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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 74K |
| — |
| 25 |
| AS2552US | WUSTL-ASN - Washington University | 74K | 131.1K | 5 |
| AS3911US | MIS-AS - Micron Technology, Inc. | 73.7K | — | 32 |
| AS62676US | UMD-PUBLIC-AS - University of Michigan - Dearborn | 73.7K | — | 2 |
| AS22887US | WIU-AS - Western Illinois University | 73.7K | — | 5 |
| AS11745US | USNH - University System of New Hampshire | 73.7K | 65.5K | 3 |
| AS22968US | MIAMI-UNIVERSITY - Miami University | 73.7K | — | 2 |
| AS13611US | CDC - U.S. Center For Disease Control and Prevention | 73.7K | — | 2 |
| AS14954US | FHCRC - The Fred Hutchinson Cancer Research Center | 73.7K | — | 2 |
| AS7106US | INDEPENDENTSFIBERNETWORK - Com Net, Inc. | 73.7K | 65.5K | 9 |
| AS32136US | FARMINGDALESTATE - Farmingdale State College | 73.7K | — | 2 |
| AS1561US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 73.5K | — | 8 |
| AS4373US | OCLC-AS - Online Computer Library Center | 73.2K | — | 19 |
| AS10546US | MSSTATE - Mississippi State University | 73.2K | 65.5K | 7 |
| AS397353US | TDY-US1-DC - Teledyne Technologies Incorporated | 73.2K | — | 31 |
| AS54483US | GEOLINKS-AS - GeoLinks | 73.2K | 196.6K | 104 |
| AS1828US | UNITAS - Unitas Global | 73.2K | 671.8K | 155 |
| AS27336US | SENTARA-HEALTH-CARE - Sentara Healthcare | 73K | — | 22 |
| AS399073US | TBB-ASN - BUNNY TECHNOLOGY LLC | 73K | — | 284 |
| AS56508US | ARDC Amateur Radio Digital Communications | 73K | — | 30 |
| AS7960US | CALPOLY-NET-ENS - California Polytechnic State University | 73K | — | 23 |
| AS36548US | ASCOJ - City of Jacksonville, Florida | 72.8K | — | 30 |
| AS396465US | SACSTATE - California State University, Sacramento | 72.7K | 1 | 9 |
| AS37US | DNIC-AS-00037 - Navy Network Information Center (NNIC) | 72.7K | 1 | 18 |
| AS366US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 72.4K | 257 | 20 |
| AS63182US | RAPIDSCALE - RapidScale, Inc | 72.4K | — | 50 |
| AS14890US | HAYBOONET - Haynes and Boone, L.L.P. | 72.4K | — | 7 |
| AS63410US | PRIVATESYSTEMS - PrivateSystems Networks | 72.4K | 1.4K | 45 |
| AS10349US | TULANE - Tulane University | 72.4K | — | 15 |
| AS15267US | 702COM - 702 Communications | 72.4K | 131.1K | 24 |
| AS17094US | MUTOMAHA-I - Mutual of Omaha Insurance Company | 72.2K | — | 10 |
| AS57976US | BLIZZARD Blizzard Entertainment, Inc | 71.9K | 65.6K | 184 |
| AS11757US | WHIRLPOOL-ASN - Whirlpool Corporation | 71.9K | — | 14 |
| AS32537US | XILINX - Xilinx Incorporated | 71.9K | — | 20 |
| AS14726US | CHISHOLMBB - Chisholm Broadband LLC | 71.7K | — | 9 |
| AS32251US | BNP-PARIBAS-NEW-YORK - BNP PARIBAS US WHOLESALE HOLDINGS, CORP. | 71.7K | — | 4 |
| AS371US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 71.7K | — | 5 |
| AS26333US | UNONET - University of New Orleans | 71.7K | — | 6 |
| AS32851US | WAL-MART-2 - Wal-Mart Stores, Inc. | 71.7K | — | 19 |
| AS47US | USC-AS - University of Southern California | 71.7K | — | 17 |
| AS36236US | NETACTUATE - NetActuate, Inc | 71.4K | 37.4K | 263 |
| AS32906US | FMGLOBAL - FACTORY MUTUAL INSURANCE COMPANY | 71.4K | — | 12 |
| AS21947US | BCI - Blackfoot Telephone Cooperative, Inc. | 71.4K | 196.6K | 17 |
| AS62976US | CAMPLINK - Camplink | 71.4K | — | 20 |
| AS3064US | AFFINITY-FTL - Ntirety, Inc. | 71.2K | 1 | 53 |
| AS14789US | CLOUDFLARENET - Cloudflare, Inc. | 71.2K | 266 | 544 |
| AS26551US | SARGENT-AND-LUNDY - Sargent & Lundy Engineers | 71.2K | — | 5 |