subnet.im

AS37100SEACOM Limited

MauritiusRegistryAFRINICTypeCarrier

As of 10th November 2026, AS37100 (SEACOM Limited), a transit carrier registered in Mauritius with AFRINIC, originates 11 IPv4 prefixes covering 1.1M addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 446th-largest of the 80,723 networks we see originating IPv4, and the 2nd-largest of 30 in Mauritius. It is seen behind 70 upstream networks, most often AS2914 (NTT America, Inc.) and AS6453 (TATA Communications (America) Inc), and in front of 1,898 downstream networks. 21% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 93% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

11

IPv6 prefixes

3

IPv4 addresses

1.1M

IPv6 /64s

12.9B

Upstream graph

The networks AS37100 is seen behind, one and two hops out, drawn from real AS paths.

AS37100Toward the internet core
Upstream graph for AS37100: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37100SEACOM LimitedThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS6453TATA Communicatio…AS6667Elisa OyjAS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3549Lumen (fka. Globa…AS8220COLTAS35280F5 Networks SARL

Networks observed one and two hops upstream of AS37100 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

4,081

adjacent networks

Upstreams
702%
Peers
2,11352%
Downstreams
1,89847%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 70.

Upstreams of AS37100
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer22,08680
AS6453TATA Communications (America) IncUSPeer17,79943
AS1299Arelion (fka. Telia Carrier)SEPeer16,92579
AS3356Lumen (Level 3)USPeer11,75674
AS6667Elisa OyjFIPeer8,0384
AS2497Internet Initiative Japan Inc.JPPeer7,9386
AS32590Valve CorporationUSPeer6,1253
AS9002RETN LimitedGBPeer5,8938
AS3257GTT Communications Inc.USPeer5,86888
AS14537Continent 8 LLCUSPeer5,3674

Prefixes

The largest blocks AS37100 originates, widest first.

Largest prefixes originated by AS37100
PrefixAddressesVisibility
105.16.0.0/121M75/76
41.87.96.0/198.2k76/76
41.206.96.0/198.2k76/76
105.29.96.0/204.1k1/76
154.72.240.0/204.1k76/76
41.207.232.0/221k76/76
41.217.212.0/221k76/76
102.221.24.0/221k76/76
196.6.170.0/2425676/76
196.6.171.0/2425676/76

Routing health

How AS37100'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

  • Valid21.4%3
  • Invalid0.0%0
  • No ROA78.6%11

Propagation

  • Globally propagated90% of full-feed peers or more92.9%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%7.1%1

Prefix sizes

IPv4 — 11 prefixes

IPv6 — 3 prefixes

  • /324.3B × /64100.0%3

Recent changes

Announcements that started or stopped since 11th Oct 2026.

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