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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. | 218.2M | 25,924 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,306 |
| 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.
32,232 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,897 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,005 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 2 |
| AS54787US | MYRIAD-SSF-01 - Myriad Genetics, Inc. | 512 | — | 2 |
| AS393846US | ROUTER12-NETWORKS-UN - Router12 Networks LLC | 512 | — | 2 |
| AS394632US | CMC - Catholic Medical Center | 512 | — | 1 |
| AS27604US | SETONHILLUNIVERSITY - Seton Hill University | 512 | — | 1 |
| AS36462US | TGNA-KHOU - TEGNA Inc. | 512 | — | 2 |
| AS40618US | SESAME - Sesame Workshop | 512 | — | 2 |
| AS400530US | DCS-01 - Dubuque Community Schools | 512 | — | 2 |
| AS27533US | OMGEO - Depository Trust & Clearing Corporation | 512 | — | 2 |
| AS26940US | LEVI-STRAUSS-CO - Levi Strauss & Co. | 512 | — | 2 |
| AS20143US | SUNET-1 - Suffolk University | 512 | — | 2 |
| AS397440US | TAVANT-SC9-DATACENTER - Tavant Technologies, Inc. | 512 | — | 2 |
| AS16856US | BLESSING-HEALTH-SYSTEM-AS - Blessing Hospital | 512 | — | 2 |
| AS394275US | PARALLELS - Parallels Inc | 512 | — | 1 |
| AS36667US | PHIBRO-ANIMAL-HEALTH-CORPORATION-ARIN - Phibro Animal Health Corporation | 512 | 18 | 5 |
| AS26699US | MUHLENBERG-COLLEGE - Muhlenberg College | 512 | — | 2 |
| AS18583US | HATTERASCPC - Hatteras CPC | 512 | — | 2 |
| AS398985US | CITY-OF-ARVADA - City of Arvada | 512 | — | 2 |
| AS46802US | GLADIATOR-TECH - Gladiator Technologies, LLC | 512 | — | 2 |
| AS19768US | SCAN - SCAN Health Plan | 512 | — | 2 |
| AS399947US | AURORA-GEO - Pacific Dataport Inc. | 512 | — | 1 |
| AS393534US | FHLBM-AS - Federal Home Loan Bank of Des Moines | 512 | — | 2 |
| AS21974US | FMIC - Frankenmuth Mutual Insurance Company | 512 | — | 2 |
| AS16999US | WFSCORP - World Fuel Services Corporation | 512 | — | 2 |
| AS397827US | ALLEGACY - ALLEGACY FEDERAL CREDIT UNION | 512 | — | 2 |
| AS50937US | INFINITIUM-AS INFINITIUM CORPORATION | 512 | 1 | 3 |
| AS11640US | GROUP-ONE-TRADING - Group One Trading LLC | 512 | — | 2 |
| AS53575US | AUSTIN-COLLEGE - Austin College | 512 | — | 2 |
| AS400313US | APOG-UNA - Apogee Telecom Inc. | 512 | — | 1 |
| AS17124US | SOUTHARK - SouthArk | 512 | — | 2 |
| AS14635US | VERMONT-STUDENT-ASSISTANCE-CORPORATION - Vermont Student Assistance Corporation | 512 | — | 2 |
| AS26208US | COUNTY-OF-ESSEX-NJ - County of Essex NJ | 512 | — | 2 |
| AS40067US | NEWEGG - Newegg Inc. | 512 | — | 2 |
| AS13888US | BEARCREEK-AS - Bear Creek Operations Inc | 512 | — | 2 |
| AS30489US | MKPCAP - MKP Capital Management, LLC | 512 | — | 2 |
| AS25711US | VMC-PELLA-AS - Vermeer Manufacturing Company | 512 | — | 2 |
| AS397979US | AIRMAX-1 - Airmax | 512 | — | 2 |
| AS399929US | MAA-ASN-01 - Mid-America Apartments, L.P. | 512 | — | 2 |
| AS36575US | WCVB-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS40347US | EAUCLAIRE-COUNTY - Eau Claire County | 512 | — | 1 |
| AS33496US | ISC - ISC CONSTRUCTORS, LLC | 512 | 1 | 3 |
| AS25836US | STERLING-JEWELERS - Sterling Jewelers Inc. | 512 | — | 2 |
| AS54364US | RR - Rosen Research LLC | 512 | 16 | 3 |
| AS64255US | EM-888 - Intercontinental Exchange, Inc. | 512 | — | 2 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS53560US | ENDO - Endo Pharmaceuticals Inc | 512 | — | 2 |
| AS394302US | IAD-COLO - Qualcomm, Inc. | 512 | 2 | 3 |