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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. | 218M | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS400781US | XTC-NA-ASN-01 - XenTegra Connect | 512 | — | 2 |
| AS63431US | K-LOVE - EMF Broadcasting | 512 | — | 2 |
| AS36046US | BOTC - BOTC | 512 | — | 2 |
| AS400555US | ISOGRAM - Isogram, LLC | 512 | 65.5K | 3 |
| AS60653US | FEEDLY-DEVHD FEEDLY, INC. | 512 | — | 2 |
| AS397429US | SEATTLE-HQ - EXPEDIA, INC | 512 | — | 2 |
| AS13457US | 13457-WOLVERINE-POWER-SUPPLY - Wolverine Power Supply | 512 | — | 2 |
| AS29921US | SAIFCO - State Accident Insurance Fund Corporation | 512 | 3 | 5 |
| AS400141US | PATTERSONVILLE-TELCO-OHIO - Pattersonville Telephone Co | 512 | — | 1 |
| AS398795US | TALLWIRELESS - RFPT COMPANY LLC | 512 | 50 | 7 |
| AS14207US | CSG-OD2 - CSG Systems Inc. | 512 | — | 2 |
| AS1003US | ANDREWNET - andrewnet | 512 | 10 | 12 |
| AS397476US | BCSUSA-LO-ASN-01 - Biotronik Corporate Services U.S., Inc. | 512 | — | 2 |
| AS32562US | SLACKER-1 - Slacker Inc. | 512 | — | 2 |
| AS26941US | SHUTTERSTOCK - Shutterstock Inc | 512 | — | 2 |
| AS400835US | MIDD-ASN-01 - Middleby Corp | 512 | — | 2 |
| AS62907US | ZSCALER-CORP - ZSCALER, INC. | 512 | 259 | 6 |
| AS32428US | BELZ-INVESTCO - BELZ ENTERPRISES | 512 | — | 2 |
| AS26992US | UHG-CIMPLIFY - CIMplify | 512 | — | 2 |
| AS10786US | CHARTWAY-FCU - Chartway Federal Credit Union | 512 | — | 2 |
| AS402213US | BUFFALO BILLS STADIUM - Bills stadium and events company llc | 512 | — | 2 |
| AS400025US | LCISD - Lapeer ISD | 512 | — | 2 |
| AS32887US | GEHA - GEHA | 512 | — | 2 |
| AS16905US | LEARN-RESEARCH - LEARN | 512 | 2 | 4 |
| AS395130US | DAY-PITNEY-LLP - Day Pitney LLP | 512 | — | 2 |
| AS400656US | METRO-SERVICE - Metro Service Center | 512 | 65.5K | 2 |
| AS401156US | MCB - Metropolitan Commercial Bank | 512 | — | 2 |
| AS53796US | MCH - Miami Children's Hospital | 512 | — | 1 |
| AS46895US | CSGN - CSG Systems Inc. | 512 | — | 2 |
| AS395410US | USALLIANCE-FCU-411 - USAlliance Federal Credit Union | 512 | — | 2 |
| AS62740US | TBKBANK - TBK Bank, SSB | 512 | — | 2 |
| AS395955US | INTERLINE-BRANDS-INC - Interline Brands, Inc. | 512 | — | 2 |
| AS36546US | OREILLYAUTO - O'Reilly Automotive Inc. | 512 | — | 2 |
| AS20236US | BEAL-SERVICE-CORPORATION - Beal Service Corporation | 512 | — | 2 |
| AS22844US | TRADERJOE - TRADER JOE'S COMPANY | 512 | — | 2 |
| AS65US | AF-RASN-65 - Air Force Systems Networking | 512 | — | 2 |
| AS15020US | AS-BANDITO - Bandito Networks, Inc | 512 | 3 | 5 |
| AS393668US | STATEFAIRCC - State Fair Community College | 512 | 32 | 19 |
| AS26533US | STIBARC-AS-01 - STiBaRC | 512 | 5 | 7 |
| AS62841US | CITY-OF-NEW-ORLEANS - City of New Orleans | 512 | — | 1 |
| AS36418US | HAP - HEALTH ALLIANCE PLAN OF MICHIGAN | 512 | — | 1 |
| AS400013US | WAUPACA-FOUNDRY-INC - Waupaca Foundry, Inc. | 512 | 5 | 7 |
| AS40056US | WGLV-20 - Westgate Resorts Ltd | 512 | — | 2 |
| AS54636US | AS-DBIO - Rackspace Hosting | 512 | — | 1 |
| AS55261US | DMISTL - DISTRIBUTION MANAGEMENT INC | 512 | — | 2 |
| AS22270US | BANGOR-SAVINGS-BANK - Bangor Savings Bank | 512 | — | 2 |