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AS18671PRTC

United StatesRegistryARINTypeEyeball

As of 27th September 2026, AS18671 (PRTC), an access network registered in the United States with ARIN, originates 35 IPv4 prefixes covering 14.8k addresses. By IPv4 address space that makes it the 8,513th-largest of the 79,523 networks we see originating IPv4, and the 2,704th-largest of 18,427 in the United States. It is seen behind 3 upstream networks, most often AS26744 (Planters Communications, LLC) and AS2711 (Spirit Communications), and in front of 3 downstream networks. 57% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

35

IPv6 prefixes

0

IPv4 addresses

14.8k

IPv6 /64s

0

Upstream graph

The networks AS18671 is seen behind, one and two hops out, drawn from real AS paths.

AS18671Toward the internet core
Upstream graph for AS18671: 7 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18671PRTCThis networkAS2711Spirit Communicat…AS16863Home Telephone Co…AS26744Planters Communic…AS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS174Cogent Communicat…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS18671 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

12

adjacent networks

Upstreams
325%
Peers
650%
Downstreams
325%

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

Upstreams of AS18671
NetworkCountryRelationshipPathsVantage pts
AS26744Planters Communications, LLCUSPeer1,30981
AS2711Spirit CommunicationsUSPeer1,19681
AS16863Home Telephone Company, Inc.USPeer1,15881

Prefixes

All 35

The largest blocks AS18671 originates, widest first.

Largest prefixes originated by AS18671
PrefixAddressesVisibility
66.180.224.0/204.1k81/81
204.116.240.0/221k81/81
165.166.174.0/2351281/81
206.74.48.0/2351281/81
207.144.20.0/2351281/81
207.144.50.0/2351281/81
207.144.216.0/2351281/81
64.53.59.0/2425681/81
66.180.225.0/2425681/81
66.180.227.0/2425681/81

Routing health

How AS18671'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

  • Valid57.1%20
  • Invalid0.0%0
  • No ROA42.9%15

Propagation

  • Globally propagated90% of full-feed peers or more100.0%35
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 35 prefixes

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS18671 started or stopped in this period.

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