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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 | 3,140 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,178 |
| 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 | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,946 |
| AS701US | UUNET - Verizon Business | 43.6M | 999 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,371 |
| 768 |
| — |
| 3 |
| AS10745US | ARIN-ASH-CHA - ARIN Operations | 768 | 3 | 6 |
| AS902US | SPACECOASTCREDITUNIONMAIN - SPACE COAST CREDIT UNION | 768 | — | 3 |
| AS14121US | CIBC-WORLD-MARKETS - CIBC World Markets | 768 | — | 3 |
| AS14779US | YAHOO - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS394794US | COVE-2ND - Covenant Health | 768 | — | 3 |
| AS401731US | ROLL-TIDE - The University of Alabama Athletics | 768 | 1 | 4 |
| AS29981US | ROBINHOOD-MARKETS-1 - ROBINHOOD MARKETS, INC. | 768 | — | 3 |
| AS11739US | CHIRISA-TECHNOLOGY-PARKS-01 - Digital Fortress, Inc. | 768 | — | 3 |
| AS26182US | AS-EXCELLUS - Excellus Health Plan, Inc. | 768 | — | 3 |
| AS22246US | ASN-22246 - Nasdaq, Inc. | 768 | — | 2 |
| AS401305US | NIL - NIL Investment Link LLC | 768 | — | 3 |
| AS16830US | EIS-EQUINIX-AS - EIS Group, INC | 768 | — | 3 |
| AS395788US | KELLOGGCO - Kellogg Company | 768 | — | 3 |
| AS7324US | IFAX-ASN-1 - iFAX Solutions, Inc. | 768 | 16 | 4 |
| AS16756US | ABCV16756 - ABC Virtual Communications, Inc. | 768 | — | 3 |
| AS399450US | ADVANCIAL-ASN01 - ADVANCIAL FEDERAL CREDIT UNION | 704 | — | 4 |
| AS396155US | COA - City of Arlington | 640 | — | 3 |
| AS30327US | ALFA-MUTUAL - Alfa Mutual Insurance Company | 640 | — | 3 |
| AS23459US | APPLEBEE-NETWORKS - applebee | 640 | 3 | 6 |
| AS53719US | MAINSTREAM-TECHNOLOGIES-LRDC - Mainstream Technologies, Inc. | 640 | — | 3 |
| AS399745US | WTB - Washington Trust Bank | 608 | — | 5 |
| AS25895US | HART-AS1 - HART | 576 | — | 4 |
| AS398965US | ENERBANKUSA - EnerBank USA | 576 | — | 3 |
| AS18718US | MARVELL - Marvell Semiconductor Inc. | 576 | — | 4 |
| AS394856US | 394856 - Infinity Insurance Company | 576 | — | 3 |
| AS11317US | GPN - Great Plains Network | 544 | 64 | 3 |
| AS395351US | AG-1 - Advisor Group, Inc. | 544 | — | 3 |
| AS14252US | SCHOOLSPECIALTY - School Specialty, Inc. | 544 | — | 3 |
| AS26812US | ROTARY-INTERNATIONAL - Rotary International | 528 | — | 3 |
| AS396049US | EDNETICS - Ednetics, Inc. | 513 | 4.1K | 10 |
| AS19317US | BLUESKY-SOCIAL-PBC-1 - Bluesky Social, PBC | 512 | — | 2 |
| AS11546US | UNOMAHA-AS - The Board of Regents of the University of Nebraska | 512 | — | 1 |
| AS63205US | ELWOOD - Elwood Union Free School District | 512 | — | 2 |
| AS398665US | CSBSO - COUNTY OF SAN BERNARDINO | 512 | — | 2 |
| AS63357US | APOG-BSC - Apogee Telecom Inc. | 512 | — | 2 |
| AS33173US | MYGN-US - Myriad Genetics Incorporated | 512 | — | 2 |
| AS393815US | GEN4 - MemorialCare Health System | 512 | — | 2 |
| AS46458US | SAVINGCALL - Saving Call LLC | 512 | — | 2 |
| AS394964US | MARTINMARIETTA-AS1 - Martin Marietta Inc. | 512 | — | 2 |
| AS13803US | E-SYNCNET - CRC Inc. | 512 | — | 2 |
| AS62973US | CATAWBAVALLEYMC - Catawba Valley Medical Center | 512 | — | 2 |
| AS14696US | GU-LFTC - GLOBALFOUNDRIES U.S. Inc. | 512 | — | 1 |
| AS62669US | SANS-INSTITUTE - SANS INSTITUTE | 512 | — | 2 |
| AS400731US | VTS-SERVICES - VTS Services Inc | 512 | 2 | 4 |
| AS394866US | CORNERSTONE-HOME-LENDING-INC - Cornerstone Home Lending, Inc. | 512 | — | 2 |
| AS393383US | SISD-ASN - Spring Independent School District | 512 | — | 2 |