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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS400961US | LOGISTIVIEW-CLOUD-01 - LogistiVIEW, Inc. | 512 | — | 2 |
| AS54649US | ADC-ATLANTA - AutomationDirect.com, Inc. | 512 | — | 1 |
| AS12244US | SECURITAS ELECTRONIC SECURITY - SUPREME - Securitas Electronic Security, Inc. | 512 | — | 2 |
| AS19511US | ELECTROLUX-NA - Electrolux Home Products, Inc. | 512 | — | 2 |
| AS36074US | 3330-TMMC - Torrance Memorial Medical Center | 512 | — | 2 |
| AS30438US | RESOLVE-BGP01 - Resolve I.T. | 512 | 1 | 3 |
| AS406US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 512 | — | 2 |
| AS20047US | CITYOFVABEACH - City of Virginia Beach, Virginia | 512 | — | 2 |
| AS32549US | JCISD-1 - Jackson County Intermediate School District | 512 | — | 1 |
| AS27568US | WAVE-LAB - Wave Broadband | 512 | 65.5K | 2 |
| AS39239US | PHOENIXNAP-ES PHOENIX NAP, LLC. | 512 | 257 | 4 |
| AS398722US | CENSYS-ARIN-03 - Censys, Inc. | 512 | 2 | 4 |
| AS39983US | PBGC-HQ-AS - Pension Benefit Guaranty Corp. | 512 | — | 2 |
| AS30435US | H9K-1 - Hal 9000 LLC | 512 | — | 2 |
| AS402427US | NXST-AS402427 - Nexstar | 512 | — | 2 |
| AS55049US | ASN-SCL - Samlyn Capital, LLC | 512 | — | 2 |
| AS396505US | EMC - ENLOE MEDICAL CENTER | 512 | — | 1 |
| AS399947US | AURORA-GEO - Pacific Dataport Inc. | 512 | — | 1 |
| AS393322US | CALERO - Calero MDSL | 512 | — | 1 |
| AS16996US | TARRANTCOUNTYTX-GOV - Tarrant County | 512 | — | 2 |
| AS40106US | OGIL-NA-SF - The Ogilvy Group, LLC | 512 | — | 2 |
| AS14707US | ABSHOU-ASN - American Bureau of Shipping | 512 | — | 2 |
| AS25699US | WILSONART-INTL - Wilsonart International | 512 | — | 2 |
| AS21900US | LBPC - LAW BULLETIN PUBLISHING COMPANY | 512 | — | 2 |
| AS209177US | ArnoldPorter Arnold & Porter Kaye Scholer LLP | 512 | — | 1 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS393400US | LUXOTTICA-NA2 - Luxottica of America Inc. | 512 | — | 1 |
| AS401727US | MEOWNET - Aurora Development LLC | 512 | 768 | 5 |
| AS36575US | WCVB-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS394528US | TRUWEST-CREDIT-UNION - Truwest Credit Union | 512 | — | 2 |
| AS19482US | GTLLP - Greenberg Traurig P.A | 512 | — | 2 |
| AS18598US | CEQUINT-INC - Transaction Network Services, Inc. | 512 | — | 2 |
| AS11640US | GROUP-ONE-TRADING - Group One Trading LLC | 512 | — | 2 |
| AS396326US | ASN-WATCO-IPV4-DC - Watco Companies, LLC. | 512 | — | 2 |
| AS18958US | SSI-AS-01 - THE SSI GROUP, LLC. | 512 | — | 2 |
| AS394260US | MCICS-394260 - Verizon | 512 | — | 2 |
| AS54156US | CITY-OF-HUNTSVILLE - City of Huntsville | 512 | — | 2 |
| AS36667US | PHIBRO-ANIMAL-HEALTH-CORPORATION-ARIN - Phibro Animal Health Corporation | 512 | 18 | 5 |
| AS14448US | 14448 - High Point University | 512 | — | 2 |
| AS27208US | DISCOVERY-ENERGY-LLC-01 - Discovery Energy, LLC | 512 | — | 2 |
| AS53769US | BBKLAW - Best Best & Krieger LLP | 512 | — | 2 |
| AS395216US | TELLIGEN - TELLIGEN | 512 | — | 2 |
| AS13510US | BAYSTATEHEALTH - Baystate Health, Inc. | 512 | — | 2 |
| AS36173US | KCI - Kinetic Concepts, Inc. | 512 | — | 2 |
| AS1562US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS53444US | ZSCALER-SJC - ZSCALER, INC. | 512 | — | 2 |