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AS20172Verisign Anycast US 0E

United StatesRegistryARIN

As of 14th November 2026, AS20172 (Verisign Anycast US 0E), a network registered in the United States with ARIN, originates 16 IPv4 prefixes covering 4.1k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 17,406th-largest of the 80,844 networks we see originating IPv4, and the 4,874th-largest of 18,774 in the United States. It is seen behind 1 upstream network, most often AS7342 (VeriSign Infrastructure & Operations). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers, and 33 prefixes are also originated by another network.

At a glance

IPv4 prefixes

16

IPv6 prefixes

17

IPv4 addresses

4.1k

IPv6 /64s

1.1M

Upstream graph

The networks AS20172 is seen behind, one and two hops out, drawn from real AS paths.

AS20172Toward the internet core
Upstream graph for AS20172: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS20172Verisign Anycast …This networkAS7342VeriSign Infrastr…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.

Networks observed one and two hops upstream of AS20172 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS20172
NetworkCountryRelationshipPathsVantage pts
AS7342VeriSign Infrastructure & OperationsUSPeer18628

Prefixes

All 33

The largest blocks AS20172 originates, widest first.

Largest prefixes originated by AS20172
PrefixAddressesVisibility
81.19.194.0/242566/78
192.30.45.0/242561/78
192.41.162.0/2425611/78
192.42.175.0/2425611/78
192.42.176.0/242561/78
192.48.79.0/2425611/78
192.52.178.0/2425611/78
192.55.83.0/2425611/78
192.68.126.0/2425611/78
192.81.185.0/242566/78

Routing health

How AS20172'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

  • Valid100.0%33
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%33

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 17 prefixes

  • /4865.5k × /64100.0%17

Recent changes

Announcements that started or stopped since 15th Oct 2026.

35 announced and 2 withdrawn in all; the most recent are shown.

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