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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| 512 |
| 3 |
| AS11462US | ARAMARK-CA-TORHQ - ARAMARK | 256 | — | 1 |
| AS399370US | KIRKLAND-ELLIS-SF - Kirkland & Ellis LLP | 256 | — | 1 |
| AS395160US | SWIFTTRAC - Jobsite Software, Inc. | 256 | — | 1 |
| AS395952US | MARKETLEADER - Constellation Web Solutions, Inc. | 256 | — | 1 |
| AS13317US | AS-WAN - Wan holdings LLC | 256 | 256 | 2 |
| AS400966US | CLOUDQUANT-01 - CloudQuant, LLC | 256 | — | 1 |
| AS11441US | FREDERICK-MEMORIAL-HOSPITAL - Frederick Memorial Healthcare System | 256 | — | 1 |
| AS394987US | SSC-AS1 - Southern States Cooperative, Inc. | 256 | — | 1 |
| AS393817US | LMC-BH - Lake Michigan College | 256 | — | 1 |
| AS401040US | LEGGETT-PLATT-INCORPORATED - Leggett & Platt, Incorporated | 256 | — | 1 |
| AS22928US | CMR1385 - CMR LLC | 256 | — | 1 |
| AS31830US | MURRAY-CALLOWAY-COUNTY-HOSPITAL - Murray-Calloway County Hospital | 256 | — | 1 |
| AS607US | RNM-15-ASN-01 - Revelation Network Management, Inc. | 256 | — | 1 |
| AS18977US | WIKTEL-VOICE - Wikstrom Telephone Company, Incorporated | 256 | — | 1 |
| AS22603US | SHARKBACKUP-DALLAS-03 - SharkBackup LLC | 256 | — | 1 |
| AS23124US | VEEAM-US2 - VEEAM SOFTWARE CORPORATION | 256 | — | 1 |
| AS36739US | COLLIER-COUNTY-GOVERNMENT-BCC - Collier County Government | 256 | — | 1 |
| AS397661US | PILLEN-OFFICE-01 - Pillen Family Farms, Inc. | 256 | — | 1 |
| AS32455US | NEXTFLEX-ASN - NextFlex | 256 | — | 1 |
| AS23502US | EXECPRO-AS - Execpro Information Services, LLC | 256 | — | 1 |
| AS20427US | AAAE - American Association of Airport Executives | 256 | — | 1 |
| AS401939US | NEXBANK-PUBLIC - NexBank | 256 | — | 1 |
| AS46398US | PII - Taylor Corporation | 256 | — | 1 |
| AS32330US | CENTRAL-GARDEN-AND-PET - Central Garden & Pet Company | 256 | — | 1 |
| AS86US | DXC-AS86 - DXC US Latin America Corporation | 256 | 193 | 14 |
| AS22335US | MREN - Metropolitan Research and Education Network | 256 | — | 1 |
| AS63097US | CITY-OF-POWAY - City of Poway | 256 | — | 1 |
| AS63413US | EROOOM - eRoom Securities LLC | 256 | — | 1 |
| AS26533US | STIBARC-AS-01 - STiBaRC | 256 | 5 | 6 |
| AS62585US | MC-NET - Messiah University | 256 | — | 1 |
| AS46794US | PENDER COUNTY SCHOOLS - Pender County Schools | 256 | — | 1 |
| AS398134US | BENEVIS-DC1-ASN - Benevis Corp | 256 | — | 1 |
| AS395300US | MADONNA-REHABILITATION-HOSPITAL - Madonna Rehabilitation Hospital | 256 | — | 1 |
| AS22225US | PRESTIGE-BRANDS-INC - Prestige Brands, Inc. | 256 | — | 1 |
| AS398548US | MCDUSASN02 - McDonald's Corporation | 256 | — | 1 |
| AS19593US | SMITHDRUGCOMPANY - Smith Drug Company | 256 | — | 1 |
| AS399635US | CC-VISA-02 - Cardinal Commerce Corporation | 256 | — | 1 |
| AS17238US | CSEG-1 - Columbia Southern Education Group, Inc. | 256 | — | 1 |
| AS54731US | ASSOCIA-ASN - Associa | 256 | — | 1 |
| AS32497US | INTELLIPOP-ATL - Intellipop, LLC | 256 | — | 1 |
| AS23145US | CALL-HOME-EDGE-CLOUD-FLARE - IBM | 256 | 1 | 2 |
| AS398923US | MAINE-PERS - MainePERS | 256 | — | 1 |
| AS54752US | EQSERVERS-US302 - Eqservers LLC | 256 | — | 1 |
| AS401475US | CIGIE-ASN1 - CIGIE | 256 | 1 | 2 |
| AS393216US | UCC-EDU-AS - Union County College | 256 | — | 1 |
| AS398334US | VOCINITY - Tekvizion PVS, Inc. | 256 | — | 1 |