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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| 4.1K |
| 2 |
| AS399133US | VANTAGE-POINT-SOLUTIONS - VPS Solutions, LLC | 256 | 256 | 2 |
| AS40019US | SENDLANE - Sendlane | 256 | — | 1 |
| AS400116US | COLDIST-DAT1 - COLUMBIA DISTRIBUTING | 256 | — | 1 |
| AS55063US | COF-BUSINESS - City of Fairfax | 256 | — | 1 |
| AS32305US | COOK-GROUP - COOK GROUP INC | 256 | — | 1 |
| AS393399US | SNL-KTF - Sandia National Laboratories | 256 | — | 1 |
| AS19770US | PHOENIXCONTACTSERVICES-US - Phoenix Contact Services, Inc. | 256 | 1 | 2 |
| AS55114US | IDEATIVES - Ideatives Inc | 256 | — | 1 |
| AS53643US | MCUSDN-INET - Manteno Community Unit School District 5 | 256 | — | 1 |
| AS27261US | STOF-GAMING-HOLLYWOOD - Seminole Gaming | 256 | — | 1 |
| AS26916US | TCW-AS-NY - The TCW Group, Inc. | 256 | — | 1 |
| AS46331US | KUKATOLEDO - KUKA Toledo Production Operations LLC | 256 | — | 1 |
| AS397817US | STMC - Southern Tennessee Regional Health System Winchester | 256 | — | 1 |
| AS19660US | KQED-ORG-02 - KQED Inc. | 256 | — | 1 |
| AS399684US | OVA-SUMMIT - SL Green Realty Corp | 256 | — | 1 |
| AS53777US | FWPARKER - Francis W. Parker School | 256 | — | 1 |
| AS36690US | RSYSTEMS-EDH - R Systems Inc. | 256 | — | 1 |
| AS53613US | VIA-METRO-01 - VIA Metropolitan Transit | 256 | — | 1 |
| AS396885US | HEART-ASN - Heart Technologies, Inc. | 256 | — | 1 |
| AS39956US | CCPASN - Community Care Physicians, P.C. | 256 | — | 1 |
| AS19851US | DOYLESTOWN-HOSPITAL - Doylestown Hospital | 256 | — | 1 |
| AS11988US | CEVA-US-MV - CEVA INC. | 256 | — | 1 |
| AS394313US | NERDNET-10 - Nerd LLC | 256 | — | 1 |
| AS40129US | FREEDOMHEALTH - Sentry Data Systems, Inc. | 256 | — | 1 |
| AS46146US | BECKLAR-AS-1 - Becklar Holdings, LLC | 256 | — | 1 |
| AS399681US | SARNOVA-DC-ASN01 - SARNOVA, INC. | 256 | — | 1 |
| AS402542US | CLOUDFLARENET - Cloudflare, | 256 | 1 | 2 |
| AS22274US | SMP-VIR - Standard Motor Products, Inc | 256 | — | 1 |
| AS62652US | AU-65-BGP - Anderson University | 256 | — | 1 |
| AS395596US | INFINIRC-LLC - Infinirc LLC | 256 | 256 | 2 |
| AS395599US | ALDR2016 - Alder | 256 | — | 1 |
| AS393384US | US-KONTIKI-2 - Kollective Technology, Inc. | 256 | — | 1 |
| AS400369US | TALLEYINC - Talley Inc. | 256 | — | 1 |
| AS22137US | BCW - Blood Center of Wisconsin, Inc. | 256 | — | 1 |
| AS399443US | NIELSEN-MEDIA - THE NIELSEN COMPANY (US), LLC | 256 | — | 1 |
| AS40215US | CONTRANCORP-DAL - Contran Corporation | 256 | — | 1 |
| AS209697US | PARKERBROADBAND Parker Broadband LLC | 256 | — | 1 |
| AS32683US | WAREHOUSE-DIRECT-OFFICE-PRODUCTS - Warehouse Direct Office Products | 256 | — | 1 |
| AS393426US | HALP - Harris Associates L.P. | 256 | — | 1 |
| AS393783US | SEIBELS - Seibels Technology Solutions, Inc. | 256 | — | 1 |
| AS62896US | MIDCO-NET-INV-MR - Midcontinent Communications | 256 | 48 | 4 |
| AS32754US | SUNPHARMA-01 - Sun Pharmaceutical Industries Inc. | 256 | — | 1 |
| AS400422US | MODERNTREASURY - Modern Treasury Corp. | 256 | 1 | 2 |
| AS396945US | MIDWESTLABS - Midwest Laboratories | 256 | — | 1 |
| AS398797US | NUBESEC - Nubesec LLC | 256 | — | 1 |
| AS22664US | KIWI-TECHONOLOGY-NETWORK - Kiwi Technology Consulting LLC | 256 | — | 1 |