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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| — |
| — |
| 0 |
| AS27644US | THREATSTOP - ThreatSTOP | — | 18 | 3 |
| AS2700US | CLARIS-CORP - Claris International Inc. | — | — | 0 |
| AS25665US | EV-CLOUD - Veritas Technologies LLC | — | — | 0 |
| AS23440US | PEAK10CIN - Flexential Corp. | — | — | 0 |
| AS23365US | IFBYPHONE - Invoca, Inc. | — | — | 0 |
| AS2916US | CYBER-AS - Creative Cybernetics | — | — | 0 |
| AS2965US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2893US | CLI-NET - Computational Logic, Inc. | — | — | 0 |
| AS63437US | ARBOREAL-STUDIOS-01 - Arboreal Studios Inc. | — | 1 | 1 |
| AS1655US | DNIC-AS-01655 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS2035US | NGIS-AS3 - Northrop Grumman Corp. | — | — | 0 |
| AS1868US | DISN-PILOTNET14 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS1728US | SRI-TPA-GW1 - SRI-TPA-gw1 | — | — | 0 |
| AS1524US | DNIC-ASBLK-01522-01526 - Headquarters, USAISC | — | — | 0 |
| AS30340US | AS-TIERP-30340 - TierPoint, LLC | — | — | 0 |
| AS10488US | TFM-ASN - TFM Associates LLC | — | — | 0 |
| AS10483US | AKPERMFUND - Alaska Permanent Fund | — | — | 0 |
| AS4002US | COGENT-4000 - Cogent Communications, LLC | — | — | 0 |
| AS11880US | TICKE-19-ASN - Tickets.com, Inc. | — | — | 0 |
| AS13421US | SBCIS-ABLNTX - AT&T Enterprises, LLC | — | — | 0 |
| AS13411US | W3D - W3D Trading Inc | — | — | 0 |
| AS19744US | EDUCATION-DEVELOPMENT-CENTER - Education Development Center Inc. | — | — | 0 |
| AS12014US | AMERICAS-HEALTH-INSURANCE-PLANS - AHIP | — | — | 0 |
| AS11846US | BROADVIEWNET - Windstream Communications LLC | — | — | 0 |
| AS11843US | AFN-01 - Auravox, LLC | — | — | 0 |
| AS30510US | ATOS-PISCATAWAY - Atos IT Solutions and Services Inc | — | — | 0 |
| AS11349US | WINDSTREAM - Windstream Communications LLC | — | — | 0 |
| AS30693US | AS30693 - Eonix Corporation | — | — | 0 |
| AS30624US | CME - Chicago Mercantile Exchange | — | — | 0 |
| AS30314US | KAN-ED - Kansas Research and Education Network | — | — | 0 |
| AS401865US | ITHACA-NETWORK - Ithaca Broadband LLC | — | 3.1M | 6 |
| AS30273US | DIDL-1 - DreamWorks Studios | — | — | 0 |
| AS30266US | RF-SJC-DATACENTER - Rodan & Fields LLC | — | — | 0 |
| AS22852US | PLESKLOGIN - PleskLogin Net | — | — | 0 |
| AS29740US | SSI-BGP4 - Schaefer Systems International, Inc. | — | — | 0 |
| AS27525US | FNF-CLOUD2 - Fidelity National Financial Inc. | — | — | 0 |
| AS27561US | BRONGUS - Brongus | — | — | 0 |
| AS33410US | MANDIANT-US2 - Mandiant, Inc. | — | — | 0 |
| AS33445US | YELP - Yelp! Inc. | — | — | 0 |
| AS33336US | TIMEINC-TAMPA-ASN - Meredith Corp. | — | — | 0 |
| AS33291US | MANOV-ISP - Manov Investments, LLC | — | — | 0 |
| AS32451US | TX-CLOUD - BigTech | — | — | 0 |
| AS27494US | NATL-MACH10 - Performive LLC | — | — | 0 |
| AS32791US | OCNL-AS32791 - Operations & Compliance Network LLC | — | — | 0 |
| AS32652US | ASHERECHICAGODC - HERE North America LLC | — | — | 0 |
| AS32089US | CHARTER-32089-NA - Charter Communications LLC | — | — | 0 |