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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS400185US | NMMC-ASN-1 - North Mississippi Medical Center Inc. | 256 | — | 1 |
| AS397452US | ANDOVER-1 - Town of Andover MA | 256 | — | 1 |
| AS398241US | CELLNETIX - CELLNETIX LABS LLC | 256 | — | 1 |
| AS46299US | LITTLETON-AS - City of Littleton | 256 | — | 1 |
| AS396127US | SUCCESS-ACADEMIES - Success Academy Charter Schools Inc. | 256 | — | 1 |
| AS399283US | ROBLY-MARKETING-LLC - Robly Digital Marketing LLC | 256 | — | 1 |
| AS53900US | ORBIMED - OrbiMed Advisors, LLC | 256 | — | 1 |
| AS394123US | ASBURYINTEGRATEDTECHNOLOGIES - The Asbury Group Integrated Technologies, LLC | 256 | — | 1 |
| AS21629US | TWR - TWR Tech, LLC | 256 | 3 | 4 |
| AS32124US | CONTINENTALMILLS-EXT - CONTINENTAL MILLS | 256 | — | 1 |
| AS396094US | PERPETUAL-STORAGE-INC - Perpetual Storage, Inc. | 256 | — | 1 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS30087US | APCO - Automobile Protection Corporation | 256 | — | 1 |
| AS400652US | KRV-GSH-01 - Keystone RV Company | 256 | — | 1 |
| AS402573US | GAIA-01 - GAIA | 256 | — | 1 |
| AS401438US | NETFABRIC-01 - NetFabric, LLC | 256 | — | 1 |
| AS54382US | SICO-ATL - Starr International USA, Inc. | 256 | — | 1 |
| AS394960US | WORKSIGHTED - Worksighted Inc | 256 | — | 1 |
| AS399432US | AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS29971US | ICUC001 - iControl Systems USA LLC | 256 | — | 1 |
| AS21635US | WWCUSA - World Wide Communications USA Inc. | 256 | — | 1 |
| AS33675US | SURESCRIPTS - Surescripts, LLC | 256 | — | 1 |
| AS401099US | HTC-IS-01 - Horry Telephone Cooperative, Inc. | 256 | — | 1 |
| AS547US | ASN-IBM-LEX - IBM | 256 | — | 1 |
| AS32761US | WASSE-NYC - Wasserstein & Co. | 256 | — | 1 |
| AS20274US | FVCC-AS - Flathead Valley Community College | 256 | — | 1 |
| AS33553US | SOUNDTRANSIT - SOUND TRANSIT | 256 | — | 1 |
| AS402385US | SPICER-NETWORKS - Spicer | 256 | 256 | 2 |
| AS7761US | AS-350E - Morningstar, Inc. | 256 | — | 1 |
| AS398187US | NWTS-FERNDALE-01 - NW Technology | 256 | — | 1 |
| AS210398US | Brander-Group-ASN Brander Group Inc. | 256 | — | 1 |
| AS21644US | DISTINGUISHED-SERVICES - Distinguished Services | 256 | — | 1 |
| AS399762US | BUCKEYE-CITYNET-01 - City of Buckeye | 256 | — | 1 |
| AS27137US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS4182US | MLSLI-2 - MLSListings inc. | 256 | — | 1 |
| AS62808US | MCGRATH-NORTH - McGrath North | 256 | — | 1 |
| AS394704US | GC-CA4 - GOR CORPORATION | 256 | — | 1 |
| AS401236US | SBI - South Bay Internet | 256 | — | 1 |
| AS54879US | PUD-001 - Public Utility District No1 of Cowlitz County | 256 | — | 1 |
| AS399920US | DAYNET-01 - Dayton | 256 | 4.1K | 2 |
| AS22665US | UNGAGE - Ungage Capital LLC | 256 | 20 | 6 |
| AS63013US | EHRTECH-N1 - EHR Technology Group, L.L.C. | 256 | — | 1 |
| AS398449US | MSDELTA - Mississippi Delta Community College | 256 | — | 1 |
| AS11253US | AAAWIRELESSIT - AAAWIRELESSIT | 256 | 65.5K | 2 |
| AS62876US | 8X8-AS-CORP - 8x8, Inc. | 256 | — | 1 |
| AS394942US | COF-CA-AS - City of Fontana | 256 | — | 1 |