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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 | 23,961 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,159 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 | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| 1.5K |
| — |
| 3 |
| AS55280US | RACKBYTE - RackByte LLC | 1.5K | 3 | 9 |
| AS203120US | GTGL Global Telecom Group LLC | 1.5K | — | 3 |
| AS19558US | KMCN-ASN - Kettering Medical Center | 1.5K | — | 6 |
| AS398370US | NORTHWOODS-COMMUNICATION-TECHNOLOGIES - Northwoods Connect | 1.5K | — | 3 |
| AS399457US | NWTEL-CATV - NEW WINDSOR TELEPHONE CO | 1.5K | — | 5 |
| AS40122US | MORTGAGE-INFORMATION-SERVICES-INC - Mortgage Information Services INC | 1.5K | — | 6 |
| AS395378US | CASCADEDIVIDE-DC - Cascade Divide Partners, LLC | 1.5K | 131.1K | 3 |
| AS13517US | BAKER-MCKENZIE - Baker & McKenzie | 1.5K | — | 6 |
| AS54714US | SECGLOBE - Secure Global Solutions LLC | 1.5K | — | 6 |
| AS395506US | KN-DFW-ASN - KODIAK NETWORKS, INC. | 1.5K | 6 | 12 |
| AS400523US | INTERSYSTEMS - InterSystems Corporation | 1.5K | — | 5 |
| AS31911US | BSI-UBS - Vitalant | 1.5K | — | 4 |
| AS40185US | JUNCT - Junction Networks, Inc. | 1.5K | 12 | 18 |
| AS394378US | NMICA-01 - NMICA, LLC | 1.5K | — | 3 |
| AS17123US | TEAM-HEALTH - Team Health, Inc. | 1.5K | — | 6 |
| AS33111US | CALIX-PACIFIC - Calix, Inc. | 1.5K | — | 5 |
| AS398415US | EPEC - EPEC Technologies, LLC | 1.5K | 4.1K | 4 |
| AS11829US | CADENCE - Cadence Design Systems, Inc. | 1.5K | — | 6 |
| AS396286US | VSTOASN - Federal Cartridge Co. | 1.5K | — | 6 |
| AS63366US | TINTRI - Tintri Inc. | 1.5K | — | 3 |
| AS26135US | NETGAIN-TECHNOLOGY - Netgain Technology, LLC | 1.5K | — | 2 |
| AS393282US | UCB-1 - University of California at Berkeley | 1.5K | 1 | 7 |
| AS47000US | SUPERION - Superion, LLC | 1.5K | — | 6 |
| AS36847US | DELTA-DENTAL-OF-CALIFORNIA - Delta Dental of California | 1.5K | — | 6 |
| AS30187US | BROWARD-COUNTY-COMMISION - Broward County | 1.5K | — | 6 |
| AS402443US | AS-SIMPL-001 - SimpliFiber | 1.5K | — | 2 |
| AS19880US | REALCOMPII - REALCOMP II LTD. | 1.5K | — | 6 |
| AS393303US | RYDERSYSTEMINC - Ryder System, Inc. | 1.5K | — | 6 |
| AS32381US | GOOGLE CLOUD NETWORKING - Google Access LLC | 1.5K | 3 | 6 |
| AS27284US | FOURPLEX-ASN - Fourplex Telecom LLC | 1.5K | 19 | 8 |
| AS393773US | ROMA-ABILENE - Oracle Corporation | 1.5K | — | 6 |
| AS54187US | ECINET2 - EZE Castle Integration Inc. | 1.5K | 65.5K | 5 |
| AS1855US | RBT-EDGE - RTX BBN Technologies, Inc. | 1.5K | — | 3 |
| AS27448US | KAYENTA - Kayenta Technologies | 1.5K | 65.5K | 3 |
| AS46202US | MICHAELS-ATT-DS3 - Michaels Stores, Inc. | 1.5K | — | 6 |
| AS395778US | PBC-QNC-WA - Premera Blue Cross | 1.5K | — | 3 |
| AS402197US | RESIDENCE-FIBER-LLC - Residence Fiber | 1.5K | 2.6K | 14 |
| AS62893US | FIBERWAVE - Fiber Wave, LLC | 1.5K | — | 5 |
| AS397832US | EPF-CO - Arconic Inc. | 1.5K | — | 3 |
| AS18523US | CHEP-AS1 - CHEP International, Inc. | 1.5K | — | 6 |
| AS46182US | VAROLII - Microsoft Corporation | 1.5K | — | 4 |
| AS398079US | EMINENT - Eminent, Inc | 1.5K | — | 6 |
| AS19809US | ASNBLK-VTLA2 - NTT Global Networks Incorporated | 1.5K | — | 6 |
| AS36062US | DOUBLE-VERIFY - DoubleVerify, Inc. | 1.5K | — | 5 |
| AS63033US | SWIFT-NET - S.W.I.F.T. Services LLC | 1.5K | 65.5K | 7 |
| AS46432US | AS-MITRA - Miami Transcoding Services Llc | 1.5K | — | 6 |