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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 |
| AS401987US | SAMARITAN HEALTHCARE-ASN - Samaritan Healthcare | 256 | — | 1 |
| AS23386US | CRYE-LEIKE-REALTORS - Crye Leike Realtors | 256 | — | 1 |
| AS393281US | HB2000 - City of Huntington Beach | 256 | — | 1 |
| AS32113US | AS-LEFRAK - The Lefrak Organization, Inc. | 256 | — | 1 |
| AS399263US | RISE-CONNECT-01 - Rise Commercial District | 256 | — | 1 |
| AS22061US | CLOUDFLARE-MTC-CA - Cloudflare, | 256 | 1 | 2 |
| AS396175US | PSC - PEGASUS SOLUTIONS COMPANIES | 256 | — | 1 |
| AS53802US | 382-COM - 382 Communications Corporation | 256 | — | 1 |
| AS11132US | ASMSA-AS - ARKANSAS SCHOOL FOR MATHEMATICS, SCIENCES & THE ARTS | 256 | — | 1 |
| AS26143US | PROSITES-WC1 - ProSites, Inc. | 256 | — | 1 |
| AS398131US | LUCASFILM-LA - Lucasfilm Ltd. LLC | 256 | — | 1 |
| AS14341US | WEBSOCLE-ASN - WebSocle | 256 | 256 | 2 |
| AS46398US | PII - Taylor Corporation | 256 | — | 1 |
| AS399721US | AS-MS-78065 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS25750US | AS25750 - Southwestern Vermont Health Care Corporation | 256 | — | 1 |
| AS25863US | HUNTERENG - Hunter Engineering Company | 256 | — | 1 |
| AS46305US | UA-4585 - Universal Audio, Inc. | 256 | — | 1 |
| AS205712US | WEB-TRACTORINFOR Tractorinfor LLC | 256 | 4.1K | 2 |
| AS26533US | STIBARC-AS-01 - STiBaRC | 256 | 5 | 6 |
| AS398399US | ASANA-IT-01 - Asana, Inc. | 256 | 1 | 2 |
| AS23538US | JOHNSON-COUNTY-ASN - Johnson County Iowa | 256 | — | 1 |
| AS14216US | ISHIP - IShip.com | 256 | — | 1 |
| AS53725US | PBF-ASN - PBF Holding Company LLC | 256 | — | 1 |
| AS25622US | TSYS-SDC-CONTACT-CENTER-WFH - Global Payments Inc. | 256 | — | 1 |
| AS21752US | ACPHLA - Albany County Pine Hills Land Authority | 256 | 256 | 2 |
| AS26009US | CALIFORNIA-CREDIT-UNION - California Credit Union | 256 | — | 1 |
| AS25857US | ACS-ASN - American Chemical Society | 256 | — | 1 |
| AS20242US | GCO-HQ - GENESCO INC | 256 | — | 1 |
| AS138938US | NTC-AS-INPE - NORTHERN TRUST CORPORATION | 256 | — | 1 |
| AS36397US | PALMETTO-CITIZENS-FCU - Palmetto Citizens Federal Credit Union | 256 | — | 1 |
| AS399242US | CODINGFLYBOY-LLC - CodingFlyBoy LLC | 256 | 1 | 2 |
| AS394246US | VALOR-COMMUNICATION-INC-INDUSTRY - VALOR COMMUNICATION, INC. | 256 | — | 1 |
| AS55252US | ACTIVE-ASN-2013 - Active International | 256 | — | 1 |
| AS53478US | ADS - ADS | 256 | — | 1 |
| AS1098US | SNAPONE-LEHI-01 - Snap One, LLC. | 256 | — | 1 |
| AS394767US | GROUPONE-SC1 - Group One Consulting, Inc. | 256 | — | 1 |
| AS18524US | SAM-MEMPHIS - SOUTHEASTERN ASSET MANAGEMENT, INC. | 256 | — | 1 |
| AS14478US | RECURSE-CENTER - Recurse Center | 256 | 2 | 3 |
| AS46919US | QRM - Quantitative Risk Management, Incorporated | 256 | — | 1 |
| AS394112US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | — | 1 |
| AS398146US | EMYPEOPLE - eMyPeople LLC | 256 | — | 1 |
| AS398045US | HULA-00 - Hula LLC | 256 | 4.1K | 2 |
| AS401010US | BLUEGRASSBB - Bluegrass Broadband, LLC | 256 | — | 1 |
| AS11048US | DIGITALSTAKEOUT - DigitalStakeout | 256 | 1 | 2 |
| AS11605US | FLUIDSOFT-14 - Fluidsoft Incorporated | 256 | — | 1 |
| AS394460US | STPNOC - STP Nuclear Operating Company | 256 | — | 1 |