asn.dev

Observed topology

AS40948 STRATUS-NETWORKS

Upstreams 9 carry this network
Downstreams 30 this network carries
Adjacent (IPv4) 38
Adjacent (IPv6) 9

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS40948: 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 IPv6580
AS174Cogent Communications, LLCTransitIPv4 IPv6195
AS1299Arelion Sweden ABTransitIPv4 IPv6142
AS1828Unitas GlobalUnclassifiedIPv481
AS6461Zayo BandwidthTransitIPv4 IPv640
AS14907Wikimedia Foundation Inc.HostingIPv413
AS24482SG.GSHostingIPv413
AS852TELUS Communications Inc.ResidentialIPv41
AS293ESnetUnclassifiedIPv41

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.

Transit

Downstream networks

inferred

Networks for which AS40948 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS55037Busey BankUnclassifiedIPv41,005
AS12166Other World Computing - OWCUnclassifiedIPv4469
AS22379Manifold Services IncUnclassifiedIPv4 IPv6266
AS22181IV NET, LLPUnclassifiedIPv4256
AS397936DC COMPUTERSUnclassifiedIPv4 IPv6217
AS30200DerbyTech Computer WorksUnclassifiedIPv4201
AS26307Horace Mann Service CorporationUnclassifiedIPv4192
AS20127Kleinschmidt Inc.UnclassifiedIPv4 IPv6135
AS17167Microchip Computer Solutions, Inc.UnclassifiedIPv4130
AS32715ILLINOIS CENTRAL COLLEGEUnclassifiedIPv4120
AS4002956R-NETUnclassifiedIPv4 IPv6100
AS14167-Reserved AS-UnclassifiedIPv467
AS33155ADVANCED TECHNOLOGY SERVICES, INC.UnclassifiedIPv467
AS394113INCCRRAUnclassifiedIPv467
AS46480Pekin InsuranceUnclassifiedIPv467
AS54765Management Investment CorporationUnclassifiedIPv467
AS23370TY INCUnclassifiedIPv467
AS54878Backlund Investment Co.UnclassifiedIPv467
AS395007Rocket Communications Corp.UnclassifiedIPv466
AS395269Wahl ClipperUnclassifiedIPv465
AS13612SysmexUnclassifiedIPv465
AS399484Rockford UniversityUnclassifiedIPv465
AS401822City of RockfordUnclassifiedIPv465
AS33477Knox CollegeUnclassifiedIPv463
AS396885Heart Technologies, Inc.UnclassifiedIPv459
AS40771Illinois Mutual Life Insurance CompanyUnclassifiedIPv457
AS396396Pearl and Associates, LTDUnclassifiedIPv456
AS394257Springfield Clinic, LLPUnclassifiedIPv454
AS53777Francis W. Parker SchoolUnclassifiedIPv449
AS46857SSL Wireless, LLCUnclassifiedIPv637

Adjacency

Adjacent networks

47 shown

Every AS seen directly next to AS40948 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv63,179
AS55037Busey BankUnclassifiedIPv41,005
AS1299Arelion Sweden ABTransitIPv4 IPv6698
AS1828Unitas GlobalUnclassifiedIPv4667
AS174Cogent Communications, LLCTransitIPv4 IPv6520
AS12166Other World Computing - OWCUnclassifiedIPv4469
AS22379Manifold Services IncUnclassifiedIPv4 IPv6266
AS22181IV NET, LLPUnclassifiedIPv4256
AS6461Zayo BandwidthTransitIPv4 IPv6229
AS397936DC COMPUTERSUnclassifiedIPv4 IPv6217
AS30200DerbyTech Computer WorksUnclassifiedIPv4201
AS26307Horace Mann Service CorporationUnclassifiedIPv4192
AS20127Kleinschmidt Inc.UnclassifiedIPv4 IPv6135
AS17167Microchip Computer Solutions, Inc.UnclassifiedIPv4130
AS32715ILLINOIS CENTRAL COLLEGEUnclassifiedIPv4120
AS4002956R-NETUnclassifiedIPv4 IPv6100
AS23370TY INCUnclassifiedIPv467
AS394113INCCRRAUnclassifiedIPv467
AS54878Backlund Investment Co.UnclassifiedIPv467
AS14167-Reserved AS-UnclassifiedIPv467
AS46480Pekin InsuranceUnclassifiedIPv467
AS54765Management Investment CorporationUnclassifiedIPv467
AS33155ADVANCED TECHNOLOGY SERVICES, INC.UnclassifiedIPv467
AS395007Rocket Communications Corp.UnclassifiedIPv466
AS401822City of RockfordUnclassifiedIPv465
AS13612SysmexUnclassifiedIPv465
AS399484Rockford UniversityUnclassifiedIPv465
AS395269Wahl ClipperUnclassifiedIPv465
AS33477Knox CollegeUnclassifiedIPv463
AS396885Heart Technologies, Inc.UnclassifiedIPv459
AS40771Illinois Mutual Life Insurance CompanyUnclassifiedIPv457
AS396396Pearl and Associates, LTDUnclassifiedIPv456
AS394257Springfield Clinic, LLPUnclassifiedIPv454
AS53777Francis W. Parker SchoolUnclassifiedIPv449
AS46857SSL Wireless, LLCUnclassifiedIPv637
AS24482SG.GSHostingIPv416
AS14907Wikimedia Foundation Inc.HostingIPv414
AS293ESnetUnclassifiedIPv42
AS852TELUS Communications Inc.ResidentialIPv42

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.

Interconnection

Exchange presence

recorded

Internet exchanges where Packet Clearing House has a port recorded for AS40948, largest fabric first. An exchange is shared switching where networks interconnect directly rather than paying a transit provider to carry traffic between them, so turning up at one is a deliberate choice about how this network wants to be reached. Each name opens that exchange's own page, with its peering LANs and every other network recorded on it. Recorded at 3 exchanges across 1 country and 1 region.

ExchangeLocationTheir addressMember ports
Equinix Internet Exchange ChicagoChicago, United States208.115.136.94280
MidWest-IX - St. LouisSt. Louis, United States206.71.10.1918
FD-IX - St. LouisSt. Louis, United States206.71.10.1915

Unlike the tables above, this is recorded rather than inferred. An address on a peering LAN is at that exchange by definition. Two carve-outs all the same. Member ports counts every participant at the exchange, not this network's ports, so read it as a size proxy. And an absent exchange means PCH has no record of it, not that the network is not there.

Provenance

Where this comes from

Derived from routing tables collected at 2026-08-08 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.02M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

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

Exchange presence comes from a separate dataset: the directory collected 2026-08-09 by Packet Clearing House (https://www.pch.net/ixp/data), covering 1,327 exchanges and 93,164 recorded member ports, licensed CC BY-NC-SA 3.0.

PeeringDB is the better-known directory and is deliberately not the source here: its acceptable-use policy forbids the bulk storage this needs. The two answer different questions anyway. PeeringDB reports what an operator declares about itself; this reports what PCH has recorded.