subnet.im

AS36103Central Utah Telephone, Inc.

United StatesRegistryARIN

As of 27th September 2026, AS36103 (Central Utah Telephone, Inc.), a network registered in the United States with ARIN, originates 126 IPv4 prefixes covering 93.4k addresses and 19 IPv6 prefixes. By IPv4 address space that makes it the 2,504th-largest of the 79,525 networks we see originating IPv4, and the 801st-largest of 18,428 in the United States. It is seen behind 4 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS1299 (Arelion (fka. Telia Carrier)), and in front of 26 downstream networks. 86% 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

126

IPv6 prefixes

19

IPv4 addresses

93.4k

IPv6 /64s

8.6B

Upstream graph

The networks AS36103 is seen behind, one and two hops out, drawn from real AS paths.

AS36103Toward the internet core
Upstream graph for AS36103: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS36103Central Utah Tele…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS3257GTT Communication…AS6939Hurricane Electri…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS6667Elisa OyjAS398465Rackdog LLCAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS36103 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

62

adjacent networks

Upstreams
46%
Peers
3252%
Downstreams
2642%

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

Upstreams of AS36103
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer11,262117
AS1299Arelion (fka. Telia Carrier)SEPeer2,39564
AS3257GTT Communications Inc.USPeer1,15789
AS174Cogent Communications, LLCUSPeer68619

Prefixes

All 145

The largest blocks AS36103 originates, widest first.

Largest prefixes originated by AS36103
PrefixAddressesVisibility
148.85.0.0/1816.4k81/81
23.88.160.0/204.1k81/81
64.72.208.0/204.1k81/81
64.77.240.0/204.1k81/81
67.207.32.0/204.1k81/81
69.163.64.0/204.1k81/81
202.69.144.0/204.1k81/81
204.225.16.0/204.1k81/81
205.197.208.0/204.1k81/81
74.50.216.0/212k81/81

Routing health

How AS36103'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

  • Valid85.5%124
  • Invalid0.0%0
  • No ROA14.5%21

Propagation

  • Globally propagated90% of full-feed peers or more100.0%145
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 126 prefixes

IPv6 — 19 prefixes

  • /324.3B × /6410.5%2
  • /47131k × /645.3%1
  • /4865.5k × /6484.2%16

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.