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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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,721 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
| 68.3M |
| 366 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,106 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,574 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| SCHNEIDER - Schneider National, Inc. |
| 69.9K |
| — |
| 5 |
| AS14443US | BFS-49-14443 - Broadridge Financial Solutions, Inc. | 69.9K | — | 3 |
| AS7328US | CHOP - The Children's Hospital of Philadelphia | 69.9K | — | 4 |
| AS56508US | ARDC Amateur Radio Digital Communications | 69.9K | — | 18 |
| AS25899US | LSNET - LS Networks | 69.9K | 131.1K | 51 |
| AS22586US | AS22586 - Gulfstream Aerospace Corporation | 69.9K | — | 18 |
| AS32798US | HIGHLINE-AS - Highline Services, LLC | 69.9K | 114.7K | 80 |
| AS32229US | JSUMS-ARIN - Jackson State University | 69.6K | — | 15 |
| AS11252US | ISU-NET-AS - Idaho State University | 69.6K | — | 10 |
| AS3390US | UMKCNET - University of Missouri - Kansas City | 69.6K | 16 | 6 |
| AS36236US | NETACTUATE - NetActuate, Inc | 69.6K | 37.4K | 256 |
| AS394769US | UMF-7-AS - University of Michigan - Flint | 69.6K | — | 2 |
| AS12013US | FAUNET - Florida Atlantic University | 69.6K | — | 8 |
| AS317US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 69.6K | 256 | 10 |
| AS25691US | CTSTATEU - Connecticut State Colleges & Universities, Connecticut State University System | 69.6K | — | 2 |
| AS348US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 69.4K | 256 | 17 |
| AS30041US | RACE - Race Tech, LLC | 69.4K | 1.1M | 271 |
| AS25807US | ARLINGTONVA - Arlington County Government | 69.4K | — | 7 |
| AS349US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 69.4K | 256 | 17 |
| AS26783US | MARICOPA-COUNTY-COMMUNITY-COLLEGE-DISTRICT - Maricopa County Community College District | 69.4K | — | 35 |
| AS398130US | MARYLAND-AOC - Maryland Administrative Office of the Courts (AOC) | 69.1K | — | 15 |
| AS21899US | ABBOTT - Abbott Laboratories | 69.1K | — | 6 |
| AS4046US | FAA - Federal Aviation Administration | 69.1K | 65.5K | 17 |
| AS53984US | AS-WELLSTAR - Wellstar Health System | 68.9K | — | 10 |
| AS4US | ISI-AS - University of Southern California | 68.9K | 65.5K | 47 |
| AS14127US | ILAND - Iland Internet Solutions Corporation | 68.9K | — | 237 |
| AS17402US | CENTURYLINK-LEGACY-EMBARQ-CHSK - CenturyLink Communications, LLC | 68.9K | — | 25 |
| AS33670US | NOVASOUTHEASTERNAS - Nova University | 68.9K | — | 13 |
| AS16928US | UTCNET - RTX Corporation | 68.9K | — | 14 |
| AS6124US | MARIST - Marist University | 68.9K | 1 | 5 |
| AS302US | BCM-INFO-NET-AS - Baylor College of Medicine | 68.9K | 2 | 13 |
| AS63479US | HAMWAN - HamWAN | 68.9K | — | 11 |
| AS3681US | FIU - Florida International University | 68.9K | 1 | 8 |
| AS11355US | SHELL - Shell Information Technology International, Inc. | 68.9K | — | 13 |
| AS40382US | HENNEPIN-COUNTY - Hennepin County | 68.9K | 69.6K | 16 |
| AS321US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.6K | 256 | 14 |
| AS316US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.6K | 256 | 11 |
| AS364US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.6K | 256 | 11 |
| AS10968US | CARGILL-NET - Cargill Incorporated | 68.6K | — | 13 |
| AS20135US | MTL-19 - Millennium Telcom LLC | 68.6K | 12.3K | 45 |
| AS25978US | RUSH-EXTERNAL - Rush University Medical Center | 68.6K | — | 5 |
| AS19009US | ONECLEVELAND - OneCleveland | 68.6K | 65.5K | 89 |
| AS6319US | MARRIOT-ASN - Marriot Corporation | 68.6K | — | 10 |
| AS3428US | ESNET-AS - ESnet | 68.4K | 16 | 6 |
| AS7872US | USAP-ASN - United States Antarctic Program | 68.4K | 16 | 10 |
| AS46453US | ABBOTT-AS46453 - Abbott Laboratories | 68.4K | — | 7 |
| AS15307US | CHILDRENS-SEATTLE - Childrens Hospital and Regional Medical Center | 68.4K | — | 12 |