asn.dev

Observed topology

AS16637 MTN SA - MTN SA

Mobile AFRINIC NSP

Upstreams 28 carry this network
Downstreams 50 this network carries
Adjacent (IPv4) 93
Adjacent (IPv6) 33
Upstream graph Who carries AS16637, and who carries them, drawn as a map up to the transit-free core. 12 exchanges Where AS16637 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 28

Networks observed carrying traffic for AS16637: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv63,951
AS1299Arelion Sweden ABTransitIPv43,723
AS3356Level 3 Parent, LLCTransitIPv4 IPv62,750
AS174Cogent Communications, LLCTransitIPv4 IPv6840
AS34549meerfarbig GmbH & Co. KGHostingIPv4286
AS24482SG.GSHostingIPv4 IPv6211
AS37100SEACOM LimitedUnclassifiedIPv4207
AS3741Dimension DataUnclassifiedIPv4200
AS37721Virtual Technologies & SolutionsResidentialIPv4118
AS48185team.blue NVUnclassifiedIPv4 IPv6118

All 28 upstreams →

Transit

Downstream networks

All 50

Networks for which AS16637 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS29465MTN NIGERIA Communication limitedMobileIPv4 IPv629,843
AS30986Scancom LimitedResidentialIPv4 IPv618,122
AS12091MTN SAUnclassifiedIPv48,237
AS30992MTN Network Solutions (Cameroon)UnclassifiedIPv4 IPv67,013
AS36974MTN COTE D'IVOIRE S.AUnclassifiedIPv4 IPv66,079
AS36972MTN SUDANUnclassifiedIPv44,947
AS20294MTN UgandaUnclassifiedIPv4 IPv64,513
AS9129MTN SAUnclassifiedIPv4 IPv64,037
AS14593Space Exploration Technologies CorporationResidentialIPv4 IPv63,614
AS36890MTN RwandacellUnclassifiedIPv4 IPv63,120

All 50 downstreams →

Adjacency

Adjacent networks

All 97

Every AS seen directly next to AS16637 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv670,253
AS29465MTN NIGERIA Communication limitedMobileIPv4 IPv638,375
AS1299Arelion Sweden ABTransitIPv4 IPv618,732
AS30986Scancom LimitedResidentialIPv4 IPv618,699
AS3356Level 3 Parent, LLCTransitIPv4 IPv617,291
AS20294MTN UgandaUnclassifiedIPv4 IPv612,526
AS174Cogent Communications, LLCTransitIPv4 IPv610,098
AS9129MTN SAUnclassifiedIPv4 IPv69,529
AS12091MTN SAUnclassifiedIPv48,237
AS30992MTN Network Solutions (Cameroon)UnclassifiedIPv4 IPv67,238

All 97 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.