subnet.im

AS3549Lumen (fka. Global Crossing)

United StatesRegistryARINTypeCarrier

As of 13th October 2026, AS3549 (Lumen (fka. Global Crossing)), a transit carrier registered in the United States with ARIN, originates 1,519 IPv4 prefixes covering 5.9M addresses and 27 IPv6 prefixes. By IPv4 address space that makes it the 119th-largest of the 79,585 networks we see originating IPv4, and the 36th-largest of 18,443 in the United States. It is seen behind 4 upstream networks, most often AS3356 (Lumen (Level 3)) and AS4775 (Globe Telecoms), and in front of 290 downstream networks. Under 1% of its announcements have a valid RPKI ROA; 120 are RPKI-invalid. 41% of its routes reach at least 90% of full-feed peers, and 725 prefixes are also originated by another network.

At a glance

IPv4 prefixes

1,519

IPv6 prefixes

27

IPv4 addresses

5.9M

IPv6 /64s

65.5B

Upstream graph

The networks AS3549 is seen behind, one and two hops out, drawn from real AS paths.

AS3549Toward the internet core
Upstream graph for AS3549: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3549Lumen (fka. Globa…This networkAS3356Lumen (Level 3)AS4775Globe TelecomsAS7195EdgeUnoAS22284U.S. Department o…AS2914NTT America, Inc.AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS32590Valve CorporationAS8047GENERAL COMMUNICA…

Networks observed one and two hops upstream of AS3549 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

604

adjacent networks

Upstreams
41%
Peers
31051%
Downstreams
29048%

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

Upstreams of AS3549
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer99,020145
AS4775Globe TelecomsPHPeer12,2901
AS22284U.S. Department of the InteriorUSPeer2,74879
AS7195EdgeUnoCOPeer1,1632

Prefixes

All 1,546

The largest blocks AS3549 originates, widest first.

Largest prefixes originated by AS3549
PrefixAddressesVisibility
35.248.0.0/14262k81/81
64.212.0.0/14262k81/81
66.192.0.0/14262k81/81
50.58.0.0/15131k81/81
64.128.0.0/15131k81/81
64.212.0.0/15131k81/81
67.16.0.0/15131k81/81
67.74.0.0/15131k81/81
74.202.0.0/15131k81/81
173.226.0.0/15131k81/81

Routing health

How AS3549'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

  • Valid0.3%5
  • Invalid7.8%120
  • No ROA91.9%1,421

Propagation

  • Globally propagated90% of full-feed peers or more40.8%630
  • Partially propagated40% to 90%0.6%10
  • Seen by few peersUnder 40%58.6%906

Prefix sizes

IPv4 — 1,519 prefixes

IPv6 — 27 prefixes

  • /2934.4B × /643.7%1
  • /318.6B × /647.4%2
  • /324.3B × /6411.1%3
  • /341.1B × /643.7%1
  • /441M × /643.7%1
  • /4865.5k × /6470.4%19

Recent changes

Announcements that started or stopped since 13th Sept 2026.

757 announced and 39 withdrawn in all; the most recent are shown.

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