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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 | 24,346 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 4,357 |
| 512 |
| — |
| 2 |
| AS208757US | RelInfoAS RelINFO Solutions LLC | 512 | — | 1 |
| AS32630US | PCI-DB - Patterson Companies, Inc. | 512 | — | 2 |
| AS393534US | FHLBM-AS - Federal Home Loan Bank of Des Moines | 512 | — | 2 |
| AS17321US | LHC-GROUP - LHC Group | 512 | — | 2 |
| AS19732US | TGNA-WTSP - TEGNA Inc. | 512 | — | 2 |
| AS54620US | GNSGLOBAL - Generic Network Systems, LLC | 512 | — | 2 |
| AS29864US | SPORTSMANS-WAREHOUSE - Sportsman's Warehouse, Inc. | 512 | — | 2 |
| AS40106US | OGIL-NA-SF - The Ogilvy Group, LLC | 512 | — | 2 |
| AS26970US | DV-TRADING-LLC - DV TRADING, LLC | 512 | — | 2 |
| AS26717US | AS-RPS - Richmond Public Schools | 512 | — | 1 |
| AS33529US | PWC-136-33529 - PAC Worldwide Corporation | 512 | — | 2 |
| AS15228US | OREILLYMEDIA-AS1 - O'Reilly Media, Inc. | 512 | — | 1 |
| AS14257US | EZ-NET - The Iserv Company, LLC | 512 | — | 2 |
| AS46361US | GILLETTE-CHILDRENS-SPECIALTY-HEALTHCARE - Gillette Children's Specialty Healthcare | 512 | — | 2 |
| AS400554US | STRICITY - Stricity LLC | 512 | 256 | 3 |
| AS46084US | ASRCFH-NET - ASRC FEDERAL HOLDING COMPANY, LLC | 512 | — | 2 |
| AS398098US | LA-COLL-INET - City National Bank | 512 | — | 2 |
| AS399658US | CH3 - Guaranteed Rate Inc | 512 | — | 2 |
| AS33419US | TRIBAL-FUSION - Exponential Interactive, Inc. | 512 | — | 2 |
| AS40350US | KEYCOOP - Key Cooperative | 512 | — | 2 |
| AS55132US | SAJAH - Beverly Hills Hotel | 512 | — | 2 |
| AS54525US | AGT01 - APPLIED GLOBAL TECHNOLOGIES, LLC | 512 | — | 1 |
| AS14945US | FMC-401NEWING-LOH - FAIRFIELD MEDICAL CENTER | 512 | — | 2 |
| AS54906US | BENCODENTAL - Benco Dental Company | 512 | — | 2 |
| AS399417US | VORTEXOKMAIN - VortexOK.net LLC | 512 | 65.5K | 3 |
| AS400042US | CRC-RITA-01 - Campus Research Corporation | 512 | 4.1K | 3 |
| AS27479US | LNSP - Lake Norman Security Patrol, Inc. | 512 | — | 2 |
| AS11902US | WORLD-LINK - World-Link Communications, Inc. | 512 | — | 2 |
| AS395698US | BCBSKS - Blue Cross Blue Shield of Kansas, Inc. | 512 | — | 2 |
| AS18583US | HATTERASCPC - Hatteras CPC | 512 | — | 2 |
| AS396276US | CAGE-CUBE-518 - Cage Cube Technologies, Inc. | 512 | — | 2 |
| AS395037US | ASSFG01 - Sammons Financial Group, Inc. | 512 | — | 2 |
| AS19357US | NESL - New Enterprise Stone & Lime Company | 512 | — | 2 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS215367US | LIXER LENIN JABIB RAMIREZ | 512 | 1 | 3 |
| AS398381US | DC-ASN - Dallas, County Of | 512 | — | 2 |
| AS396085US | SUPERIOR-LIVESTOCK-AUCTION - Superior Livestock Auction, LLC | 512 | — | 2 |
| AS23463US | LONEPINECAPITAL - Lone Pine Capital LLC | 512 | — | 2 |
| AS395725US | USACS-1001 - USACS | 512 | — | 2 |
| AS22537US | ALBEMARLE-CORP - Albemarle Corp | 512 | — | 2 |
| AS399524US | SOUNDLINE-01 - SoundLine Communications | 512 | — | 2 |
| AS23356US | LAFC - Los Angeles Football Club | 512 | — | 2 |
| AS215129US | WPL-133-215129 - Wodarek Productions LLC | 512 | 4.1K | 4 |
| AS26705US | WBNET-01 - Whatabrands LLC | 512 | — | 2 |
| AS46519US | LMI - Lantheus Medical Imaging, Inc. | 512 | — | 2 |
| AS97US | NTTA-97 - NTT America, Inc. | 512 | — | 2 |