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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) | 227.7M | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 20,988 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,222 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,578 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,934 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.3M | 4,544 |
| 22K |
| — |
| 54 |
| AS14669US | RGTS-NY - Convergeone Unified Technology Solutions, Inc. | 22K | — | 8 |
| AS21557US | CYB-BLK-1 - Cybernet Communications, Inc. | 21.8K | 66.3K | 39 |
| AS397048US | NU-107-ASN - Newport Utilities | 21.8K | — | 13 |
| AS26342US | DTTS-ASN - Deloitte Touche Tohmatsu Services, Inc. | 21.8K | 4.2K | 23 |
| AS29770US | THE-INTERNET-SUBWAY - The Internet Subway | 21.8K | 257 | 28 |
| AS19635US | SANDHILL-AS - Sandhill Telephone Cooperative, Inc. | 21.8K | 65.5K | 86 |
| AS26479US | SDC-AS - Point Broadband Fiber Holding, LLC | 21.8K | 65.5K | 17 |
| AS399195US | PEG-KR - PEG TECH INC | 21.8K | — | 16 |
| AS27609US | USC-UNIVERSITY-HOSPITAL - USC-University Hospital | 21.8K | — | 45 |
| AS394417US | AS-SONJ - NJOIT | 21.8K | — | 85 |
| AS7961US | RBC - Raw Bandwidth Communications, Inc. | 21.8K | — | 6 |
| AS32298US | CNSQ-AS32298 - Centersquare | 21.8K | 655.4K | 66 |
| AS214036US | ULTAHOST-AS Ultahost, Inc. | 21.8K | 1 | 86 |
| AS394437US | PSLIGHTWAVE - PS Lightwave | 21.5K | 65.5K | 63 |
| AS395111US | KVCNET-2009 - KVCHOSTING.COM LLC | 21.5K | — | 59 |
| AS394111US | FRTCCNET - Foothills Rural Telephone Cooperative Corporation, Inc. | 21.5K | 65.5K | 9 |
| AS26380US | MASTER-7-AS - MasterCard Technologies LLC | 21.5K | 6 | 71 |
| AS14383US | VCS-AS - M3COM of Virginia, Inc | 21.5K | — | 17 |
| AS15065US | SLIC-COM-INTERNET - Slic Network Solutions, Inc | 21.5K | — | 53 |
| AS400164US | RIPPLEFIBER-ASN-01 - Ripple Fiber Inc. | 21.5K | 76.3K | 80 |
| AS394395US | TOWSON-UNIVERSITY - Towson University | 21.5K | — | 3 |
| AS32354US | UNWIRED - Unwired | 21.5K | 65.5K | 38 |
| AS394391US | CWU-CENTRAL-WASHINGTON-UNIVERSITY - Central Washington University | 21.5K | — | 3 |
| AS13388US | EGYPTIAN-TELEPHONE - Egyptian Telephone | 21.5K | — | 6 |
| AS6185US | APPLE-AUSTIN - Apple Inc. | 21.5K | 49 | 96 |
| AS25651US | GRTI-NW - Gila River Telecommunications Inc. | 21.5K | 1 | 35 |
| AS26423US | DOMRES - Dominion Virginia Power | 21.5K | — | 7 |
| AS7832US | PCI FIBER ASN-1 - PCI Fiber, LLC | 21.5K | — | 35 |
| AS30110US | ADVANCED-COMMUNICATIONS-TECHNOLOGY - Advanced Communications Technology | 21.5K | — | 3 |
| AS46841US | FORKNETWORKING - Fork Networking, LLC | 21.5K | 65.5K | 15 |
| AS3376US | MCI-ASN - Verizon Business | 21.5K | — | 4 |
| AS46746US | SECURE-24-AS - NTT Managed Services Americas, LLC | 21.3K | — | 52 |
| AS33561US | LUNAVI-WY - Lunavi, Inc. | 21.2K | 4.1K | 28 |
| AS7970US | LEON-FL-SCHL - Leon County School District | 21.2K | — | 6 |
| AS6071US | UNISYS-AS-E - Unisys Corporation | 21.2K | — | 6 |
| AS16582US | NEXTLEVELINTERNET - NEXT LEVEL INTERNET, INC. | 21.2K | — | 30 |
| AS399837US | ALTAMAHA-FIBER - Altamaha Fiber | 21.2K | — | 37 |
| AS17139US | COLORADOCOLO - Corporate Colocation Inc. | 21.2K | — | 39 |
| AS63474US | SIRIUS-DATACENTERS - Sirius Computer Solutions, Inc. | 21.2K | — | 20 |
| AS16823US | NORTEXNET - Nortex Communications Company | 21.2K | — | 21 |
| AS16698US | NP-TECH - NP Tech | 21K | — | 23 |
| AS31753US | INMARSAT-GOVERNMENT-1 - Inmarsat Government | 21K | — | 17 |
| AS11013US | BLUE-AS - WideOpenWest Finance LLC | 21K | — | 6 |
| AS12050US | DIRECTV-BROADBAND - DIRECTV, LLC | 21K | — | 18 |
| AS40430US | COLO4JAX-AS - colo4jax, LLC | 21K | — | 8 |
| AS23376US | EN-23376 - EllumNet LLC | 21K | 131.1K | 10 |