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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| — |
| — |
| 0 |
| AS7740US | WJP - WJP Networking | — | — | 0 |
| AS13404US | ASN-13404 - GoFIBER | — | — | 0 |
| AS10386US | IC-ASN - Internet Connections, Inc. | — | — | 0 |
| AS6915US | HCSNET-ASNBLK - Hayes Computer Systems | — | — | 0 |
| AS6605US | F4IXNY - F4 Networks | — | — | 0 |
| AS6331US | AIT-NET - Atlantic Internet Technologies, Inc. | — | — | 0 |
| AS6386US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS6274US | COGENT-6274 - Cogent Communications, LLC | — | — | 0 |
| AS7205US | POINTBREAK - PointBreak Communications SystemsAG | — | — | 0 |
| AS19371US | ENOVATEL-1 - Hawaiian Telcom Services Company, Inc. | — | — | 0 |
| AS25781US | FCASD - Fox Chapel Area School District | — | — | 0 |
| AS16945US | CIMCO4 - First Communications LLC | — | — | 0 |
| AS26565US | MDFDOR-ASN - City of Medford | — | — | 0 |
| AS16675US | CLEARDATA - Clear DATA Networks Inc. | — | — | 0 |
| AS26755US | ACALANES-UNION-HIGH-SCHOOL-DISTRICT - Acalanes Union High School District | — | — | 0 |
| AS26655US | PSFC - Pacific Service Federal Credit | — | — | 0 |
| AS26291US | TELEGO-NET - Tele Go, Inc | — | — | 0 |
| AS26773US | SYD-NIDR - PIMCO | — | — | 0 |
| AS25954US | CCG-INET - County Commissioners for Calvert County, Maryland | — | — | 0 |
| AS16953US | DELUXE-MEDIA-INC - Deluxe Media | — | — | 0 |
| AS21827US | CALIX-TX-DAL - Calix, Inc. | — | — | 0 |
| AS27100US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | — | — | 0 |
| AS27007US | ADPSLC - Automatic Data Processing, Inc. | — | — | 0 |
| AS26979US | IVANTI-SJ - Ivanti, Inc. | — | — | 0 |
| AS22161US | PROJECT-ROVER-ASN - Yahoo Holdings Inc. | — | — | 0 |
| AS22212US | INTERNAP-PEERING-NETWORK - Unitas Global | — | — | 0 |
| AS21962US | EDGEWAVE2 - Edgewave, Inc. | — | — | 0 |
| AS21894US | INTUIT-MINTBILLS-MILPITAS - Intuit Inc. | — | — | 0 |
| AS20124US | DE-TELECOMM - Windstream Communications LLC | — | — | 0 |
| AS13642US | CITI-FFG - Citigroup Inc. | — | — | 0 |
| AS19205US | SPICA-ANYCAST-BYOIP - SPICA Industry LLC | — | — | 0 |
| AS19100US | GPSAC - General Pacific, Inc. | — | — | 0 |
| AS20358US | GG-SUGARSHACK - SUGAR SHACK, LLC | — | — | 0 |
| AS19274US | SYSTEM-66 - System Techniques | — | — | 0 |
| AS17347US | PEPCO - Potomac Electric Power Company | — | — | 0 |
| AS17314US | REDHAT-HOSTED - Red Hat, Inc. | — | — | 0 |
| AS19973US | WBS-JAN-1 - Verizon Business | — | — | 0 |
| AS63079US | NRA-AS - National Restaurant Association | — | — | 0 |
| AS19884US | DENIR-1-ASN - DENIRO MARKETING, LLC. | — | — | 0 |
| AS19778US | CTSBGP - Custom Technology Solutions, LLC | — | — | 0 |
| AS27333US | EBRPD-AS - East Bay Regional Park District | — | — | 0 |
| AS15334US | RESPONSYS - Responsys Inc. | — | — | 0 |
| AS15014US | TTS-ASN - Total Tool Supply, Inc. | — | — | 0 |
| AS16472US | AS16472 - Cisco Webex LLC | — | — | 0 |
| AS17156US | ZIXI - Zix Corporation | — | — | 0 |
| AS14815US | JAXXNET-AS - Jaxx Aerospace & Defense Company | — | — | 0 |