subnet.im

AS401026Iron Mountain Data Center

United StatesRegistryARIN

As of 11th November 2026, AS401026 (Iron Mountain Data Center), a network registered in the United States with ARIN, originates 4 IPv4 prefixes covering 1k addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 36,497th-largest of the 80,747 networks we see originating IPv4, and the 8,244th-largest of 18,752 in the United States. It is seen behind 4 upstream networks, most often AS8220 (COLT) and AS1299 (Arelion (fka. Telia Carrier)). 50% 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

4

IPv6 prefixes

2

IPv4 addresses

1k

IPv6 /64s

16.8M

Upstream graph

The networks AS401026 is seen behind, one and two hops out, drawn from real AS paths.

AS401026Toward the internet core
Upstream graph for AS401026: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS401026Iron Mountain Dat…This networkAS1299Arelion (fka. Tel…AS8220COLTAS12956Telxius (Telefoni…AS401025Excel Orthopaedic…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS3356Lumen (Level 3)AS32590Valve CorporationAS7015Comcast Cable Com…AS46887Zayo (fka. Crown …

Networks observed one and two hops upstream of AS401026 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
450%
Peers
450%
Downstreams
00%

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

Upstreams of AS401026
NetworkCountryRelationshipPathsVantage pts
AS8220COLTGBPeer20782
AS1299Arelion (fka. Telia Carrier)SEPeer10441
AS401025Excel Orthopaedic SpecialistsUSPeer7676
AS12956Telxius (Telefonica Global)ESPeer4116

Prefixes

The largest blocks AS401026 originates, widest first.

Largest prefixes originated by AS401026
PrefixAddressesVisibility
148.51.219.0/2425676/76
148.51.238.0/2425676/76
148.51.241.0/2425676/76
209.160.234.0/2425676/76
2605:3380:4e00::/4016.8M × /6462/63
2605:3380:ff0f::/4865.5k × /6462/63

Routing health

How AS401026'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

  • Valid50.0%3
  • Invalid0.0%0
  • No ROA50.0%3

Propagation

  • Globally propagated90% of full-feed peers or more100.0%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 4 prefixes

IPv6 — 2 prefixes

  • /4016.8M × /6450.0%1
  • /4865.5k × /6450.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS401026 started or stopped in this period.

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