cdn.socket.io - urlscan.io

Summary

This website contacted 2 IPs in 1 countries across 1 domains to perform 2 HTTP transactions. The main IP is 18.245.31.89, located in United States and belongs to AMAZON-02, US. The main domain is cdn.socket.io. The Cisco Umbrella rank of the primary domain is 38886. 12yr old
TLS certificate: Issued by Amazon RSA 2048 M03 on August 18th 2025. Valid for: 1yr.

This is the only time cdn.socket.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address		AS Autonomous System
2	18.245.31.89 18.245.31.89		16509 (AMAZON-02) (AMAZON-02)
2	2

2 18.245.31.89 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-245-31-89.fra56.r.cloudfront.net

cdn.socket.io 12yr old	Domain lookup VirusTotal SecurityTrails crt.sh Domaintools

	Apex Domain Subdomains	Transfer
2	socket.io cdn.socket.io — Cisco Umbrella Rank: 38886 12yr old	31 KB
2	1

	Domain	Requested by
2	cdn.socket.io
2	1

This site contains links to these domains. Also see Links.

Domain
vercel.com

Subject Issuer	Validity	Valid
cdn.socket.io Amazon RSA 2048 M03	`2025-08-18` - `2026-09-14`	1yr	crt.sh

This page contains 1 frames:

Primary Page: https://cdn.socket.io/
Frame ID: 9FAB97A0266D61867CABFC35C2CC3845
Requests: 4 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Files within /

Page URL History Show full URLs

http://cdn.socket.io/ HTTP 307
https://cdn.socket.io/ Page URL

Page Statistics

2
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

2
IPs

1
Countries

31 kB
Transfer

31 kB
Size

0
Cookies

1 Outgoing links

These are links going to different origins than the main page.

URL: https://vercel.com/docs/edge-network/directory-listing
Title: What's this?

Search URL Search Domain Scan URL

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

http://cdn.socket.io/ HTTP 307
https://cdn.socket.io/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

2 HTTP transactions
2 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2

200

Primary Request / Show response
cdn.socket.io/
Redirect Chain

http://cdn.socket.io/
https://cdn.socket.io/

30 KB
30 KB

386ms
147ms

Document
text/html

18.245.31.89
AMAZON-02

General

Check archive.org

Download Go to

Full URL

https://cdn.socket.io/

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

18.245.31.89 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-245-31-89.fra56.r.cloudfront.net

Software

Vercel /

Resource Hash

9b6d7fd1ecd621fdbddf31e3a0b99dff65403b5358d4c75fd60c3bdcb444bee8

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Response headers

cache-control: public, max-age=0, must-revalidate
content-length: 30819
date: Mon, 19 Jan 2026 06:57:01 GMT
server: Vercel
strict-transport-security: max-age=63072000
via: 1.1 04d30d89cfeb7f513dc1f5b2d3c605d2.cloudfront.net (CloudFront)
x-amz-cf-id: u1KT5BFPxyQWN7bQpMy412aPL37YAld-pkIx4KBN8bu59HW1TmObSA==
x-amz-cf-pop: FRA56-P8
x-cache: Miss from cloudfront
x-vercel-id: fra1::4ggj2-1768805821422-a987cf5bc1d1

Redirect headers

Location: https://cdn.socket.io/
Non-Authoritative-Reason: HttpsUpgrades

GET
DATA 200
OK truncated
/ 733 B
0 Image
image/svg+xml

General

Check archive.org

Download Go to Show image

Full URL: data:truncated
Protocol: DATA
Server: -, , ASN (),
Reverse DNS
Software: /
Resource Hash: 453e646a7f1a7c170b49bad28b137b41d5d30fb8c4ab3118316fc89a16e7982d

Request headers

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
Referer

Response headers

Content-Type: image/svg+xml

GET
DATA 200
OK truncated
/ 293 B
0 Image
image/svg+xml

General

Check archive.org

Download Go to Show image

Full URL: data:truncated
Protocol: DATA
Server: -, , ASN (),
Reverse DNS
Software: /
Resource Hash: 86cceac32113f79f22347fef769961ea2192523e3bfecc245934aa66605cedcc

Request headers

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
Referer

Response headers

Content-Type: image/svg+xml

GET
H2 404 favicon.ico
cdn.socket.io/ 79 B
456 B 97ms
97ms Other
text/plain 18.245.31.89
AMAZON-02

General

Check archive.org

Download Go to

Full URL

https://cdn.socket.io/favicon.ico

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

18.245.31.89 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-18-245-31-89.fra56.r.cloudfront.net

Software

Vercel /

Resource Hash

a41e411636acd976e68d3b474266a10673784781566d78197324808506f9b397

Security Headers

Name	Value
Strict-Transport-Security	max-age=63072000

Request headers

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36
Referer: https://cdn.socket.io/

Response headers

strict-transport-security: max-age=63072000
cache-control: public, max-age=31536000, immutable
x-vercel-error: NOT_FOUND
age: 140158
via: 1.1 04d30d89cfeb7f513dc1f5b2d3c605d2.cloudfront.net (CloudFront)
x-cache: Error from cloudfront
content-length: 79
x-amz-cf-id: k5JlM1q2pvA38A2qQf-uNAM31pEaiK8dJTuvpbRUuXitGMB6Y2OS6Q==
date: Sat, 17 Jan 2026 16:01:03 GMT
content-type: text/plain; charset=utf-8
x-amz-cf-pop: FRA56-P8
server: Vercel
x-vercel-id: fra1::dr67l-1768665663598-26264a1178a0

Verdicts & Comments Add Verdict or Comment

0 JavaScript Window variables

These are the non-standard variables defined on the window object. These include var declarations and global functions and can be helpful in identifying possible client-side frameworks and code.

0 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

1 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
network	error	URL: https://cdn.socket.io/favicon.ico Message: Failed to load resource: the server responded with a status of 404 ()

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
Strict-Transport-Security	max-age=63072000

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

cdn.socket.io
18.245.31.89
453e646a7f1a7c170b49bad28b137b41d5d30fb8c4ab3118316fc89a16e7982d
86cceac32113f79f22347fef769961ea2192523e3bfecc245934aa66605cedcc
9b6d7fd1ecd621fdbddf31e3a0b99dff65403b5358d4c75fd60c3bdcb444bee8
a41e411636acd976e68d3b474266a10673784781566d78197324808506f9b397

cdn.socket.io 18.245.31.89 Public Scan Open in urlscan Pro

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page URL History Show full URLs

Page Statistics

2 Requests

100 %HTTPS

0 %IPv6

1 Domains

1 Subdomains

2 IPs

1 Countries

31 kBTransfer

31 kBSize

0 Cookies

1 Outgoing links

Page URL History

Redirected requests

2 HTTP transactions Everything HTML Script Fetch XHR CSS Image Font Expand all 2 data transactions

Request headers

Response headers

Redirect headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

0 JavaScript Window variables

0 Cookies

1 Console Messages

Security Headers

Indicators

cdn.socket.io
18.245.31.89 Public Scan Open in urlscan Pro

Screenshot
Live screenshot

Full Image

2
Requests

100 %
HTTPS

0 %
IPv6

1
Domains

1
Subdomains

2
IPs

1
Countries

31 kB
Transfer

31 kB
Size

0
Cookies

2 HTTP transactions
2 data transactions