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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 2.8K |
| 65.5K |
| 12 |
| AS16912US | 4-LESS-NETWORK - 4 Less Communications, Inc. | 2.8K | — | 5 |
| AS7775US | IRONTRUST-NETWORKS - Irontrust Networks | 2.8K | 65.5K | 8 |
| AS12169US | AS12169 - Kyndryl | 2.8K | — | 11 |
| AS16900US | SEDGWICK-CMS - Sedgwick Claims Management Services, Inc. | 2.8K | — | 4 |
| AS395447US | HONORHEALTH - HonorHealth | 2.8K | — | 11 |
| AS399282US | CONNEXT-BROADBAND - Connext LLC | 2.8K | 65.5K | 12 |
| AS400759US | AMERICAN-CLOUD-01 - American Cloud LLC | 2.8K | 65.5K | 11 |
| AS12122US | STJHS - St. Joseph Health System | 2.8K | — | 9 |
| AS10660US | SYSNET-AS - SYSNET Communications | 2.8K | — | 11 |
| AS397880US | SKYWIRE-ASN - Mitec Solutions | 2.8K | 65.5K | 7 |
| AS1311US | BARRA-NET-AS - Barra International, LLC | 2.8K | — | 10 |
| AS54054US | DETEQUE - Deteque | 2.8K | 65.5K | 7 |
| AS22149US | AMS-ROS-CA - HEWLETT PACKARD ENTERPRISE COMPANY | 2.8K | 1 | 6 |
| AS393521US | SCOTT-DATA - Scott Technology Center | 2.8K | — | 4 |
| AS19803US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 2.8K | — | 11 |
| AS62834US | PALIG - Pan-American Life Insurance Group, Inc. | 2.8K | — | 3 |
| AS1585US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 2.8K | — | 4 |
| AS30197US | BEST-WESTERN-INTERNATIONAL-INC - Best Western International, Inc. | 2.8K | — | 5 |
| AS11690US | COGNIZANT-US - Cognizant | 2.8K | — | 5 |
| AS62819US | PACIFIC-WAVE-01 - Cetra Group Inc. | 2.8K | — | 3 |
| AS35860US | IMAGINE-NETWORKS-IMGNET - Imagine Networks | 2.8K | — | 9 |
| AS40630US | GRIDFURY-AS - GridFury, LLC | 2.8K | 73.7K | 8 |
| AS397285US | CAMBRIDGETELEPHONECO - Cambridge Telephone | 2.8K | — | 5 |
| AS55001US | CYBERSTREET-NET - CyberStreet | 2.8K | — | 8 |
| AS34985US | NETINNOVATIONLLC-AS-AP - Net Innovation LLC | 2.8K | — | 11 |
| AS46817US | MTAINC - Midwest Telecom of America, Inc | 2.8K | — | 11 |
| AS27399US | BAM-US - Balyasny Asset Management L.P. | 2.8K | — | 11 |
| AS10690US | NETSCOUT - NETSCOUT SYSTEMS INC. | 2.8K | 1 | 12 |
| AS14043US | SCANSOURCE - ScanSource, Inc. | 2.8K | — | 7 |
| AS14882US | QUAD-GRAPHICS - Quad/Graphics Inc. | 2.8K | — | 7 |
| AS397982US | GRAND-MOUND-COMMUNICATIONS - GRAND MOUND COOPERATIVE TELEPHONE ASSOCIATION | 2.8K | — | 7 |
| AS214456US | SERVERSP-AS ServerSP LLC | 2.8K | 6 | 17 |
| AS53831US | SQUARESPACE - Squarespace, Inc. | 2.8K | — | 11 |
| AS400471US | WEC-ASN - WHEATLAND ELECTRIC COOPERATIVE, INC | 2.8K | — | 7 |
| AS13897US | CDC1 - Internet Brands Inc. | 2.8K | — | 3 |
| AS53641US | TOMALESBAYLAN - Tomales Bay LAN, LLC | 2.8K | — | 7 |
| AS17014US | NAN - North Atlantic Networks, LLC | 2.8K | — | 11 |
| AS63427US | HASERVICES - Computer Design & Integration LLC | 2.8K | — | 10 |
| AS53724US | EVM - EXTRAVM LLC | 2.8K | 7 | 18 |
| AS63466US | AS-COMMU-166 - Communication Construction Services Inc. | 2.8K | — | 4 |
| AS21700US | NEPTUNE-NETWORKS - Neptune Networks, LLC | 2.8K | 67.6K | 9 |
| AS11164US | INTERNET2-I2PX - Internet2 | 2.8K | 8 | 14 |
| AS399381US | REZI-NET-AS - Resideo Technologies, Inc | 2.8K | — | 4 |
| AS40073US | NBA-ASN-USA - NBA Properties, Inc. | 2.8K | — | 9 |
| AS30335US | AS-WWU - Walla Walla University | 2.8K | — | 3 |
| AS19903US | REACHBROADBAND - Reach Broadband LLC | 2.8K | — | 11 |