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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) | 227.7M | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,189 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 372 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,936 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,378 |
| 1.8K |
| — |
| 7 |
| AS205940US | PlusCreativo Plus Creativo LLC | 1.8K | — | 4 |
| AS17082US | SMART-CITY-MBCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 1.8K | — | 3 |
| AS30283US | MOFO - Morrison & Foerster | 1.8K | — | 7 |
| AS7334US | WALLSTREET - Markit On Demand, Inc. | 1.8K | — | 7 |
| AS395584US | PDC-BGP - Data Management | 1.8K | — | 4 |
| AS205157US | CIDNOC Daniel Cid | 1.8K | 5 | 12 |
| AS27401US | KLD-MN-US - KLDiscovery Ontrack, LLC | 1.8K | — | 7 |
| AS36678US | CTUSA - CHINA TELECOM (AMERICAS) CORPORATION | 1.8K | — | 6 |
| AS395176US | ENCORE-TECHNOLOGIES - Encore Technologies | 1.8K | 768 | 10 |
| AS53988US | DIGIDESERT - Digi Desert LLC | 1.8K | 16 | 5 |
| AS393753US | AS393753 - The Brooklyn Hospital Center | 1.8K | — | 3 |
| AS26002US | SU-NOC - Southern University | 1.8K | — | 7 |
| AS29729US | TELEFLORA-OKC - Teleflora LLC | 1.8K | — | 6 |
| AS32165US | BCBSMA - Blue Cross and Blue Shield of Massachusetts, Inc. | 1.8K | — | 7 |
| AS22474US | SAINT-LUKES-HEALTH-SYSTEM-AS - Saint Luke's Health System | 1.8K | — | 4 |
| AS22334US | FERGUSON - Ferguson Enterprises, LLC | 1.8K | — | 6 |
| AS395347US | GOBROLLYASN - Brolly Communications, Inc. | 1.8K | — | 4 |
| AS54037US | DCA-LN - DCA LLC | 1.8K | — | 5 |
| AS33565US | CONTIN-27 - Continental Grain Company | 1.8K | — | 5 |
| AS398830US | ICOMERA - Icomera US, Inc. | 1.8K | 1 | 8 |
| AS30418US | SUMT-CMH - SumTotal Systems, Inc. | 1.8K | — | 4 |
| AS3700US | CLOUD9 - Cloud 9 Internet, Inc. | 1.8K | 65.5K | 5 |
| AS30120US | SGNE-AS - Sempra Global | 1.8K | — | 5 |
| AS13656US | WORTHINGTONSTEEL - THE WORTHINGTON STEEL COMPANY | 1.8K | — | 7 |
| AS16871US | MCDONAGHBROTHERS - McDonagh Bros. Inc. | 1.8K | 1 | 7 |
| AS46998US | GLOBAL-NETSOLUTIONS - Global Netsolutions LLC | 1.8K | 256 | 8 |
| AS30150US | EXEGY - Exegy Incorporated | 1.8K | 65.5K | 11 |
| AS63001US | NTS-ALEXANDRIA-01 - Vexus Fiber | 1.8K | — | 3 |
| AS63031US | WEBBYENT - Webby Enterprises LLC | 1.8K | — | 3 |
| AS7332US | LIGHTBOUND-AS - LightBound, LLC | 1.8K | 65.5K | 8 |
| AS23088US | TBG - The Blackstone Group | 1.8K | — | 4 |
| AS53626US | CORUS360 - Corus360 | 1.8K | — | 4 |
| AS22900US | ITRON - ITRON INC. | 1.8K | — | 4 |
| AS54769US | ENSEVA - Enseva LLC. | 1.8K | — | 7 |
| AS397779US | CONCORD-HOSPITAL-ASN-01 - Concord Hospital | 1.8K | — | 4 |
| AS394144US | LTYCONNECT - LTY CONNECT | 1.8K | 131.1K | 8 |
| AS63287US | LUCERA - Lucera Financial Infrastructures, LLC | 1.8K | — | 6 |
| AS18485US | VTLA - NTT Global Networks Incorporated | 1.8K | — | 6 |
| AS32091US | TRACF-AS - Tracfone Wireless | 1.8K | — | 4 |
| AS395856US | 2KGAM-395856 - 2K GAMES, Inc. | 1.8K | — | 4 |
| AS395073US | UMMC - University of Mississippi Medical Center | 1.8K | — | 7 |
| AS10717US | SCHOLASTIC - Scholastic Inc. | 1.8K | — | 6 |
| AS36640US | SLASCONSULTING - SLAS Consulting, LLC | 1.8K | — | 3 |
| AS62632US | UNITI-ITS - Uniti Fiber Holdings Inc. | 1.8K | — | 3 |
| AS395415US | QT-SEC - Quiktrip Corporation | 1.8K | — | 6 |
| AS396243US | CONV-8 - Convergence Communications | 1.8K | — | 4 |