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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,220 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 | 51.5M | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS397110US | CLOUD-CONNECT-01 - ConocoPhillips Company | 256 | — | 1 |
| AS46716US | CROOK-COUNTY-OREGON - Crook County Oregon | 256 | — | 1 |
| AS40896US | CLOUDIGITAL - ClouDigital, LLC | 256 | 11 | 12 |
| AS393743US | ADVANCED-ICU-CARE - Advanced ICU Care, Inc. | 256 | — | 1 |
| AS393469US | LANERMC - Lane Regional Medical Center | 256 | — | 1 |
| AS27394US | NHDSC-ORG - Northern Hospital District of Surry County | 256 | — | 1 |
| AS401832US | RULE YOUR OWN GAME INC - Rule Your Own Game Inc. | 256 | 2 | 3 |
| AS63279US | XKEY - XKEY | 256 | 354 | 10 |
| AS53918US | HHRL-ASN - Host Hotels and Resorts, L.P. | 256 | — | 1 |
| AS19840US | OAKTREECAP - Oaktree Capital Management, LP | 256 | — | 1 |
| AS363US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS33280US | AS-AFILIAS-MIA2 - Afilias, Inc. | 256 | 1 | 2 |
| AS40208US | GLHOMES - G.L. Homes of Florida Corporation | 256 | — | 1 |
| AS396896US | FERRARA-CANDY-CO - Ferrara Candy Company | 256 | — | 1 |
| AS1083US | AGK-CONSULTING-INC - AGK Consulting, Inc. | 256 | — | 1 |
| AS399900US | ARDHAM - ARDHAM TECHNOLOGIES, INC. | 256 | — | 1 |
| AS54308US | RETOUCHUP - RETOUCHUP.COM | 256 | — | 1 |
| AS18944US | HEAP - AS18944 LLC | 256 | 1 | 2 |
| AS400364US | DSLD-NET01 - DSLD HOMES, LLC | 256 | — | 1 |
| AS400903US | IND-COLO-01 - Genesys Cloud | 256 | 1 | 2 |
| AS55240US | UNIFOCUS - UniFocus LP | 256 | — | 1 |
| AS19983US | GTPL-AS-01 - Global Technology Partners LLC | 256 | — | 1 |
| AS13844US | SJRH - St. John's Riverside Hospital | 256 | — | 1 |
| AS54731US | ASSOCIA-ASN - Associa | 256 | — | 1 |
| AS46594US | BIS-CORP - Business Information Systems, Inc. | 256 | — | 1 |
| AS21963US | AS-AGENCYINSURANCEMD-0001 - Agency Insurance Company | 256 | — | 1 |
| AS46451US | NORTHERN-LIGHT-HEALTH - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS401668US | ROGERSNETWORKS - IPM Computers LLC | 256 | — | 1 |
| AS397619US | CURTIS - Curtis, Mallet-Prevost, Colt & Mosle, LLP | 256 | — | 1 |
| AS53799US | NAHB1201 - NAHB | 256 | — | 1 |
| AS20168US | AM-US-AMER-PRECOR-PRECO-11 - Precor Incorporated | 256 | — | 1 |
| AS402853US | CONTENT-CRITICAL-SOLUTIONS - Content | 256 | — | 1 |
| AS19173US | TEXAS-EXCHANGE-BANK - Texas Exchange Bank | 256 | — | 1 |
| AS393695US | CRC-AS - Cooperative Response Center | 256 | — | 1 |
| AS13615US | HVHS-AS - Heritage Valley Health System | 256 | — | 1 |
| AS27566US | EQUINIX-EC-NY - Equinix, Inc. | 256 | 1 | 2 |
| AS397795US | THEFIREHORN-NET - The Fire Horn, Inc. | 256 | 2 | 3 |
| AS17092US | HHS-IPASN - Hendrick Medical Center | 256 | — | 1 |
| AS63008US | SIMPLE-ASN - SIMPLE CLOUD SOLUTION LLC | 256 | 2 | 3 |
| AS5761US | MICROSOFT-CORP-MSN-AS-SATURN - Microsoft Corporation | 256 | 1 | 2 |
| AS36117US | RAYMO-18 - Raymour & Flanigan Furniture | 256 | — | 1 |
| AS399051US | ALLSTATE-SECURITY-INDUSTRIES-INC - ALLSTATE SECURITY INDUSTRIES, INC. | 256 | — | 1 |
| AS397789US | SELCO-ASN-01 - SELCO Community Credit Union | 256 | — | 1 |
| AS397542US | ACCDPEC - Austin Convention Center Department | 256 | — | 1 |
| AS30183US | HRCAC-1 - Hard Rock Hotel and Casino Atlantic City | 256 | — | 1 |
| AS398331US | 1FBUSA-PROD - 1st Financial Bank USA | 256 | — | 1 |