subnet.im

AS14041University Corporation for Atmospheric Research

United StatesRegistryARIN

As of 22nd October 2026, AS14041 (University Corporation for Atmospheric…), a network registered in the United States with ARIN, originates 10 IPv4 prefixes covering 199k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,341st-largest of the 79,655 networks we see originating IPv4, and the 375th-largest of 18,475 in the United States. It is seen behind 8 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS3356 (Lumen (Level 3)), and in front of 25 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 55% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

10

IPv6 prefixes

1

IPv4 addresses

199k

IPv6 /64s

65.5k

Upstream graph

The networks AS14041 is seen behind, one and two hops out, drawn from real AS paths.

AS14041Toward the internet core
Upstream graph for AS14041: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS14041University Corpor…This networkAS293ESnetAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS6939Hurricane Electri…AS11164Internet2 I2PXAS2914NTT America, Inc.AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS3549Lumen (fka. Globa…AS20130Depaul UniversityAS132337AxclusiveAS2152CENIC - CalREN

Networks observed one and two hops upstream of AS14041 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

180

adjacent networks

Upstreams
84%
Peers
14782%
Downstreams
2514%

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

Upstreams of AS14041
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer5,40071
AS3356Lumen (Level 3)USPeer1,73055
AS11164Internet2 I2PXUSPeer8839
AS6939Hurricane Electric LLCUSPeer88322
AS293ESnetUSPeer1141
AS14537Continent 8 LLCUSPeer324
AS11537Internet2USPeer21
AS2152CENIC - CalRENUSPeer11

Prefixes

The largest blocks AS14041 originates, widest first.

Largest prefixes originated by AS14041
PrefixAddressesVisibility
129.19.0.0/1665.5k77/77
130.253.0.0/1665.5k77/77
161.98.0.0/1665.5k77/77
129.19.92.0/235121/77
129.19.148.0/235121/77
129.19.149.0/242561/77
129.19.153.0/242561/77
129.19.165.0/242561/77
192.43.217.0/2425677/77
198.59.2.0/2425677/77

Routing health

How AS14041'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%11
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more54.5%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%45.5%5

Prefix sizes

IPv4 — 10 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 22nd Sept 2026.

  • Announced129.19.153.0/2427th Sept 2026
  • Withdrawn129.19.153.0/2426th Sept 2026

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