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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 | 24,346 |
| 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 |
| 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 | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 2 |
| AS1544US | DNIC-ASBLK-01534-01546 - Headquarters, USAISC | 512 | — | 2 |
| AS13394US | SCHUYLKILL-INTERMEDIATE-UNIT-29 - SCHUYLKILL INTERMEDIATE UNIT 29 | 512 | — | 1 |
| AS23156US | VG-NET-01 - The Vincit Group | 512 | — | 2 |
| AS46763US | RIEMER-BRAUNSTEIN - Riemer & Braunstein LLP | 512 | — | 2 |
| AS46766US | ICONIC-AS - Iconic Internet, LLC | 512 | 3 | 5 |
| AS39618US | HostCram HostCram LLC | 512 | 256 | 3 |
| AS36003US | NOS-NOG - NOS Network Operations Group | 512 | 65.5K | 3 |
| AS54266US | ABCFINANCIAL - ABC Financial Services, Inc. | 512 | — | 2 |
| AS32454US | PRESIDENTIAL-PRAYER-TEAM - The Presidential Prayer Team, Inc. | 512 | — | 2 |
| AS393584US | NANTCLOUDSERVICESLLC - NantCloud Services LLC | 512 | — | 2 |
| AS401879US | RACKNODE-AS - RackNode | 512 | 257 | 4 |
| AS22805US | CNL-FINANCIAL-GROUP - CNL Financial Group Inc. | 512 | — | 2 |
| AS23433US | STAMPS-COM - STAMPS.COM | 512 | — | 2 |
| AS397440US | TAVANT-SC9-DATACENTER - Tavant Technologies, Inc. | 512 | — | 2 |
| AS46695US | REGENT-ASN1 - Regent University | 512 | — | 2 |
| AS396368US | TL-861 - TetherView LLC | 512 | — | 2 |
| AS18949US | BARTELL-CORP-INTERNET - Bartell Hotels, A California Limited Partnership | 512 | — | 1 |
| AS27369US | SWEDISH - Swedish Covenant Hospital | 512 | — | 2 |
| AS400926US | KIWI-TELECOM-01 - KIWI TELECOM | 512 | 65.5K | 3 |
| AS40639US | KORBELINC - F Korbel & Bros Inc | 512 | — | 2 |
| AS46802US | GLADIATOR-TECH - Gladiator Technologies, LLC | 512 | — | 2 |
| AS54528US | RICHIE-USA - Richie Software USA, Inc. | 512 | 17 | 4 |
| AS401504US | LONG-BEACH-01 - City of Long Beach | 512 | — | 2 |
| AS54918US | INX-01 - Infor (US), Inc | 512 | — | 2 |
| AS394647US | AS394647 - Crown Castle Fiber LLC | 512 | — | 1 |
| AS33416US | JMCGH-WTH-1950 - West Tennessee Healthcare | 512 | — | 2 |
| AS36298US | INFOCISION - InfoCision Management Corporation | 512 | — | 2 |
| AS54287US | ASXCIE-SJC - Axcient, Inc | 512 | — | 1 |
| AS22754US | GAPARTNERS-CT - General Atlantic Service Corp. | 512 | — | 2 |
| AS54492US | CAREFIRST-BCBS-01 - CareFirst Management Company, LLC | 512 | — | 1 |
| AS18646US | BITMAX - Bitmax, Inc. | 512 | 1 | 3 |
| AS53682US | COLO-1 - Ntiva, Inc | 512 | — | 2 |
| AS54820US | DN-TX - Diebold Nixdorf, Incorporated | 512 | — | 2 |
| AS400393US | DIGITAL-EXAMPLE - Digital Example LLC | 512 | 256 | 3 |
| AS208379US | APTN The Associated Press | 512 | — | 2 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS396017US | COMCAST-MES - Comcast Cable Communications, LLC | 512 | 1 | 3 |
| AS19152US | IBMCCH-TOR - IBM | 512 | — | 2 |
| AS54120US | MFF - MARC FISHER LLC | 512 | — | 2 |
| AS399947US | AURORA-GEO - Pacific Dataport Inc. | 512 | — | 1 |
| AS31752US | HEI-30-31752 - Heartland Express, Inc. of Iowa | 512 | — | 2 |
| AS397419US | OREGON-STATE-LOTTERY - Oregon State Lottery | 512 | — | 2 |
| AS402766US | MARKVD-NET - Mark | 512 | 256 | 3 |
| AS32642US | NICMAN - NICMAN GROUP LLC | 512 | — | 2 |
| AS40061US | UL-ASN-LAX1 - UnitedLayer, LLC | 512 | 8.2K | 3 |
| AS396538US | NORTHSITE-DATA - Northsite Data, LLC | 512 | — | 1 |