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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 1K |
| — |
| 2 |
| AS209373US | SWISSNET-AS SWISSNET LLC | 1K | — | 4 |
| AS36056US | ALASK-15 - Alaska Native Medical Center | 1K | — | 1 |
| AS16838US | VERISIGN-CORP - VeriSign Infrastructure & Operations | 1K | — | 4 |
| AS26237US | NUVASIVE-HQ - NuVasive Inc. | 1K | — | 3 |
| AS27499US | SERVERS-DEPOT-01 - Servers Depot, LLC | 1K | — | 1 |
| AS33397US | GENSOCIETYUTAH - Genealogical Society of Utah | 1K | 65.8K | 3 |
| AS396037US | SOLSTICE-AM - Honeywell International Inc. | 1K | — | 4 |
| AS19056US | IETF-49 - Qualcomm, Inc. | 1K | — | 1 |
| AS53464US | CLADDED-GLASS-01 - Cladded Glass | 1K | — | 1 |
| AS18660US | KSUONLINE-I2 - Kentucky State University | 1K | — | 1 |
| AS22084US | GEI-NET - John Hagee Ministries | 1K | — | 3 |
| AS7909US | CARMAX-AS - CarMax Enterprise Services, LLC | 1K | — | 3 |
| AS16933US | ADVANTAS - Advantas Internet Solutions | 1K | — | 4 |
| AS202894US | DEVEXPERTS-INC-AS Devexperts Inc | 1K | — | 4 |
| AS53336US | BSQL-AS-01 - BSQL Networking | 1K | 512 | 5 |
| AS32823US | EVOLVER - Evolver, Inc. | 1K | — | 1 |
| AS11794US | 3C-WIRELESS - 3C Wireless, LLC | 1K | — | 1 |
| AS1734US | ROP-COCA-AS01 - Contra Costa County Regional Occupation Program / Richmond | 1K | 1 | 4 |
| AS42615US | igloo22225 June Slater | 1K | 69.9K | 11 |
| AS400104US | TERAEX - Tcloudnet | 1K | — | 2 |
| AS402810US | TDDT-NET - TDDT, | 1K | — | 4 |
| AS40507US | VIRTUALIZED - GameServerSupply, LLC | 1K | 2 | 6 |
| AS53527US | COUNTY-OF-LOS-ANGELES-SHERIFFS-DEPARTMENT - Los Angeles Sheriff's Department | 1K | — | 4 |
| AS33600US | TNTECH - Tennessee Technological University | 1K | — | 1 |
| AS25731US | KNOX-BOX-LLC - Knox Box Networks | 1K | 256 | 5 |
| AS7233US | YAHOO-US - Yahoo | 1K | 2 | 4 |
| AS40939US | P2PPSR - Project Babbage | 1K | 256 | 4 |
| AS7221US | TWRS-PHL - Natural Wireless, LLC | 1K | — | 1 |
| AS39992US | FDC-CTS-HOLDINGS - Fiserv Solutions, LLC | 1K | — | 2 |
| AS394009US | A10NETWORKS - A10 Networks Inc. | 1K | 256 | 5 |
| AS16388US | AS-PTI - Protronics Technologies, Inc. | 1K | — | 1 |
| AS26079US | MOMENTUM-ACCESS-SMPMF - Momentum Telecom, Inc. | 1K | — | 4 |
| AS402843US | GPLSL - Global | 1K | — | 4 |
| AS63480US | PROSOURCE-01 - ProSource Technology Solutions | 1K | — | 4 |
| AS36163US | HILLCO-LTD - HILLCO, LTD | 1K | — | 1 |
| AS398118US | VITANET-DATA - Commonwealth of Virginia Office of the Attorney General | 1K | — | 4 |
| AS27309US | TCC - The Computer Company, Inc. | 1K | — | 1 |
| AS11389US | HERITAGE-GALLERIES-AND-AUCTIONEERS - Heritage Capital Corporation | 1K | — | 4 |
| AS40343US | USSI-SKYFIBER - USSI Global | 1K | 1 | 4 |
| AS46334US | PRINCEWILLIAMCOSCHOOLS - Prince William County Public Schools | 1K | — | 4 |
| AS27639US | TEVA-NA - Teva Pharmaceuticals USA, INC | 1K | — | 3 |
| AS399660US | JANPA-ISP - WWLTH, Inc | 1K | — | 1 |
| AS11374US | WORKSMART-NETWORK-BACKBONE - Panterra Networks, Inc. | 1K | 3 | 7 |
| AS33010US | INTERCHURCH - The Interchurch Center | 1K | — | 1 |
| AS40748US | CARCOM-MCTX - CarrierCOM LP | 1K | — | 1 |
| AS400107US | THE-COLONY-HOA - Homeowners Association for the Colony at White Pine Canyon, + | 1K | — | 4 |