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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| — |
| 2 |
| AS1974US | MEHEALTH-SOUTH - Southern Maine Medical Center | 512 | — | 2 |
| AS33060US | THEPCU-AS-THE-POLICE-CREDIT-UNION - SFPCU | 512 | — | 2 |
| AS395134US | CITYOFDAVIS - City of Davis | 512 | 256 | 3 |
| AS27421US | APPLAUSEMA - Applause | 512 | — | 2 |
| AS16688US | PEOPLENET-COMM-AS - PeopleNet Communications Corp | 512 | — | 2 |
| AS1632US | SONIC-HEALTHCARE-USA-HNY - SONIC HEALTHCARE USA, INC. | 512 | — | 2 |
| AS400347US | APOG-BJU - Apogee Telecom Inc. | 512 | — | 1 |
| AS29764US | AMETEK-CTC - AMETEK Inc. | 512 | — | 2 |
| AS16593US | FMCIN - First Merchants Corporation | 512 | — | 2 |
| AS21982US | PRDCA-ASN - Panasonic R & D Company of America | 512 | — | 2 |
| AS399987US | TACOMA-PIERCE-COUNTY-HEALTH-DEPARTMENT - Tacoma-Pierce County Health Department | 512 | — | 2 |
| AS54023US | ASIC-ONT - APPLIED SYSTEMS, INC | 512 | — | 2 |
| AS395435US | GAIA - Gaia | 512 | — | 2 |
| AS54431US | LUNAVI-DEN - Lunavi, Inc. | 512 | — | 1 |
| AS399445US | TVCC-NET1 - TVCC | 512 | — | 2 |
| AS395241US | MONITORING-AMERICA-ALARM-CO-OP - Monitoring America Alarm Co-Op | 512 | — | 2 |
| AS393401US | HAYSMED - Hays Medical Center | 512 | — | 2 |
| AS32206US | OBERTHURCS-USA - Idemia America Corp. | 512 | — | 2 |
| AS401687US | AMNS CALVERT - AM/NS Calvert LLC | 512 | — | 2 |
| AS394845US | REMPREX-BGP - REMPREX, LLC | 512 | — | 2 |
| AS3043US | IMS - Amphibian Media Corporation | 512 | 65.5K | 3 |
| AS46577US | HALNET-FMT2 - Halibut Electronics, Inc | 512 | 2 | 4 |
| AS399698US | TRAVELWIFI - TRAVELWIFI LLC | 512 | — | 2 |
| AS55062US | GSC-MINNEAPOLISMN - Gannett Supply Corp. - Minneapolis, MN | 512 | — | 2 |
| AS36011US | AHSYS-ASN - Atlantic Health System | 512 | — | 2 |
| AS19147US | VANCOUVER-CLINIC - The Vancouver Clinic, Inc. P.S. | 512 | — | 2 |
| AS50075US | zayocloud-de Zayo Group, LLC | 512 | — | 2 |
| AS19314US | THERAWLINGSCO-LAGRANGE-KY - The Rawlings Company, LLC | 512 | — | 2 |
| AS36014US | ONE-STOP-INTERNET - One-Stop Communications of PA Inc | 512 | — | 1 |
| AS393663US | ACUMENT - Acument Global Technologies, Inc. | 512 | — | 2 |
| AS32411US | ASSURERX-HEALTH-CORPORATE - AssureRx Health, Inc. | 512 | — | 2 |
| AS21907US | SHAIKH-CORP - Southern Data Center | 512 | 16.4K | 2 |
| AS400770US | RCPS-SBO - City of Radford | 512 | — | 2 |
| AS393931US | HS-AS-001 - HealthStream, Inc. | 512 | — | 2 |
| AS54866US | TCS-EDUCATION-SYSTEM - TCS Education System | 512 | — | 2 |
| AS26966US | SPRAY-AS - Spraying Systems Co. | 512 | — | 2 |
| AS22196US | NEULION - NeuLion, Inc. | 512 | — | 2 |
| AS27004US | SFB - Star Financial Bank | 512 | — | 2 |
| AS26963US | CCCU-1 - City & County Credit Union | 512 | — | 2 |
| AS17078US | ALLENCO - Allen & Company LLC | 512 | — | 2 |
| AS46732US | LEPRINO-FOODS-INC - LEPRINO FOODS DAIRY PRODUCTS COMPANY | 512 | — | 2 |
| AS40953US | RCW-ASN-01 - River City Wireless, INC. | 512 | — | 2 |
| AS396408US | PUBLICINET - City of Greensboro, NC | 512 | — | 1 |
| AS63443US | DC7 - NORTHWEST FEDERAL CREDIT UNION | 512 | — | 2 |
| AS401166US | JABIL-AS-US-PH - Jabil | 512 | — | 1 |
| AS395774US | ESVC-ASN - Eastern Shore Communications, LLC | 512 | 65.5K | 3 |