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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS5545US | SERVEREL-AS Serverel Inc. | 256 | — | 1 |
| AS402122US | SSSOOO-NETWORKS - SSS.OOO LLC | 256 | 1 | 2 |
| AS53473US | BLOCKDC - Kinetic Web Solutions | 256 | — | 1 |
| AS25811US | DODI-01 - Diamond Offshore, LLC | 256 | — | 1 |
| AS40272US | ALLENINSTITUTE - Allen Institute | 256 | — | 1 |
| AS40037US | LSR-LLP - Labaton Sucharow LLP | 256 | — | 1 |
| AS46390US | NABNY245 - National Australia Bank Limited | 256 | — | 1 |
| AS400818US | AUSRA-SYSTEMS - Ausra LLC | 256 | 257 | 3 |
| AS16915US | MINNESOTATWINSLLC - Minnesota Twins, LLC | 256 | — | 1 |
| AS399633US | HQ-ASN - First Internet Bank of Indiana | 256 | — | 1 |
| AS26767US | NGP-VAN - NGP VAN, Inc. | 256 | — | 1 |
| AS14950US | LHM-GROUP - Larry H. Miller Dealerships | 256 | — | 1 |
| AS33433US | CLINICOMP - CLINICOMP INTERNATIONAL, INC. | 256 | — | 1 |
| AS402316US | ILLUMIO-INC - ILLUMIO, | 256 | — | 1 |
| AS62572US | TTD-LA - The Technology Depot, Inc. | 256 | — | 1 |
| AS14983US | LSAC-AS - Law School Admission Council | 256 | — | 1 |
| AS4890US | ASN-RICHLINE-FL - Richline Group Inc | 256 | — | 1 |
| AS64293US | MHB-AS1 - Mobile Heartbeat | 256 | — | 1 |
| AS47075US | TCNINC - TCN, Inc. | 256 | — | 1 |
| AS40433US | AEBS-ASN - AE Business Solutions | 256 | — | 1 |
| AS33341US | EMSER-ASN01 - Emser Tile LLC | 256 | — | 1 |
| AS398112US | POET-ASN-01 - POET, LLC | 256 | — | 1 |
| AS33335US | HEAVISIDE-HOSTING-GROUP - Heaviside Hosting LLC | 256 | — | 1 |
| AS401092US | ESUSDNET - El Segundo Unified School District | 256 | — | 1 |
| AS46578US | AS46578 - Seer Capital Management, LP | 256 | — | 1 |
| AS400958US | SYNIAC - Syniac | 256 | — | 1 |
| AS22384US | PERFORMIVE-VNI - Performive LLC | 256 | — | 1 |
| AS32799US | BOLD-TECHNOLOGIES - Bold Technologies, Ltd. | 256 | — | 1 |
| AS27508US | TRDLNK - TradeLink, LLC | 256 | — | 1 |
| AS1975US | PROQUEST-AS - PROQUEST LLC | 256 | — | 1 |
| AS402274US | ZENNET - ZenNet LLC | 256 | — | 1 |
| AS14870US | FLEXERA-SC4 - Flexera Software, LLC | 256 | — | 1 |
| AS11678US | DOE-NTS-AS - U.S. Department of Energy | 256 | 65.5K | 2 |
| AS393935US | SCCU - Sierra Central Credit Union | 256 | — | 1 |
| AS394664US | PECKHAM-INC - Peckham, Inc. | 256 | — | 1 |
| AS2725US | BES-NET - Berkeley Educational Services of New Jersey, Inc. | 256 | — | 1 |
| AS394926US | DKM4-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS10916US | FIRSTVOLUNTEER - First Volunteer Bank | 256 | — | 1 |
| AS399708US | NCWC-ARIN-ASN - North Carolina Wesleyan College | 256 | — | 1 |
| AS11074US | CROWNCASTLE-AS11074 - Crown Castle Fiber LLC | 256 | — | 1 |
| AS393920US | MEREDITHCORP2 - Meredith Corp. | 256 | — | 1 |
| AS32031US | BVUSD229 - BLUE VALLEY USD NO 229 | 256 | 1 | 2 |
| AS393375US | BT-USMPL-MULTIHOME - Bio-Techne Corporation | 256 | — | 1 |
| AS400711US | SUTTON-BANK-01 - Sutton Bank | 256 | — | 1 |
| AS399940US | EP4051 - ANTEIL INC | 256 | — | 1 |
| AS400827US | HCDL-VIRGINIA-DATA-CENTER - H5 Data Centers | 256 | — | 1 |