Autonomous System

AS33667 Comcast Cable Communications, LLC

ISPActiveUnited StatesARIN

AS33667 (CMCS) is an ISP network operated by Comcast Cable Communications, LLC in United States, registered with ARIN. It has 40 IPv4 prefixes with 41,984 addresses and 56 IPv6 prefixes, which makes it the 4,663rd largest of 82,612 active autonomous systems by IPv4 space.

IPv4 addresses41,984in 40 prefixes
IPv6 prefixes56≈ 6.3 × 10²⁹ addresses
Size rank#4,663of 82,612 active ASNs
Abuser scoreLow0.32% of its addresses flagged · method

Details

OrganizationComcast Cable Communications, LLC
AS nameCMCS
Websitecomcast.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactabuse@comcast.net
Registered2005-02-16
Last updated2021-01-25

IPv4 prefixes

40 prefixes · 41,984 addresses
NetworkAddressesFirst – last address
9.142.96.0/198,1929.142.96.0 – 9.142.127.255
135.132.64.0/198,192135.132.64.0 – 135.132.95.255
9.142.48.0/204,0969.142.48.0 – 9.142.63.255
138.226.64.0/204,096138.226.64.0 – 138.226.79.255
138.226.48.0/212,048138.226.48.0 – 138.226.55.255
138.226.112.0/212,048138.226.112.0 – 138.226.119.255
138.226.192.0/212,048138.226.192.0 – 138.226.199.255
135.132.72.0/221,024135.132.72.0 – 135.132.75.255
135.132.76.0/221,024135.132.76.0 – 135.132.79.255
138.226.196.0/221,024138.226.196.0 – 138.226.199.255
9.142.118.0/235129.142.118.0 – 9.142.119.255
107.0.64.0/23512107.0.64.0 – 107.0.65.255
5.182.186.0/242565.182.186.0 – 5.182.186.255
5.182.193.0/242565.182.193.0 – 5.182.193.255
5.182.194.0/242565.182.194.0 – 5.182.194.255
5.182.195.0/242565.182.195.0 – 5.182.195.255
36.255.215.0/2425636.255.215.0 – 36.255.215.255
45.67.141.0/2425645.67.141.0 – 45.67.141.255
50.203.5.0/2425650.203.5.0 – 50.203.5.255
50.203.201.0/2425650.203.201.0 – 50.203.201.255
50.207.246.0/2425650.207.246.0 – 50.207.246.255
50.222.62.0/2425650.222.62.0 – 50.222.62.255
50.236.209.0/2425650.236.209.0 – 50.236.209.255
50.239.185.0/2425650.239.185.0 – 50.239.185.255
63.246.148.0/2425663.246.148.0 – 63.246.148.255
The 25 largest of 40. The API and the database have all of them.

IPv6 prefixes

56 prefixes
  • 2a0c:1900::/29
  • 2001:559:8b::/48
  • 2001:559:8c::/48
  • 2001:559:123::/48
  • 2001:559:13c::/48
  • 2001:559:1b1::/48
  • 2001:559:249::/48
  • 2001:559:2c1::/48
  • 2001:559:32d::/48
  • 2001:559:47c::/48
  • 2001:559:492::/48
  • 2001:559:5a2::/48
  • 2001:559:5de::/48
  • 2001:559:712::/48
  • 2001:559:75a::/48
  • 2001:559:7cb::/48
  • 2001:559:8091::/48
  • 2001:559:80a8::/48
  • 2001:559:8167::/48
  • 2001:559:8202::/48
  • 2001:559:82f6::/48
  • 2001:559:83e1::/48
  • 2001:559:845d::/48
  • 2001:559:8492::/48
  • 2001:559:859a::/48
The 25 largest of 56. The API and the database have all of them.

Query AS33667 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS33667&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS33667, with or without a key:

curl "https://api.ipapi.is/?q=9.142.96.1"

Other networks of Comcast Cable Communications, LLC

6 of 12
AS7922 Comcast Cable Communications, LLC68,337,664 IPv4 addressesAS20214 Comcast Cable Communications, LLC140,544 IPv4 addressesAS21508 Comcast Cable Communications, LLC70,400 IPv4 addressesAS33491 Comcast Cable Communications, LLC48,128 IPv4 addressesAS33651 Comcast Cable Communications, LLC47,872 IPv4 addressesAS7015 Comcast Cable Communications, LLC47,104 IPv4 addresses

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