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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. | 218M | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS26902US | CEKKENT - Cekkent LLC | 256 | 256 | 2 |
| AS19601US | CADIA - Cadian Capital Management, LP | 256 | — | 1 |
| AS136540US | OGILVY-AS-AP - The Ogilvy Group, LLC. | 256 | — | 1 |
| AS401787US | OMNITEC - Omnitec Corporation | 256 | — | 1 |
| AS38439US | ZFSRENT-38439 - ZFS.RENT LLC | 256 | 7 | 8 |
| AS19887US | KIASN - KI- | 256 | — | 1 |
| AS399482US | PDX - Blurb, Inc. | 256 | — | 1 |
| AS399914US | N-LAB - N-LAB | 256 | 2 | 3 |
| AS46150US | SNHU - Southern New Hampshire University | 256 | — | 1 |
| AS396219US | CBEC - Craig Botetourt Electric Cooperative | 256 | — | 1 |
| AS62867US | ALDINEISD-ASN01 - Aldine Independent School District | 256 | — | 1 |
| AS399750US | DIG-01 - Funeral Directors Life Insurance Company | 256 | — | 1 |
| AS402355US | VISENTRY-NET - Visentry | 256 | — | 1 |
| AS1428US | DRW-HOLDINGS - DRW Holdings, LLC | 256 | — | 1 |
| AS33407US | STRAYERUNVERSITY - Strayer University | 256 | — | 1 |
| AS22180US | PRECISION-IT - PRECISION TECHNOLOGY, INC. | 256 | — | 1 |
| AS401397US | MERCURY-RADIO-ARTS - Mercury Radio Arts, Inc. | 256 | — | 1 |
| AS6141US | GRINNELL-MUTUAL-REINSURANCE-COMPANY - Grinnell Mutual Reinsurance Company | 256 | — | 1 |
| AS396514US | CI-AS - Carey International, Inc. | 256 | — | 1 |
| AS26214US | ADS-AS2 - A. Duda & Sons, Inc. | 256 | — | 1 |
| AS401602US | KEYSTONEREN - Keystone REN, LLC | 256 | 65.5K | 2 |
| AS26363US | MEDTRONIC-AS-2 - Medtronic, Incorporated | 256 | — | 1 |
| AS62936US | TDEM-HQ-01 - Texas Division of Emergency Management | 256 | — | 1 |
| AS22028US | TEXAS-LIFE-HOME-OFFICE - Texas Life Insurance Company | 256 | — | 1 |
| AS402629US | MVNO-VOIP-ASN - TAIPEI101 | 256 | 1 | 2 |
| AS399607US | LCPS-VA - Louisa County Public Schools | 256 | — | 1 |
| AS53331US | IMPERIAL-CAPITAL-GROUP-LLC - Imperial Capital Group LLC | 256 | — | 1 |
| AS395859US | INTERNETCONNECT - Internet Connect, LLC. | 256 | — | 1 |
| AS46665US | ASM - Applied Statistics & Management, Inc. | 256 | — | 1 |
| AS40919US | FIDELITYEXPRESS - FIDELITY EXPRESS | 256 | — | 1 |
| AS25910US | OXNARDCITY - City of Oxnard | 256 | — | 1 |
| AS394537US | DOW-CREDIT-UNION-01 - Dow Credit Union | 256 | — | 1 |
| AS29703US | DEER-PARK-REFINING-LP - Deer Park Refining Limited Partnership | 256 | — | 1 |
| AS14308US | COL-ETS - City of Longmont | 256 | — | 1 |
| AS46111US | EDINA-REALTY-HOME-SERVICES - Edina Realty, Inc. | 256 | — | 1 |
| AS401114US | COLUMBIACOUNTYWI - Columbia County | 256 | — | 1 |
| AS393712US | DMA-FWA-DC - DMA | 256 | — | 1 |
| AS46400US | MARYWOOD-MULTI-HOME-1 - Marywood University | 256 | — | 1 |
| AS400477US | ALASKA-COURT-SYSTEM - Alaska Court System | 256 | 4.1K | 2 |
| AS32106US | CHECKPOINT - Check Point Software Technologies, Inc. | 256 | — | 1 |
| AS393703US | IDEAPS-TX - IDEA Public Schools | 256 | — | 1 |
| AS16588US | POLITICO - Politico, LLC | 256 | — | 1 |
| AS23213US | THRIVE-CA4-MTL - Thrive Operations, LLC | 256 | — | 1 |
| AS29891US | NCCWO-ASN1-VZBLVL3CMCST - National Cable Communications LLC | 256 | — | 1 |
| AS29784US | GREENLIGHT-CAPITAL - Greenlight Capital | 256 | — | 1 |
| AS219106US | EU-VOXIMPLANTINC Voximplant, Inc. | 256 | — | 1 |