subnet.im

AS11427Charter Communications Inc

United StatesRegistryARINTypeEyeball

As of 27th September 2026, AS11427 (Charter Communications Inc), an access network registered in the United States with ARIN, originates 399 IPv4 prefixes covering 5.9M addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 119th-largest of the 79,525 networks we see originating IPv4, and the 36th-largest of 18,428 in the United States. It is seen behind 4 upstream networks, most often AS7843 (Spectrum (Charter)) and AS20115 (Spectrum (Charter)), and in front of 134 downstream networks. 98% of its announcements have a valid RPKI ROA; 1 is RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

399

IPv6 prefixes

17

IPv4 addresses

5.9M

IPv6 /64s

232B

Upstream graph

The networks AS11427 is seen behind, one and two hops out, drawn from real AS paths.

AS11427Toward the internet core
Upstream graph for AS11427: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS11427Charter Communica…This networkAS6453TATA Communicatio…AS7843Spectrum (Charter)AS20115Spectrum (Charter)AS27325Databank (fka. zC…AS8220COLTAS35280F5 Networks SARLAS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS3356Lumen (Level 3)AS6461Zayo Bandwidth

Networks observed one and two hops upstream of AS11427 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

278

adjacent networks

Upstreams
41%
Peers
14050%
Downstreams
13448%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS11427
NetworkCountryRelationshipPathsVantage pts
AS7843Spectrum (Charter)USPeer47,102145
AS20115Spectrum (Charter)USPeer4,750103
AS27325Databank (fka. zColo)USPeer3422
AS6453TATA Communications (America) IncUSPeer3030

Prefixes

All 416

The largest blocks AS11427 originates, widest first.

Largest prefixes originated by AS11427
PrefixAddressesVisibility
72.176.0.0/13524k80/81
70.112.0.0/14262k81/81
76.184.0.0/14262k81/81
173.172.0.0/14262k81/81
24.242.0.0/15131k81/81
35.146.0.0/15131k81/81
66.68.0.0/15131k81/81
67.10.0.0/15131k81/81
70.116.0.0/15131k81/81
70.122.0.0/15131k81/81

Routing health

How AS11427's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid97.8%407
  • Invalid0.2%1
  • No ROA1.9%8

Propagation

  • Globally propagated90% of full-feed peers or more99.8%415
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.2%1

Prefix sizes

IPv4 — 399 prefixes

IPv6 — 17 prefixes

  • /2868.7B × /6417.6%3
  • /324.3B × /6435.3%6
  • /4016.8M × /6417.6%3
  • /441M × /6411.8%2
  • /4865.5k × /6417.6%3

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn24.166.168.0/2124th Sept 2026
  • Withdrawn24.166.176.0/2024th Sept 2026
  • Withdrawn72.129.224.0/1924th Sept 2026
  • Withdrawn72.133.224.0/2024th Sept 2026
  • Withdrawn24.166.164.0/2223rd Sept 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.