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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS22539US | CARDINALHEALTH-PR - Cardinal Health, Inc. | 256 | — | 1 |
| AS7921US | ADTRAV - Adtrav Corporation | 256 | — | 1 |
| AS26261US | E2CNET - E Squared C Inc. | 256 | — | 1 |
| AS401643US | DRAGONFLY-INTERNET-01 - Dragonfly Internet | 256 | 65.5K | 2 |
| AS401274US | AWSOM - Alice L. Walton School of Medicine | 256 | — | 1 |
| AS210659US | RLRISK Rogers and Lynch LLC | 256 | 48 | 4 |
| AS398639US | WHV - Warm Hearth Inc | 256 | — | 1 |
| AS398136US | GOAA-NET-1 - Greater Orlando Aviation Authority | 256 | — | 1 |
| AS402212US | NICKTRONICIT - NicktronicIT LLC | 256 | 1 | 2 |
| AS33335US | HEAVISIDE-HOSTING-GROUP - Heaviside Hosting LLC | 256 | — | 1 |
| AS402399US | IRON - IRONHOSTING | 256 | — | 1 |
| AS394483US | DSS - Doyle Security Systems, Inc. | 256 | — | 1 |
| AS26624US | MOMEN-5-ATL-LAB - Momentum Telecom, Inc. | 256 | — | 1 |
| AS398124US | BLOONO-AS-01 - Bloono, Inc. | 256 | — | 1 |
| AS11005US | DOWNINGTOWN-AREA-SD - Downingtown Area School District | 256 | — | 1 |
| AS400038US | BEMIS-MANUFACTURING - BEMIS MANUFACTURING COMPANY | 256 | — | 1 |
| AS400369US | TALLEYINC - Talley Inc. | 256 | — | 1 |
| AS63364US | VPHARM - Vertex Pharmaceuticals | 256 | — | 1 |
| AS33418US | EQUITABLE-INTERNET-INITATIVE - Detroit Community Technology Project | 256 | — | 1 |
| AS395974US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS29756US | RPEAS - RPE Outsourcing | 256 | — | 1 |
| AS393470US | BLACKLIST - Mocan Media LLC | 256 | — | 1 |
| AS30381US | JIMAMBA - JIMAMBA LLC | 256 | — | 1 |
| AS64293US | MHB-AS1 - Mobile Heartbeat | 256 | — | 1 |
| AS401613US | FSHAC - Four Seasons Heating & Air Conditioning, LLC | 256 | — | 1 |
| AS402694US | PRIMARY-ASN-1 - Primary | 256 | — | 1 |
| AS46828US | MILESK-AS1 - SILVER STAR BRANDS, INC. | 256 | — | 1 |
| AS53592US | KEPOS - Kepos Capital LP | 256 | — | 1 |
| AS401756US | SWANROE - Swanroe Internet Cooperative LLC | 256 | 4.1K | 2 |
| AS401036US | FRIENDOWMENT - Friendowment, LLC | 256 | 257 | 3 |
| AS208462US | BISUP COSMIC STORE LLC | 256 | — | 1 |
| AS26526US | ENVESTNETPMC - ENV | 256 | — | 1 |
| AS398112US | POET-ASN-01 - POET, LLC | 256 | — | 1 |
| AS393426US | HALP - Harris Associates L.P. | 256 | — | 1 |
| AS32671US | LEANLOGISTICS - BluJay Solutions Inc. | 256 | — | 1 |
| AS54584US | PMHC - Phelps Memorial Health Center | 256 | — | 1 |
| AS394935US | CHUCK-RESERVA - Chuck Reserva, Sole Proprietorship | 256 | 64 | 5 |
| AS21914US | RXO-CORPORATE-SOLUTIONS - RXO Corporate Solutions, LLC | 256 | — | 1 |
| AS401997US | ANC-187-AS - Arkansas Northeastern College | 256 | — | 1 |
| AS46152US | SLG - SL Green Realty Corp | 256 | — | 1 |
| AS396945US | MIDWESTLABS - Midwest Laboratories | 256 | — | 1 |
| AS16707US | UNIFI-MFG-INC - Unifi, Inc | 256 | — | 1 |
| AS17016US | EIS-NET - Elevation Improvement Systems, LLC | 256 | — | 1 |
| AS397552US | NORTHEAST-DELTA-DENTAL - Northeast Delta Dental | 256 | — | 1 |
| AS39980US | BAER-CONSULTING - Baer Consulting, Incorporated | 256 | — | 1 |
| AS26993US | STANDARDASN - STANDARD TEXTILE CO., INC. | 256 | — | 1 |