-16T15:27:03Z
source:         RIPE

aut-num:        AS3356
as-name:        Level3
descr:          Level 3 Communications
admin-c:        LTHM
admin-c:        MATT69-RIPE
tech-c:         STUD1-RIPE
remarks:        ========================================================
remarks:        The size of the import/export data in this object has
remarks:        been causing problems for the RIPE routing registry
remarks:        system and has been affecting other users by
remarks:        significantly delaying their updates while updates to
remarks:        this object have been processed. This data has now
remarks:        been removed. Please perform a whois query against
remarks:        rr.Level3.net if you wish to see this information.
remarks:        ========================================================
remarks:
remarks:        ========================================================
remarks:
remarks:        Operational issues to noc@Level3.net
remarks:        Abuse reports to abuse@centurylinkservices.net
remarks:        Peering contact is peering@Level3.net
remarks:
remarks:        ========================================================
remarks:
remarks:        Level 3 does not allow any part of 4.0.0.0/8 to be
remarks:        multihomed.
remarks:
remarks:        If you are a customer who is currently using address
remarks:        space from 4.0.0.0/8 and if you need to multihome your
remarks:        network to another provider, please contact Level 3 for
remarks:        new address space which can be multihomed.
remarks:
remarks:        If you are a provider who has been asked to route a
remarks:        more-specific network block that is part of 4.0.0.0/8,
remarks:        please ask your customer to contact Level 3 to obtain
remarks:        a new network block.
remarks:
remarks:        Level 3 will not accept advertisements for any networks
remarks:        that are part of 4.0.0.0/8 from any non-customer peer.
remarks:
remarks:        Note that the import/export designations above are a
remarks:        simplification of our actual policies which cannot
remarks:        be properly described given the limitations of RPSL
remarks:        They would also be rather tedious to read if we
remarks:        denoted all of the common policy bits applied to every
remarks:        peer, so we have only noted the peer-specific bits.
remarks:
remarks:        We have also only documented our customer peers in this
remarks:        object at this time.
remarks:
remarks:        The following import actions are common to every
remarks:        Level 3 customer peering session:
remarks:
remarks:        - RFC1918 and other reserved networks and subnets are
remarks:        not permitted.
remarks:
remarks:        - Advertisements with reserved ASes in the path
remarks:        (ie 64512 - 65535) are not permitted.
remarks:
remarks:        - Prefixes shorter than /8 are not permitted.
remarks:
remarks:        - Advertisements containing the AS of a network with
remarks:        which we have a non-customer peering relationship
remarks:        are not permitted (ie customers are not allowed
remarks:        to advertise transit for Sprint, AT&T, etc).
remarks:
remarks:        - Advertisements tagged with our own "internal use only"
remarks:        communities (ie the city/country/region/etc communities
remarks:        outlined below) will have all of their communities
remarks:        stripped from them at ingress, and any communities
remarks:        meant to affect localpref, prepending, etc are thus
remarks:        ignored.
remarks:
remarks:        - All customer peering sessions are prefix-filtered
remarks:        inbound using a customer specified import policy
remarks:        pulled from any known public registry.
remarks:
remarks:        - Prefixes not matching the per-peer import policy
remarks:        as documented above are not permitted.
remarks:
remarks:        - Localpref will be set to 100 by default, subject
remarks:        to modification based on received communities as
remarks:        outlined below.
remarks:
remarks:        - A hard limit is placed on the number of routes a peer
remarks:        is allowed to announce to us. This number is based
remarks:        on their registered routes plus a bit of extra
remarks:        overhead.
remarks:
remarks:        The following import actions are common to every
remarks:        Level 3 non-customer peering session:
remarks:
remarks:        - RFC1918 and other reserved networks and subnets are
remarks:        not permitted.
remarks:
remarks:        - Advertisements with reserved ASes in the path
remarks:        (ie 64512 - 65535) are not permitted.
remarks:
remarks:        - Prefixes shorter than /8 or longer than /24 are
remarks:        not permitted.
remarks:
remarks:        - Any subnet of any Level 3 CIDR block (as documented
remarks:        in rs-Level3) is not accepted unless routing for the
remarks:        subnet in question has been explicitly requested by
remarks:        the multihomed customer in question. If you are a
remarks:        customer wishing to multihome a Level 3 CIDR block
remarks:        please contact the Technical Support Center at
remarks:        877-4LEVEL3 or through the customer online portal.
remarks:
remarks:        - Advertisements tagged with our own "internal use"
remarks:        or "customer use" communities (as outlined below)
remarks:        will have all of their communities stripped from them
remarks:        at ingress.
remarks:
remarks:        - MEDs are overwritten unless special arrangements
remarks:        have been made.
remarks:
remarks:        - Peers who register their routes with meaningful
remarks:        policies may have a prefix filter applied based on
remarks:        this policy.
remarks:
remarks:        - Localpref for non-customer peers is generally set
remarks:        to 86.
remarks:
remarks:        - A hard limit is placed on the number of routes a peer
remarks:        is allowed to announce to us. This number is based
remarks:        on their registered routes or on a historical view of
remarks:        the number of routes they have been advertising plus
remarks:        a bit of extra overhead.
remarks:
remarks:        The following export actions are common to every
remarks:        Level 3 peering session:
remarks:
remarks:        - RFC1918 and other reserved networks and subnets are
remarks:        not announced.
remarks:
remarks:        - Advertisements with reserved ASes in the path
remarks:        (ie 64512 - 65535) are not announced.
remarks:
remarks:        - Prefixes shorter than /8 or longer than /24 are
remarks:        not announced.
remarks:
remarks:        - Any subnet of any Level 3 CIDR block (as documented
remarks:        in rs-Level3) is not announced unless routing for the
remarks:        subnet in question has been explicitly requested by
remarks:        the multihomed customer in question.
remarks:
remarks:        - Suppression and prepend actions as outlined in the
remarks:        community list below are taken for announcements to
remarks:        non-customer peers.
remarks:
remarks:        ========================================================
remarks:
remarks:        Communities applied at ingress
remarks:
remarks:        ========================================================
remarks:
remarks:        --------------------------------------------------------
remarks:        prefix type communities
remarks:        --------------------------------------------------------
remarks:        3356:123 - Customer route
remarks:        3356:666 - Peer route
remarks:        --------------------------------------------------------
remarks:        error type communities
remarks:        --------------------------------------------------------
remarks:        3356:911 - "internal use" communities received from peer
remarks:        --------------------------------------------------------
remarks:        city communities (some cities not listed as they home off
remarks:        one of the below)
remarks:        --------------------------------------------------------
remarks:        3356:2001 - CHI1 - Chicago
remarks:        3356:2002 - SDG1 - San Diego
remarks:        3356:2003 - LAX1 - Los Angeles
remarks:        3356:2004 - DEN1 - Denver
remarks:        3356:2005 - PHI1 - Philadelphia
remarks:        3356:2006 - WDC1 - Washington DC
remarks:        3356:2007 - DET1 - Detroit
remarks:        3356:2008 - DAL1 - Dallas
remarks:        3356:2009 - SFO1 - San Francisco
remarks:        3356:2010 - NYC1 - New York City
remarks:        3356:2011 - SJO1 - San Jose
remarks:        3356:2012 - SEA1 - Seattle
remarks:        3356:2013 - ATL1 - Atlanta
remarks:        3356:2014 - HOU1 - Houston
remarks:        3356:2015 - BOS1 - Boston
remarks:        3356:2016 - MIN1 - Minneapolis
remarks:        3356:2017 - HON1 - Honolulu
remarks:        3356:2018 - WEE1 - Weehawken
remarks:        3356:2019 - BAL1 - Baltimore
remarks:        3356:2020 - CIN1 - Cincinnati
remarks:        3356:2021 - STM1 - Stamford
remarks:        3356:2022 - MIA1 - Miami
remarks:        3356:2023 - TMP1 - Tampa
remarks:        3356:2024 - ORL1 - Orlando
remarks:        3356:2025 - STL1 - St Louis
remarks:        3356:2026 - PHX1 - Phoenix
remarks:        3356:2027 - RCH1 - Richmond
remarks:        3356:2029 - SLC1 - Salt Lake City
remarks:        3356:2030 - SAC1 - Sacramento
remarks:        3356:2031 - RAL1 - Raleigh
remarks:        3356:2032 - SAT1 - San Antonio
remarks:        3356:2033 - LVG1 - Las Vegas
remarks:        3356:2034 - CLT1 - Charlotte
remarks:        3356:2035 - CLE1 - Cleveland
remarks:        3356:2036 - OAK1 - Oakland
remarks:        3356:2038 - TUS1 - Tustin
remarks:        3356:2039 - NWR1 - Newark
remarks:        3356:2040 - PIT1 - Pittsburgh
remarks:        3356:2041 - KAC1 - Kansas City
remarks:        3356:2042 - CHI2 - Chicago 2
remarks:        3356:2043 - NYC2 - New York City 2
remarks:        3356:2044 - LOU1 - Louisville
remarks:        3356:2045 - NVL1 - Nashville
remarks:        3356:2046 - BUF1 - Buffalo
remarks:        3356:2047 - TOR2 - Toronto 2
remarks:        3356:2048 - MON2 - Montreal 2
remarks:        3356:2049 - SYR2 - Syracuse 2
remarks:        3356:2050 - WDC12 - Washington DC 12
remarks:        3356:2051 - SJO5 - San Jose 5
remarks:        3356:2052 - TOR1 - Toronto 1
remarks:        3356:2053 - POR1 - Portland
remarks:        3356:2054 - MEM1 - Memphis
remarks:        3356:2055 - TUL2 - Tulsa
remarks:        3356:2056 - NYC6 - New York City
remarks:        3356:2057 - WDC111 - Washington DC (Washington111
remarks:        3356:2058 - CHO1 - Charlottesville Virginia
remarks:        3356:2064 - LON1 - London
remarks:        3356:2065 - FRF1 - Frankfurt
remarks:        3356:2066 - PAR1 - Paris
remarks:        3356:2067 - AMS1 - Amsterdam
remarks:        3356:2068 - BRU1 - Brussels
remarks:        3356:2069 - DUS1 - Dusseldorf
remarks:        3356:2070 - HAM1 - Hamburg
remarks:        3356:2071 - BER1 - Berlin
remarks:        3356:2072 - MUN1 - Munich
remarks:        3356:2073 - LON2 - London 2
remarks:        3356:2074 - MLN1 - Milan
remarks:        3356:2075 - ZUR1 - Zurich
remarks:        3356:2076 - STK1 - Stockholm
remarks:        3356:2077 - MAD2 - Madrid 2
remarks:        3356:2078 - GEN1 - Geneva
remarks:        3356:2079 - MAN1 - Manchester
remarks:        3356:2080 - DUB1 - Dublin
remarks:        3356:2081 - COP1 - Copenhagen
remarks:        3356:2082 - VIE1 - Vienna
remarks:        3356:2083 - PRG1 - Prague
remarks:        3356:2084 - WAW1 - Warsaw
remarks:        3356:2085 - VAL3 - Valencia 3
remarks:        3356:2086 - BCL1 - Barcelona
remarks:        3356:2087 - SOF1 - Sofia
remarks:        3356:2088 - BCH1 - Bucharest
remarks:        3356:2089 - BDP1 - Budapest
remarks:        3356:2090 - MRS1 - Marseille
remarks:        3356:2091 - COP2 - Copenhagen 2
remarks:        3356:2092 - OSL1 - Oslo
remarks:        3356:2093 - BTS1 - Bratislava
remarks:        3356:2094 - HEL1 - Helsinki
remarks:        3356:2095 - DUB3 - Dublin 3
remarks:        3356:2096 - WAW3 - Warsaw 3
remarks:        3356:2097 - LUX1 - Luxembourg 1
remarks:        3356:2098 - TLS1 - Toulouse 1
remarks:        3356:2099 - LYS1 - Lyon 1
remarks:        3356:2100 - JED1 - Jeddah 1
remarks:        3356:2101 - ZAG1 - Zagreb 1
remarks:        3356:2102 - LJU1 - Ljubljana 1
remarks:        3356:2103 - MAD1 - Madrid 1
remarks:        3356:2104 - DJB1 - Djibouti 1
remarks:        3356:2105 - LON16 - London 16
remarks:        3356:2106 - LON15 - London 15
remarks:        3356:2107 - CPT2 - CapeTown2
remarks:        3356:2108 - JNB2 - Johannesburg2
remarks:        3356:2109 - XKE3 - Kenya3
remarks:        3356:2110 - XAE3 - UnitedArabEmirates3
remarks:        3356:2111 - STK2 - Stockholm2
remarks:        3356:2112 - MRS2 - Marseille2
remarks:        3356:2113 - XEE2 - Estonia2
remarks:        3356:2114 - PAR10 - Paris10
remarks:        3356:2115 - SOF2 - Sofia2
remarks:        3356:2116 - XRU2 - Russia2
remarks:        3356:2117 - XIT2 - Italy2
remarks:        3356:2118 - XRS2 - RepublicOfSerbia2
remarks:        3356:2119 - OSL2 - Oslo2
remarks:        3356:2120 - MAN2 - Manchester2
remarks:        3356:2121 - MLN2 - Milan2
remarks:        3356:2122 - XAE2 - UnitedArabEmirates2
remarks:        3356:2123 - XIS2 - Iceland2
remarks:        3356:2124 - PAR7 - Paris7
remarks:        3356:2125 - LON4 - London4
remarks:        3356:2126 - XIS4 - Iceland4
remarks:        3356:2127 - IST2 - Istanbul2
remarks:        3356:2128 - LDS1 - Leeds1
remarks:        3356:2129 - BHE1 - Birmingham1
remarks:        3356:2130 - TLV1 - TelAviv1
remarks:        3356:2131 - ZUR3 - Zurich3
remarks:        3356:2132 - LON14 - London14
remarks:        3356:2133 - ANK1 - Ankara1
remarks:        3356:2171 - HKG3 - HongKong3
remarks:        3356:2172 - SNG3 - Singapore3
remarks:        3356:2173 - SYD1 - Sydney1
remarks:        3356:2174 - TOK4 - Tokyo4
remarks:        3356:2190 - Sao Paulo
remarks:        --------------------------------------------------------
remarks:        country communities
remarks:        --------------------------------------------------------
remarks:        3356:500 - UK
remarks:        3356:501 - Germany
remarks:        3356:502 - France
remarks:        3356:503 - Netherlands
remarks:        3356:504 - Belgium
remarks:        3356:505 - Italy
remarks:        3356:506 - Switzerland
remarks:        3356:507 - Sweden
remarks:        3356:508 - Spain
remarks:        3356:509 - Ireland
remarks:        3356:510 - Denmark
remarks:        3356:511 - Austria
remarks:        3356:512 - Czech Republic
remarks:        3356:513 - Poland
remarks:        3356:514 - Bulgaria
remarks:        3356:515 - Romania
remarks:        3356:516 - Hungary
remarks:        3356:517 - Norway
remarks:        3356:518 - Slovakia
remarks:        3356:519 - Finland
remarks:        3356:520 - Luxembourg
remarks:        3356:521 - Croatia
remarks:        3356:522 - Slovenia
remarks:        3356:523 - Estonia
remarks:        3356:524 - Serbia
remarks:        3356:525 - Iceland
remarks:        3356:550 - Saudi Arabia
remarks:        3356:551 - Djibouti
remarks:        3356:552 - South Africa
remarks:        3356:553 - United Arab Emirates
remarks:        3356:554 - Russia
remarks:        3356:555 - Kenya
remarks:        3356:556 - Turkey
remarks:        3356:557 - Israel
remarks:        3356:575 - USA
remarks:        3356:576 - Canada
remarks:        3356:577 - Mexico
remarks:        3356:701 - China
remarks:        3356:702 - Australia
remarks:        3356:703 - Singapore
remarks:        3356:704 - Japan
remarks:        3356:800 - Brazil
remarks:        3356:801 - Argentina
remarks:
remarks:        --------------------------------------------------------
remarks:        regional communities
remarks:        --------------------------------------------------------
remarks:        3356:2 - Europe
remarks:        3356:3 - North America
remarks:        3356:4 - APAC
remarks:        3356:5 - LATAM
remarks:
remarks:        ========================================================
remarks:
remarks:        Communities accepted from customers
remarks:
remarks:        ========================================================
remarks:
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering (TE) notes
remarks:        --------------------------------------------------------
remarks:        Communities allow suppress or prepend to peer AS, where
remarks:        - peer AS has a peering connection to Level 3
remarks:        - peer AS is not a customer of Level 3
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering communities - Suppression
remarks:        --------------------------------------------------------
remarks:        64960:XXX - announce to AS XXX if 65000:0
remarks:        65000:0 - announce to customers but not to peers
remarks:        65000:XXX - do not announce at peerings to AS XXX
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering communities - Prepending
remarks:        --------------------------------------------------------
remarks:        65001:0 - prepend once to all peers
remarks:        65001:XXX - prepend once at peerings to AS XXX
remarks:        65002:0 - prepend twice to all peers
remarks:        65002:XXX - prepend twice at peerings to AS XXX
remarks:        65003:0 - prepend 3x to all peers
remarks:        65003:XXX - prepend 3x at peerings to AS XXX
remarks:        65004:0 - prepend 4x to all peers
remarks:        65004:XXX - prepend 4x at peerings to AS XXX
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering communities - Regional
remarks:        --------------------------------------------------------
remarks:        Will only work for regional peers
remarks:        64980:0 - announce to customers but not to EU peers
remarks:        64981:0 - prepend once to all EU peers
remarks:        64982:0 - prepend twice to all EU peers
remarks:        64983:0 - prepend 3x to all EU peers
remarks:        64984:0 - prepend 4x to all EU peers
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering communities - LocalPref
remarks:        --------------------------------------------------------
remarks:        3356:70 - set local preference to 70
remarks:        3356:80 - set local preference to 80
remarks:        3356:90 - set local preference to 90
remarks:        --------------------------------------------------------
remarks:        customer traffic engineering communities - Blackhole
remarks:        --------------------------------------------------------
remarks:        3356:9999 - blackhole (discard) traffic
remarks:
remarks:        Traffic destined for any prefixes tagged with this
remarks:        community will be discarded at ingress to the Level 3
remarks:        network. The prefix must be one permitted by the
remarks:        customer's existing ingress BGP filter.
remarks:        Support@Level3.com may need to be contacted to allow
remarks:        in some cases. For some router vendors the peering
remarks:        must be changed to an eBGP multihop session on the Level
remarks:        3 side of the connection.
remarks:
remarks:        Please contact noc@Level3.com with any questions
remarks:        regarding this functionality.
remarks:        --------------------------------------------------------
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************
status:         OTHER
mnt-by:         LEVEL3-MNT
created:        2002-09-18T15:36:24Z
last-modified:  2020-04-08T11:07:34Z
source:         RIPE-NONAUTH

role:           LEVEL3 Hostmaster
address:        Level (3) Communications
address:        260-266 GOSWELL ROAD
address:        LONDON
remarks:        trouble: Abuse reports to abuse@centurylinkservices.net
admin-c:        STUD1-RIPE
admin-c:        NZ74-RIPE
tech-c:         LTEE
nic-hdl:        LTHM
remarks:        Peering issues to peering@centurylink.com
mnt-by:         LEVEL3-MNT
created:        2002-07-09T10:25:27Z
last-modified:  2020-07-27T09:06:54Z
source:         RIPE # Filtered

person:         Matthew Duncalf
address:        Level (3) Communications
address:        Level 3 House
address:        66 Prescot Street
address:        London, E1 8HG UK
phone:          +44 20 7961 8468
fax-no:         +44 20 7864 0338
nic-hdl:        MATT69-RIPE
mnt-by:         LEVEL3-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2001-09-22T07:30:37Z
source:         RIPE # Filtered

person:         Martin Hindley
address:        CenturyLink
address:        10 Fleet Place
address:        London
remarks:        http://www.centurylink.com/
phone:          +44-171-8640746
fax-no:         +44-171-8640338
nic-hdl:        STUD1-RIPE
mnt-by:         LEVEL3-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2020-12-16T09:55:28Z
source:         RIPE # Filtered