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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 |
| 37.9K |
| 65.5K |
| 25 |
| AS22576US | DATAPIPE-ASN2 - DataPipe, Inc. | 37.9K | — | 8 |
| AS29990US | ASN-APPNEXUS - Xandr Inc. | 37.9K | 128 | 48 |
| AS4913US | NET-CPRK - Speedcast Communications, Inc | 37.6K | — | 72 |
| AS19969US | JOESDATACENTER - CyberCloud Professionals LLC | 37.6K | 65.5K | 23 |
| AS36007US | KAMATERA - Kamatera, Inc. | 37.6K | 19 | 163 |
| AS395846US | DIRECTCOMID - Direct Communications Rockland, Inc | 37.6K | 131.3K | 24 |
| AS20432US | NE-FIBER-01 - North East Fiber, LLC | 37.6K | 65.5K | 32 |
| AS398156US | ACE-FIBER-01 - ACE Fiber | 37.6K | 65.5K | 30 |
| AS6949US | CHARLES-SCHWAB - Charles Schwab & Co., Inc. | 37.6K | — | 55 |
| AS19254US | KOCH-INDUSTRIES - Koch Industries, Inc. | 37.4K | — | 41 |
| AS11704US | VTCI - Valley Telephone Cooperative, Inc. | 37.4K | — | 15 |
| AS20477US | RANDOLPHTELEPHONE - Randolph Telephone Company | 37.4K | — | 22 |
| AS36092US | CENTENE - Centene Corporation | 37.4K | — | 47 |
| AS10692US | DLS-LITH - DLS Internet Services, Inc | 37.4K | — | 6 |
| AS25649US | AYERA-AS - AYERA TECHNOLOGIES, INC. | 37.1K | 65.5K | 25 |
| AS1255US | SMITHCOLLEGE-AS - Smith College | 37.1K | — | 14 |
| AS398704US | STACKSINC-BACKBONE - STACKS INC | 37.1K | 16.4K | 106 |
| AS6646US | AETNA - Aetna, Inc. | 37.1K | — | 20 |
| AS11114US | WINTEK-CORP - Wintek Corporation | 37.1K | 131.1K | 9 |
| AS11608US | ATG-11608 - Accretive Networks | 37.1K | 1 | 44 |
| AS26253US | SCINTERNET - South Central Communications, Inc. | 37.1K | 131.1K | 19 |
| AS13886US | CLOUD-SOUTH - Cloud South | 37.1K | — | 119 |
| AS25993US | ATT-LABS-AUSTIN-TX - AT&T Enterprises, LLC | 37.1K | 2 | 23 |
| AS399356US | KOSCIUSKO-CONNECT-01 - Kosciusko Connect LLC | 37.1K | — | 50 |
| AS18632US | VOLCANO-VISION - Volcano Vision, Inc. | 36.9K | — | 77 |
| AS7078US | MONMOUTH - Monmouth Internet Corp | 36.9K | 65.5K | 4 |
| AS20248US | TAKE2 - Take 2 Hosting, Inc. | 36.9K | — | 5 |
| AS10348US | HTDC - High Technology Development Corporation | 36.9K | — | 2 |
| AS12179US | INTERNAP-2BLK - Unitas Global | 36.9K | 65.5K | 31 |
| AS26472US | CHIBARDUN-TEL - Mosaic Telecom | 36.9K | — | 5 |
| AS63448US | HOLSTON-1 - HOLSTON ELECTRIC COOPERATIVE | 36.6K | — | 31 |
| AS7342US | VERISIGN-AS - VeriSign Infrastructure & Operations | 36.6K | 115 | 258 |
| AS22781US | STRTEC - Strong Technology, LLC. | 36.6K | 13.3K | 37 |
| AS19905US | SECURITYSERVICES - Vercara, LLC | 36.6K | 26 | 159 |
| AS27087US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 36.6K | — | 31 |
| AS33619US | AMD-MARKHAM - Advanced Micro Devices, Inc. | 36.6K | — | 96 |
| AS36224US | HCLTA94085 - HCL AMERICA INC | 36.6K | 2 | 101 |
| AS397731US | ELITEWORK-01 - EliteWork LLC | 36.4K | — | 11 |
| AS393856US | WGELD-ASN - City of Westfield (Gas & Electric Light Department) | 36.4K | — | 40 |
| AS17223US | DATABANK-LATISYS - Latisys-Chicago, LLC | 36.4K | 65.5K | 33 |
| AS27553US | TELNET - Telnet Worldwide, Inc. | 36.4K | 65.5K | 8 |
| AS11620US | SUCCEED-NET - Succeed.Net | 36.4K | — | 28 |
| AS16567US | NETRIX-16567 - Netrix LLC | 36.4K | 65.5K | 41 |
| AS396001US | TACO-396001 - City of Tacoma | 36.1K | — | 12 |
| AS26223US | SILVERSTAR-TELEPHONE - Silver Star Communications | 36.1K | 65.6K | 63 |
| AS397142US | FORT-COLLINS-CONNEXION - City of Fort Collins | 36.1K | 67.6K | 23 |