subnet.im

AS20115Spectrum (Charter)

United StatesRegistryARINTypeEyeball

As of 10th November 2026, AS20115 (Spectrum (Charter)), an access network registered in the United States with ARIN, originates 2,372 IPv4 prefixes covering 13.4M addresses and 2,378 IPv6 prefixes. By IPv4 address space that makes it the 56th-largest of the 80,733 networks we see originating IPv4, and the 18th-largest of 18,751 in the United States. It is seen behind 27 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS7843 (Spectrum (Charter)), and in front of 135 downstream networks. 98% of its announcements have a valid RPKI ROA; 14 are RPKI-invalid. 53% of its routes reach at least 90% of full-feed peers, and 15 prefixes are also originated by another network.

At a glance

IPv4 prefixes

2,372

IPv6 prefixes

2,378

IPv4 addresses

13.4M

IPv6 /64s

505B

Upstream graph

The networks AS20115 is seen behind, one and two hops out, drawn from real AS paths.

AS20115Toward the internet core
Upstream graph for AS20115: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20115Spectrum (Charter)This networkAS1299Arelion (fka. Tel…AS3257GTT Communication…AS6461Zayo BandwidthAS6939Hurricane Electri…AS7843Spectrum (Charter)AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS6667Elisa OyjAS398465Rackdog LLCAS32590Valve CorporationAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS20115 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

381

adjacent networks

Upstreams
277%
Peers
21957%
Downstreams
13535%

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

Upstreams of AS20115
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer78,250117
AS7843Spectrum (Charter)USPeer41,544129
AS1299Arelion (fka. Telia Carrier)SEPeer36,253104
AS3257GTT Communications Inc.USPeer36,075136
AS6461Zayo BandwidthUSPeer21,82020
AS6830Liberty Global Europe Holding B.V.EUPeer12,5446
AS3356Lumen (Level 3)USPeer10,69435
AS3491PCCW Global (HK) Ltd.HKPeer7,09919
AS7713PT Telkom Indonesia TbkIDPeer6,3693
AS4637Telstra International LimitedHKPeer5,4046

Prefixes

All 4,750

The largest blocks AS20115 originates, widest first.

Largest prefixes originated by AS20115
PrefixAddressesVisibility
47.132.0.0/15131k76/76
23.84.0.0/1665.5k76/76
23.87.0.0/1665.5k76/76
24.217.0.0/1665.5k76/76
47.12.0.0/1665.5k76/76
47.14.0.0/1665.5k76/76
47.135.0.0/1665.5k76/76
47.226.0.0/1665.5k76/76
47.229.0.0/1665.5k76/76
66.52.0.0/1665.5k76/76

Routing health

How AS20115'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

  • Valid98.4%4,672
  • Invalid0.3%14
  • No ROA1.3%64

Propagation

  • Globally propagated90% of full-feed peers or more53.0%2,519
  • Partially propagated40% to 90%<0.1%3
  • Seen by few peersUnder 40%46.9%2,228

Prefix sizes

IPv4 — 2,372 prefixes

IPv6 — 2,378 prefixes

  • /2868.7B × /64<0.1%1
  • /3017.2B × /64<0.1%1
  • /318.6B × /640.1%3
  • /324.3B × /643.8%90
  • /332.1B × /64<0.1%1
  • /36268M × /640.6%14
  • /4016.8M × /640.8%19
  • /441M × /641.3%31
  • /4865.5k × /6493.3%2,218

Recent changes

Announcements that started or stopped since 12th Oct 2026.

138 announced and 61 withdrawn in all; the most recent are shown.

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