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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 | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| 1.5K |
| — |
| 6 |
| AS63083US | CHAPINTELEPHONE - Chapin Long Distance, Inc. | 1.5K | — | 2 |
| AS55280US | RACKBYTE - RackByte LLC | 1.5K | 3 | 9 |
| AS401922US | MIXBOOST - VERYBOOST INC | 1.5K | 1 | 7 |
| AS572US | GBMC-TOW - Greater Baltimore Medical Center Inc | 1.5K | — | 4 |
| AS13925US | NULLROUTE - Null Route Networks | 1.5K | 3 | 6 |
| AS1057US | FALCON-WIRELESS - Falcon Wireless, LLC | 1.5K | — | 6 |
| AS402899US | PTLHL - Prestige | 1.5K | 3.7M | 13 |
| AS13517US | BAKER-MCKENZIE - Baker & McKenzie | 1.5K | — | 6 |
| AS398561US | CONASERVICES - CONA | 1.5K | — | 4 |
| AS393276US | CEA - Chugach Electric Association, Inc. | 1.5K | — | 6 |
| AS395506US | KN-DFW-ASN - KODIAK NETWORKS, INC. | 1.5K | 5 | 11 |
| AS63366US | TINTRI - Tintri Inc. | 1.5K | — | 3 |
| AS36407US | CERT - Software Engineering Institute | 1.5K | 1 | 4 |
| AS394378US | NMICA-01 - NMICA, LLC | 1.5K | — | 3 |
| AS23003US | MWAA - Metropolitan Washington Airports Authority | 1.5K | — | 3 |
| AS33730US | BAC-AS-LIB-EXTERNAL - Bank of America, National Association | 1.5K | — | 3 |
| AS26778US | TGH-TAMPA - Tampa General Hospital | 1.5K | — | 6 |
| AS46559US | 3XNET - ZGX US LLC | 1.5K | 1 | 6 |
| AS54187US | ECINET2 - EZE Castle Integration Inc. | 1.5K | 65.5K | 5 |
| AS397465US | SKYNET-BROADBAND - Skynet Broadband | 1.5K | — | 3 |
| AS397572US | DCCU - Delta Community Credit Union | 1.5K | — | 3 |
| AS1379US | AS1379 - SINCH INTERCONNECT LLC | 1.5K | — | 6 |
| AS212400US | DEDIROOM-LLC DEDIROOM LLC | 1.5K | — | 6 |
| AS33111US | CALIX-PACIFIC - Calix, Inc. | 1.5K | — | 5 |
| AS18486US | VTLA - NTT Global Networks Incorporated | 1.5K | — | 6 |
| AS27448US | KAYENTA - Kayenta Technologies | 1.5K | 65.5K | 3 |
| AS54714US | SECGLOBE - Secure Global Solutions LLC | 1.5K | — | 6 |
| AS55259US | NEUTRONA-NETWORKS-INTERNATIONAL - Transtelco Inc | 1.5K | — | 5 |
| AS64289US | MACARNE - Macarne.com | 1.5K | 7.2K | 12 |
| AS26135US | NETGAIN-TECHNOLOGY - Netgain Technology, LLC | 1.5K | — | 2 |
| AS396286US | VSTOASN - Federal Cartridge Co. | 1.5K | — | 6 |
| AS13839US | P1P3R - Piper Sandler Companies | 1.5K | — | 6 |
| AS400859US | EXO-BROADBAND - EXO BROADBAND | 1.5K | — | 6 |
| AS62988US | ARTCENTERCAMPUSES - Art Center College of Design | 1.5K | — | 6 |
| AS2641US | TSRI-AS - The Scripps Research Institute | 1.5K | — | 6 |
| AS21681US | MPOWER-POWERED-BY-MEC - Mecklenburg Electric Cooperative | 1.5K | 65.5K | 6 |
| AS40185US | JUNCT - Junction Networks, Inc. | 1.5K | 12 | 18 |
| AS17364US | SOKA-UNIVERSITY-OF-AMERICA - Soka University of America | 1.5K | — | 3 |
| AS19615US | SITEL-US - Sitel | 1.5K | — | 6 |
| AS26370US | AS-PALCOM - Pal Communications LLC | 1.5K | 4.1K | 7 |
| AS397367US | CRANBROOK-01 - Cranbrook Educational Community | 1.5K | — | 2 |
| AS62791US | DENOVOVENTURESLLC - DENOVO VENTURES LLC | 1.5K | — | 4 |
| AS23262US | IWANINC-US - IWAN INC. | 1.5K | — | 3 |
| AS393386US | LIBERTY-LINK-HOLDEN - Liberty Link LLC | 1.5K | — | 2 |
| AS11829US | CADENCE - Cadence Design Systems, Inc. | 1.5K | — | 6 |
| AS19067US | VAILSYS - Vail Systems, Inc. | 1.5K | — | 6 |