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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 1K |
| — |
| 1 |
| AS29832US | METTLER-TOLEDO-AM-NOC-ASN - Mettler-Toledo LLC | 1K | — | 1 |
| AS11212US | COUNTY-OF-SONOMA - COUNTY OF SONOMA | 1K | — | 3 |
| AS30609US | LCPUD - Lewis County PUD | 1K | 65.5K | 2 |
| AS33467US | SJRMC-NJ - St. Joseph's Medical Center | 1K | — | 1 |
| AS14722US | OPUS-INTERACTIVE-TX1 - Opus Interactive | 1K | 4.1K | 2 |
| AS402898US | PPFLIGHT - ppflight | 1K | 256 | 3 |
| AS4445US | CWI-AS - Vodafone Americas | 1K | — | 4 |
| AS401999US | PUBLIC-SAFETY-NET-EXCG - Fairfax County NCR | 1K | — | 4 |
| AS33277US | ASN33277 - Cu Cooperative Systems, Inc. | 1K | — | 4 |
| AS32464US | UICOMP-AS - University Of Illinois College Of Medicine At Peoria | 1K | — | 1 |
| AS26959US | TRIZETTO-AS - Cognizant Trizetto Software Group, INC. | 1K | — | 4 |
| AS202US | CENTURYLINK-LEGACY-LVLT-202 - Level 3 Parent, LLC | 1K | — | 1 |
| AS33607US | WSC-PHILADELPHIA-PA - Weidenhammer | 1K | — | 3 |
| AS401299US | SIPNAV-EAST - SipNav LLC | 1K | 256 | 5 |
| AS19060US | BRYANLGH-AS-01 - Bryan Health | 1K | — | 2 |
| AS397822US | CRC-ASN - California Resources Corporation | 1K | — | 3 |
| AS18560US | LSCO1 - Lamar State College - Orange | 1K | — | 1 |
| AS53662US | COLLIER-COUNTY-SHERIFFS-OFFICE - Collier County Sheriff's Office | 1K | — | 1 |
| AS394088US | SCIENCEDMZ - Agriculture Research Service | 1K | — | 3 |
| AS393496US | OMNIHOTELS - OMNI HOTELS MANAGEMENT CORPORATION | 1K | — | 4 |
| AS398423US | APOG-CENT - Apogee Telecom Inc. | 1K | — | 3 |
| AS401231US | WATCH-BROADBAND-TX - Watch Communications | 1K | — | 1 |
| AS394404US | SMI-INET - Samaritan Ministries International | 1K | — | 3 |
| AS14740US | MAGNA5 - Magna5 MS LLC | 1K | — | 3 |
| AS36480US | BITRISE - Bitrise | 1K | — | 4 |
| AS14389US | CASHEXPRESS - Cash Express, LLC | 1K | — | 1 |
| AS400245US | AS400245 - AlphaCentri Corporation | 1K | 3 | 7 |
| AS393710US | WEBAIR-INTERNET-SINGAPORE - Webair Internet Development Company Inc. | 1K | 65.5K | 2 |
| AS17164US | CENTRACAREHEALTHSYSTEM - CentraCare Health | 1K | — | 4 |
| AS397613US | NTS - Network Technology Solutions, LLC | 1K | — | 2 |
| AS14210US | EDGECAST - Edgecast Inc. | 1K | 5 | 9 |
| AS46314US | STONEWAIN-SYSTEMS - Stonewain Systems, Inc. | 1K | — | 4 |
| AS399632US | TI-DALLAS-QD-HUB - Texas Instruments Incorporated | 1K | — | 4 |
| AS11346US | LAS-NIDR - PIMCO | 1K | — | 4 |
| AS29874US | CAMBRI-AS1 - Cambridge Associates | 1K | — | 4 |
| AS36644US | FVOICE-001 - 4Voice LLC | 1K | — | 4 |
| AS13612US | SYSMEX - Sysmex | 1K | — | 1 |
| AS399269US | TORRANCE-01 - City of Torrance | 1K | — | 4 |
| AS5767US | INFINITY - Infinity AccessNET | 1K | — | 1 |
| AS36349US | 3ESSENTIALS - 3Essentials Inc. | 1K | — | 4 |
| AS40461US | RFIH-NET5 - Retail Finance International Holdings, Inc. | 1K | 1 | 4 |
| AS395401US | WPC-AK - Whitestone Power & Communications | 1K | 66.1K | 10 |
| AS393290US | TPGROUP - Teleperformance Group, Inc. | 1K | 18 | 4 |
| AS400507US | CHARGER-ACCESS-ASN-01 - Charger Access, LLC | 1K | — | 4 |
| AS54180US | SMVLMS - SMITHVILLE TELEPHONE CO | 1K | — | 1 |
| AS395526US | REGALBELOIT-WAUSAU - Regal Rexnord Corporation | 1K | — | 4 |