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AS16787Charter Communications LLC

United StatesRegistryARIN

As of 26th September 2026, AS16787 (Charter Communications LLC), a network registered in the United States with ARIN, originates 78 IPv4 prefixes covering 150k addresses and 14 IPv6 prefixes. By IPv4 address space that makes it the 1,642nd-largest of the 79,516 networks we see originating IPv4, and the 470th-largest of 18,424 in the United States. It is seen behind 2 upstream networks, most often AS7843 (Spectrum (Charter)) and AS20115 (Spectrum (Charter)). 90% of its announcements have a valid RPKI ROA; 9 are RPKI-invalid. 90% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

78

IPv6 prefixes

14

IPv4 addresses

150k

IPv6 /64s

81.6B

Upstream graph

The networks AS16787 is seen behind, one and two hops out, drawn from real AS paths.

AS16787Toward the internet core
Upstream graph for AS16787: 4 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS16787Charter Communica…This networkAS7843Spectrum (Charter)AS20115Spectrum (Charter)AS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS16787 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS16787
NetworkCountryRelationshipPathsVantage pts
AS7843Spectrum (Charter)USPeer6,127145
AS20115Spectrum (Charter)USPeer471145

Prefixes

All 92

The largest blocks AS16787 originates, widest first.

Largest prefixes originated by AS16787
PrefixAddressesVisibility
47.234.0.0/1732.8k81/81
98.120.0.0/1816.4k81/81
65.185.192.0/198.2k81/81
96.37.160.0/198.2k81/81
24.24.96.0/204.1k81/81
24.28.208.0/204.1k81/81
24.33.32.0/204.1k81/81
24.33.48.0/204.1k81/81
66.61.128.0/204.1k81/81
71.85.80.0/204.1k81/81

Routing health

How AS16787'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

  • Valid90.2%83
  • Invalid9.8%9
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more90.2%83
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%9.8%9

Prefix sizes

IPv4 — 78 prefixes

IPv6 — 14 prefixes

  • /2868.7B × /647.1%1
  • /318.6B × /647.1%1
  • /324.3B × /647.1%1
  • /418.4M × /6421.4%3
  • /441M × /6450.0%7
  • /4865.5k × /647.1%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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