subnet.im

AS25653FortressITX

United StatesRegistryARINTypeEyeball

As of 11th November 2026, AS25653 (FortressITX), an access network registered in the United States with ARIN, originates 92 IPv4 prefixes covering 172k addresses. By IPv4 address space that makes it the 1,529th-largest of the 80,743 networks we see originating IPv4, and the 439th-largest of 18,754 in the United States. It is seen behind 3 upstream networks, most often AS3257 (GTT Communications Inc.) and AS174 (Cogent Communications, LLC). 93% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

92

IPv6 prefixes

0

IPv4 addresses

172k

IPv6 /64s

0

Upstream graph

The networks AS25653 is seen behind, one and two hops out, drawn from real AS paths.

AS25653Toward the internet core
Upstream graph for AS25653: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS25653FortressITXThis networkAS174Cogent Communicat…AS3257GTT Communication…AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS6667Elisa OyjAS398465Rackdog LLCAS20130Depaul UniversityAS132337Axclusive

Networks observed one and two hops upstream of AS25653 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

8

adjacent networks

Upstreams
338%
Peers
563%
Downstreams
00%

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

Upstreams of AS25653
NetworkCountryRelationshipPathsVantage pts
AS3257GTT Communications Inc.USPeer3,30376
AS174Cogent Communications, LLCUSPeer2,72438
AS6939Hurricane Electric LLCUSPeer5046

Prefixes

All 92

The largest blocks AS25653 originates, widest first.

Largest prefixes originated by AS25653
PrefixAddressesVisibility
65.98.0.0/1732.8k75/76
69.72.128.0/1732.8k1/76
208.116.0.0/1816.4k1/76
69.72.160.0/198.2k75/76
69.72.192.0/198.2k75/76
69.72.224.0/204.1k75/76
208.116.32.0/204.1k75/76
216.67.240.0/204.1k75/76
65.98.40.0/212k75/76
65.98.56.0/212k75/76

Routing health

How AS25653'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

  • Valid93.5%86
  • Invalid0.0%0
  • No ROA6.5%6

Propagation

  • Globally propagated90% of full-feed peers or more94.6%87
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%5.4%5

Prefix sizes

IPv4 — 92 prefixes

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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