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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,160 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| 16 |
| 2 |
| AS400488US | IZONE-BB-01 - iZone Broadband LLC. | 256 | 65.5K | 2 |
| AS14441US | NETWORK-SOLUTIONS-14441 - Network Solutions, LLC | 256 | — | 1 |
| AS32680US | CHNCTORG - Community Health Network of Connecticut | 256 | — | 1 |
| AS36613US | TRADER1-CHICAGO - York Business Associates, LLC | 256 | — | 1 |
| AS394274US | PHMC-AS1 - Public Health Management Corporation | 256 | — | 1 |
| AS397287US | AUTOCRIB-53 - AutoCrib, Inc. | 256 | — | 1 |
| AS46429US | TPL-SOUTH - Tranquil Properties LLC | 256 | 32 | 3 |
| AS54015US | CHI-INT-PROD-MKT-NET - Chicago International Produce Market Condominium association | 256 | — | 1 |
| AS29875US | CPLSW-AS - Clinical Pathology Laboratories | 256 | — | 1 |
| AS22536US | TELERENT - Telerent Leasing Corporation | 256 | — | 1 |
| AS36607US | ACM - Association for Computing Machinery, Inc | 256 | — | 1 |
| AS394518US | CHSD230 - Consolidated High School District 230 | 256 | — | 1 |
| AS54920US | PHAEDON - Phaedon Acquisition, Inc. | 256 | — | 1 |
| AS32355US | HBP-AS - Horsley Bridge Partners, LLC | 256 | — | 1 |
| AS31757US | ASN-VALLEYCREST - ValleyCrest Companies | 256 | — | 1 |
| AS400994US | OSSD-AS - Oneida Special School District | 256 | — | 1 |
| AS40397US | FIRST-MANHATTAN - First Manhattan Co. | 256 | — | 1 |
| AS397097US | IMA-MODERN-AS - Infrastructure Management Associates, Inc. | 256 | 4.1K | 2 |
| AS20166US | 1FBUSA-1 - 1st Financial Bank USA | 256 | — | 1 |
| AS53789US | LEBANON-OR - City of Lebanon | 256 | — | 1 |
| AS23331US | EQT - Equitable Resources | 256 | — | 1 |
| AS1073US | SCLSA-ASN-01 - South Carolina Legislative Services Agency | 256 | — | 1 |
| AS401530US | RETAILSOLUTIONS-ASN-01 - Retail Solutions, LLC | 256 | — | 1 |
| AS36500US | REDI-US - Refinitiv US LLC | 256 | — | 1 |
| AS399529US | KIRKLAND-ELLIS-AU - Kirkland & Ellis LLP | 256 | — | 1 |
| AS27574US | NTMWD-NORTH-TEXAS-MUNICIPAL-WATER-DISTRICT - North Texas Municipal Water District | 256 | — | 1 |
| AS398201US | GRAHAM-HEALTH-SYSTEM-IL - Graham Health System | 256 | — | 1 |
| AS16665US | JIBEI-FLUSHING - Joint Industry Board of the Electrical Industry | 256 | — | 1 |
| AS21607US | LAZERWARE-INC - LAZERWARE INC | 256 | — | 1 |
| AS30563US | STRATACOM-GA-1 - Stratacom Communications, Inc. | 256 | — | 1 |
| AS22209US | RUDYS-AS - RUDYS INFLIGHT CATERING | 256 | — | 1 |
| AS395117US | LIMS - LabVantage Solutions, Inc | 256 | — | 1 |
| AS393688US | INSULET600TECH - Insulet Corporation | 256 | — | 1 |
| AS398746US | HARRIS-AS-01 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS397043US | AS-CHELCO - CHELCO | 256 | — | 1 |
| AS396489US | PPGNHI - PLANNED PARENTHOOD GREAT NORTHWEST, HAWAI'I, ALASKA, INDIANA, AND KENTUCKY | 256 | — | 1 |
| AS33192US | NAIB - National Aquarium in Baltimore | 256 | — | 1 |
| AS26645US | ODECASN - Old Dominion Electric Cooperative | 256 | — | 1 |
| AS26213US | DMSMAIN - Dealer Marketing Services | 256 | — | 1 |
| AS394420US | SPOKANE-911 - SREC | 256 | — | 1 |
| AS398978US | TRINET1 - Trinity Communications LLC | 256 | — | 1 |
| AS26993US | STANDARDASN - STANDARD TEXTILE CO., INC. | 256 | — | 1 |
| AS27172US | 3COM-NET-ROUTER-AS27172 - 3Com Net Router | 256 | 266 | 12 |
| AS394602US | ILLINOISCOLLEGE - Illinois College | 256 | — | 1 |
| AS396233US | TELEMATE-ATL - TeleMate.Net Software, LLC | 256 | 1 | 2 |
| AS395269US | WAHL-CLIPPER - Wahl Clipper | 256 | — | 1 |