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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 | 24,389 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,302 |
| 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.
32,169 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| BROCKTONHOSPITAL-ORG - Brockton Hospital |
| 1K |
| — |
| 4 |
| AS16760US | CBOE - Cboe | 1K | — | 4 |
| AS401405US | CRUSOE-ASN-02 - CRUSOE ENERGY SYSTEMS LLC | 1K | — | 3 |
| AS55215US | TRINITY-HEALTH - Trinity Health | 1K | — | 3 |
| AS39992US | FDC-CTS-HOLDINGS - Fiserv Solutions, LLC | 1K | — | 2 |
| AS26538US | SINGLE-DIGITS - Single Digits, Inc. | 1K | — | 4 |
| AS25799US | M247AI-AS-US - 24/7.ai, Inc | 1K | — | 4 |
| AS40013US | CARDINAL-LOGISTICS-MANAGEMENT-CORPORATION - Cardinal Logistics Management Corporation | 1K | — | 1 |
| AS54384US | CORE-ASN - CORE Electric Cooperative | 1K | — | 3 |
| AS15188US | K12ITC - Menlo, Inc. | 1K | — | 4 |
| AS13491US | FSBA - Florida State Board of Administration | 1K | — | 3 |
| AS398255US | GTS-AS-02 - GTS Securities, LLC | 1K | — | 3 |
| AS54271US | MECHANICS - Mechanics Bank | 1K | — | 3 |
| AS62914US | MFI-ASN - Mattress Firm, Inc. | 1K | — | 4 |
| AS33621US | CWL-30-IT-ASN - COMMNET WIRELESS LLC | 1K | — | 3 |
| AS40552US | FBMC-HQ - Fringe Benefits Management Company | 1K | — | 1 |
| AS21613US | QUINAULT-INDIAN-NATION - Quinault Indian Nation | 1K | — | 1 |
| AS19934US | UBER-FREIGHT - Uber Freight US LLC | 1K | — | 4 |
| AS14465US | HITN-AS-1 - HITN | 1K | — | 1 |
| AS396966US | CESL-21-ASN-396966 - Claro Enterprise Solutions, LLC | 1K | 8 | 12 |
| AS40939US | P2PPSR - Project Babbage | 1K | 256 | 4 |
| AS17406US | PSCU-NET1 - PSCU INCORPORATED | 1K | — | 4 |
| AS62584US | PLATINUM-DC - Platinum Data Centers, Inc. | 1K | — | 1 |
| AS54313US | TELCENTREX - Telcentrex LLC | 1K | — | 4 |
| AS40031US | SATCOM-SYSTEMS-ASN - Satcom Systems Incorporated | 1K | — | 1 |
| AS20306US | ADELPHI - Adelphi University | 1K | 5 | 6 |
| AS394012US | WGR-AS - Westgate Resorts Ltd | 1K | — | 4 |
| AS33010US | INTERCHURCH - The Interchurch Center | 1K | — | 1 |
| AS394393US | UKIAHWIRELESS - Wi-Fiber, Inc. | 1K | — | 1 |
| AS63313US | IEP-AS - NameCentral, Inc. | 1K | 65.5K | 2 |
| AS46917US | PRAGMA-FS-01 - Pragma Financial Systems | 1K | — | 4 |
| AS393283US | UNIVAR SOLUTIONS - Univar Solutions LLC | 1K | — | 4 |
| AS40507US | VIRTUALIZED - GameServerSupply, LLC | 1K | 2 | 6 |
| AS20035US | AS-BBI - Broadway National Bank | 1K | — | 4 |
| AS53676US | EMERALD - Emerald Publications | 1K | — | 2 |
| AS396120US | DONUTSHIELD - DonutSMP | 1K | — | 3 |
| AS6596US | ASN-BUNGI - Bungi Communications | 1K | 65.5K | 5 |
| AS400446US | CITIZENSBANK - The Citizens Bank | 1K | 4.1K | 4 |
| AS39998US | WEBSERVIO-COLO-KNOXVILLE - Webservio, Inc. | 1K | — | 4 |
| AS33186US | DAVITTACLINK - DaVita HealthCare Partners Inc. | 1K | 1 | 5 |
| AS27386US | PSEGLI - PSEG Long Island LLC | 1K | — | 4 |
| AS17150US | AFCU - America First Credit Union | 1K | — | 4 |
| AS63185US | IQVIA-ATLANTA - IQVIA Holdings Inc | 1K | — | 4 |
| AS27562US | RHC-INT - Presence Health Network | 1K | — | 4 |
| AS36842US | NORTHGATEARINSO-INC - NorthgateArinso, LLC | 1K | — | 2 |
| AS396037US | SOLSTICE-AM - Honeywell International Inc. | 1K | — | 4 |
| AS40558US | AS-WPI - WorldPoint Communications, Inc. | 1K | — | 3 |