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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 |
| 65.5K |
| 2 |
| AS26475US | FLAGLER - Flagler College | 256 | — | 1 |
| AS394048US | GSE-LINK-01 - Global Satellite Engineering, Inc | 256 | 4.1K | 2 |
| AS11916US | UNDP - UNDP | 256 | — | 1 |
| AS30646US | BBNA-AS1 - BlueScope Buildings North America, Inc. | 256 | — | 1 |
| AS23057US | DART-IP-ASN - DART TRANSIT COMPANY | 256 | — | 1 |
| AS40037US | LSR-LLP - Labaton Sucharow LLP | 256 | — | 1 |
| AS22810US | BROOKS-AUTOMATION - Brooks Automation Inc. | 256 | — | 1 |
| AS46834US | ACLAB - Ascend Clinical, LLC | 256 | — | 1 |
| AS1430US | BB0-BOSTON - Board of Bar Overseers | 256 | — | 1 |
| AS398365US | NHAEXTNET - Neil Hoosier & Associates, Inc. | 256 | — | 1 |
| AS400735US | SMARTGRID-AS400735 - Smart Grid, LLC | 256 | — | 1 |
| AS398064US | MDUSOLUTIONS-ASN-01 - MDU Solutions, LLC | 256 | — | 1 |
| AS42651US | GAB Gab Ai Inc | 256 | — | 1 |
| AS22524US | SSH-SPBG - Spartanburg Steel Holdings, Inc | 256 | — | 1 |
| AS18743US | EVERENCE-SERVICES-LLC - MENNONITE MUTUAL AID | 256 | — | 1 |
| AS400467US | IRONBOWLAB-ASN - Iron Bow Technologies, LLC | 256 | — | 1 |
| AS40522US | SIMPLE1 - Simple Signal, Inc. | 256 | — | 1 |
| AS26660US | CLAYCO - Clayco, Inc. | 256 | — | 1 |
| AS393220US | ARIN-PFS-SJC - ARIN Operations | 256 | 1 | 2 |
| AS398484US | CLARKEUNIVERSITY-BGP - Clarke University | 256 | — | 1 |
| AS53473US | BLOCKDC - Kinetic Web Solutions | 256 | — | 1 |
| AS10419US | GBUS-ASN - Globius Systems, LLC | 256 | 16 | 2 |
| AS46771US | AVI-HQ - AVI FOODSYSTEMS, INC. | 256 | 256 | 2 |
| AS401265US | LWR-338 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS40159US | PRINCETON-REGIONAL-SCHOOLS - Princeton Public Schools | 256 | — | 1 |
| AS401997US | ANC-187-AS - Arkansas Northeastern College | 256 | — | 1 |
| AS398874US | LOSTCREEKTECHASN-01 - Lost Creek Technology L.L.C. | 256 | 4.1K | 2 |
| AS401786US | FRACCTAL - Fracctal, Inc. | 256 | 1 | 2 |
| AS63194US | CRASH - Crashlytics, Inc | 256 | — | 1 |
| AS10US | CSNET-EXT-AS - CSNET Coordination and Information Center (CSNET-CIC) | 256 | — | 1 |
| AS396957US | NDBH-ASNUMBER - New Directions Behavioral Health, LLC | 256 | — | 1 |
| AS46122US | DBCONTROLS - Digital Business Controls | 256 | — | 1 |
| AS40105US | PRV-GAF-US-SE - PriVerify Corp. | 256 | — | 1 |
| AS398544US | SIMPLICITYTECH-NET01 - Simplicity Tech | 256 | — | 1 |
| AS27261US | STOF-GAMING-HOLLYWOOD - Seminole Gaming | 256 | — | 1 |
| AS22551US | MOA-192-206-58-0 - Municipality of Anchorage | 256 | — | 1 |
| AS398984US | ENTWINDER - Entwinder Networks | 256 | — | 1 |
| AS401548US | HCDL-OMAHA-DATA-CENTER - H5 Data Centers | 256 | 256 | 2 |
| AS36634US | GREATRIVERHEALTHSYSTEMS - Great River Health Systems, Inc. | 256 | — | 1 |
| AS54405US | MGALE-1 - Martingale Asset Management Limited Partnership | 256 | — | 1 |
| AS64239US | KYANAIND-COM - Kyana Packaging & Industrial Supply, Inc | 256 | — | 1 |
| AS14816US | HKUASN - Metabo HPT | 256 | — | 1 |
| AS397141US | VIS-LLC-SC - VIS LLC | 256 | — | 1 |
| AS396159US | PUD3-WA - PUD3 | 256 | — | 1 |
| AS27187US | INDIANA-RMC - Indiana Regional Medical Center | 256 | — | 1 |
| AS402515US | PROTOTYPAL - Prototypal, | 256 | 256 | 2 |