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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 | 24,555 |
| 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 |
| 232 |
| 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 | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 256 |
| — |
| 1 |
| AS397590US | MBBC-AS-01 - Milwaukee Brewers Baseball Club, LP | 256 | — | 1 |
| AS397656US | CHI01-US-CENTRIEN-COM - Centrien | 256 | — | 1 |
| AS13583US | AIP-AS13583 - Allstate Identity Protection | 256 | — | 1 |
| AS54345US | FARM-BUREAU-MUTUAL-INSURANCE-OF-IDAHO-01 - FARM BUREAU MUTUAL INSURANCE COMPANY OF IDAHO | 256 | 1 | 2 |
| AS396840US | SPI-BLOCK-A - Sky Path Inc. | 256 | — | 1 |
| AS3472US | DNIC-AS-03472 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS39482US | sfm-hk Supply Frame, Inc. | 256 | — | 1 |
| AS398245US | TS-AS-1011 - Trithium Solutions LLC | 256 | — | 1 |
| AS46607US | FORREST-T-JONES - Forrest T Jones & co, Inc. | 256 | — | 1 |
| AS17236US | TULSAL-74103 - Tulsa City-County Library | 256 | — | 1 |
| AS398552US | CISD-ASN - Cleburne Independent School District | 256 | — | 1 |
| AS1084US | IMIL-4-NETWORK - Intermountain Medical Imaging | 256 | — | 1 |
| AS22455US | ESL-FCU - ESL Federal Credit Union | 256 | — | 1 |
| AS395884US | TBR01 - Tampa Bay Rays Baseball, Ltd. | 256 | — | 1 |
| AS26781US | BHSALA - Baptist Health System of Alabama | 256 | — | 1 |
| AS27189US | MARTEN-TRANSPORT-LTD - Marten Transport, Ltd. | 256 | — | 1 |
| AS36401US | SHM-5224 - Information Management | 256 | — | 1 |
| AS394050US | KIRBTECH - Kirbtech LLC | 256 | — | 1 |
| AS198005US | Andrzejewski-David Andrzejewski David | 256 | — | 1 |
| AS32426US | WV-SCHOOL-OF-OSTEOPATHIC-MEDICINE - WV School of Osteopathic Medicine | 256 | — | 1 |
| AS400904US | KEY-MANAGEMENT - Key Investment | 256 | — | 1 |
| AS13699US | SWFLAFC - SWF Associates in Podiatric Medicine & Surgery | 256 | 1 | 2 |
| AS394711US | KORGRID - KorGrid, LLC | 256 | — | 1 |
| AS395604US | COCORTEZ-2016 - City of Cortez | 256 | — | 1 |
| AS16998US | ZEUSINC-AS - Zeus Industrial Products, Inc. | 256 | — | 1 |
| AS46631US | CITYOFWHEATON - City of Wheaton | 256 | — | 1 |
| AS62854US | CBI1925 - Cheney Bros, Inc. | 256 | — | 1 |
| AS27335US | BLUERIDGE-01 - Blueridge Capital, L.L.C. | 256 | — | 1 |
| AS54428US | FRD-ASN - Leonardo DRS, Inc. | 256 | — | 1 |
| AS397489US | MATTHEWS-209 - Matthews Book Company | 256 | — | 1 |
| AS10257US | TANGOE-PROD-1 - Tangoe US, Inc. | 256 | — | 1 |
| AS210655US | LaCrette Brian LaCrette | 256 | 1 | 2 |
| AS32048US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS31804US | WEYCO-GROUP-INC - WEYCO GROUP, INC | 256 | — | 1 |
| AS398403US | SSI - Alarm Detection Systems, Inc | 256 | — | 1 |
| AS11347US | ORC-F2 - ORC | 256 | — | 1 |
| AS399442US | OLELO-COMMUNITY-MEDIA-01 - OLELO COMMUNITY MEDIA | 256 | — | 1 |
| AS393267US | ATCC - American Type Culture Collection | 256 | — | 1 |
| AS54348US | CAROMONT-HEALTH - CaroMont Health Inc. | 256 | — | 1 |
| AS399817US | LAER-AS-DWF1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS23926US | YAHOO-INZ - INZ Edge site | 256 | 2 | 3 |
| AS55262US | ANTHEMCONNECT-LA2 - Anthem Broadband | 256 | 65.5K | 2 |
| AS395408US | SBLI-MA - SBLI | 256 | — | 1 |
| AS402247US | FLEW - flew llc | 256 | 18 | 4 |
| AS46291US | LODCO - LOD Communications, Inc. | 256 | — | 1 |
| AS399808US | LAER-AS-NYC1 - UnitedLayer, LLC | 256 | 1 | 2 |