$ query “AS12271” --type=asn → 1 result(s)

AS12271 · TWC-12271-NYC

Charter Communications Inc

AS12271 belongs to Charter Communications Inc and is a mid-size transit provider, established in the United States in 2000. The system announces an impressive 2.9 million IPv4 addresses, including a /15, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Australia.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 09, 2000
Last Changed
March 04, 2026
Last Seen
April 28, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
107 / 101
IPv6 Prefixes (raw / aggregated)
8 / 7
IPv4 Addresses
2 856 448
Largest IPv4 Prefix
/15 (131 072 addresses)
Largest IPv6 Prefix
/28
Geolocated Countries
🇺🇸 United States (2 901 984 IPs), 🇦🇺 Australia (91 392 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 37 flagged IPs out of 2 856 448 total (0.00%)

Connectivity Summary

Upstream Providers
2 upstreams providing transit
Downstream Customers
54 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
61 unique BGP neighbors
Reach
55 networks in customer cone

Upstream Providers (2)

Prefix Lists

IPv4 Prefixes (107 total)

  • 74.72.0.0/15 (131 072 addresses (/15 prefix))
  • 98.14.0.0/15 (131 072 addresses (/15 prefix))
  • 98.12.0.0/16 (65 536 addresses (/16 prefix))
  • 74.66.0.0/16 (65 536 addresses (/16 prefix))
  • 68.174.0.0/16 (65 536 addresses (/16 prefix))
  • 184.152.0.0/16 (65 536 addresses (/16 prefix))
  • 68.173.0.0/16 (65 536 addresses (/16 prefix))
  • 24.90.0.0/16 (65 536 addresses (/16 prefix))
  • 67.254.0.0/16 (65 536 addresses (/16 prefix))
  • 172.254.0.0/16 (65 536 addresses (/16 prefix))
  • 67.250.0.0/16 (65 536 addresses (/16 prefix))
  • 149.89.0.0/16 (65 536 addresses (/16 prefix))
  • 69.206.0.0/16 (65 536 addresses (/16 prefix))
  • 67.245.0.0/16 (65 536 addresses (/16 prefix))
  • 67.243.0.0/16 (65 536 addresses (/16 prefix))
  • 72.229.0.0/16 (65 536 addresses (/16 prefix))
  • 66.108.0.0/16 (65 536 addresses (/16 prefix))
  • 74.64.0.0/16 (65 536 addresses (/16 prefix))
  • 50.74.0.0/16 (65 536 addresses (/16 prefix))
  • 74.71.0.0/16 (65 536 addresses (/16 prefix))
  • 47.230.0.0/16 (65 536 addresses (/16 prefix))
  • 74.68.0.0/16 (65 536 addresses (/16 prefix))
  • 24.193.0.0/16 (65 536 addresses (/16 prefix))
  • 24.103.0.0/17 (32 768 addresses (/17 prefix))
  • 68.175.0.0/17 (32 768 addresses (/17 prefix))
  • 24.161.0.0/17 (32 768 addresses (/17 prefix))
  • 98.0.128.0/17 (32 768 addresses (/17 prefix))
  • 66.65.0.0/17 (32 768 addresses (/17 prefix))
  • 72.231.0.0/17 (32 768 addresses (/17 prefix))
  • 98.7.0.0/17 (32 768 addresses (/17 prefix))
  • 98.13.128.0/17 (32 768 addresses (/17 prefix))
  • 142.105.0.0/17 (32 768 addresses (/17 prefix))
  • 72.227.128.0/17 (32 768 addresses (/17 prefix))
  • 72.226.0.0/17 (32 768 addresses (/17 prefix))
  • 24.168.0.0/17 (32 768 addresses (/17 prefix))
  • 72.225.128.0/17 (32 768 addresses (/17 prefix))
  • 142.255.0.0/17 (32 768 addresses (/17 prefix))
  • 158.222.128.0/17 (32 768 addresses (/17 prefix))
  • 69.202.128.0/17 (32 768 addresses (/17 prefix))
  • 69.203.0.0/17 (32 768 addresses (/17 prefix))
  • 184.74.128.0/17 (32 768 addresses (/17 prefix))
  • 69.201.128.0/17 (32 768 addresses (/17 prefix))
  • 69.193.128.0/17 (32 768 addresses (/17 prefix))
  • 184.75.0.0/17 (32 768 addresses (/17 prefix))
  • 184.153.0.0/17 (32 768 addresses (/17 prefix))
  • 24.164.128.0/18 (16 384 addresses (/18 prefix))
  • 66.65.128.0/18 (16 384 addresses (/18 prefix))
  • 208.105.0.0/18 (16 384 addresses (/18 prefix))
  • 24.102.64.0/18 (16 384 addresses (/18 prefix))
  • 108.176.128.0/18 (16 384 addresses (/18 prefix))
  • and 51 more

IPv6 Prefixes (8 total)

  • 2603:7000::/28
  • 2600:6000::/32
  • 2603:90be::/32
  • 2604:2000::/32
  • 2602:107:6300::/40
  • 2602:107:e400::/40
  • 2600:6c7f:9360::/44