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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 |
| UCCSDA - Upper Columbia Conference / SDA |
| 512 |
| — |
| 2 |
| AS26984US | UTL-17-26984 - Universal TelCom LLC | 512 | — | 2 |
| AS11327US | NCI-GROUP-INC - NCI Group, Inc. | 512 | — | 2 |
| AS11651US | AS-TKCHOLDINGS-LLC - Centric Group, LLC | 512 | — | 2 |
| AS36217US | IRONPATH - NetActuate, Inc | 512 | 1 | 3 |
| AS16927US | IHOPKC - IHOPKC | 512 | — | 2 |
| AS402003US | EZGAMEHOST-NET-1 - EZ Game Host, LLC | 512 | 256 | 3 |
| AS3425US | ESNET-AS - ESnet | 512 | — | 2 |
| AS54247US | BATTERY-MANAGEMENT - Battery Ventures | 512 | — | 2 |
| AS397624US | PH-LSK-001 - Parker Hannifin Corporation | 512 | — | 1 |
| AS395915US | ENS - Edge Network Services LLC | 512 | 17 | 4 |
| AS62977US | PAPEGROUP - The Pape Group, Inc. | 512 | — | 2 |
| AS19395US | BCCC-COLLEGE-I2 - Bucks County Community College | 512 | — | 2 |
| AS40016US | MESIROW - MESIROW FINANCIAL HOLDINGS, INC. | 512 | — | 2 |
| AS394411US | DPH-AS - Department of Public Health | 512 | — | 2 |
| AS63346US | ASCENT-LLC - Ascent LLC | 512 | — | 2 |
| AS30474US | IMPRIVATA-DC - Imprivata Inc | 512 | — | 2 |
| AS400586US | RDM-TECH - rdm.tech | 512 | 256 | 3 |
| AS29884US | EQUINIX-EC-DA - Equinix, Inc. | 512 | 1 | 3 |
| AS32269US | CITY-OF-IDAHO-FALLS - City of Idaho Falls | 512 | — | 2 |
| AS14459US | ENTERTAINMENTPARTNERS-AS-A - Entertainment Partners | 512 | — | 2 |
| AS63164US | TGNA-WWL-WUPL - TEGNA Inc. | 512 | — | 2 |
| AS395971US | QUESTSOFTWARE - Quest Software Inc | 512 | — | 2 |
| AS18606US | AS-METER-1 - Meter Inc. | 512 | — | 2 |
| AS398002US | TGNA-WQAD - TEGNA Inc. | 512 | — | 2 |
| AS19636US | FORMFACTOR - FORMFACTOR, INC | 512 | — | 1 |
| AS33088US | COMPSYCH-AS - COMPSYCH EMPLOYEE ASSISTANCE PROGRAMS, INC. | 512 | — | 2 |
| AS401000US | BYTENAP-NETWORKS-LLC - ByteNAP Networks LLC | 512 | — | 2 |
| AS398148US | MOATIT - MOATiT, LLC | 512 | — | 2 |
| AS398758US | AVONDALE - CITY OF AVONDALE | 512 | — | 2 |
| AS398547US | KAT-NET-SERVERS - Kat-Net Servers LLC | 512 | — | 2 |
| AS400961US | LOGISTIVIEW-CLOUD-01 - LogistiVIEW, Inc. | 512 | — | 2 |
| AS398737US | INTELLIVOICE - IntelliVoice | 512 | — | 2 |
| AS15266US | THE-TEAM-COMPANIES - Cast & Crew LLC | 512 | — | 2 |
| AS63376US | TOUCHTONE-CUSTS - TouchTone Communications | 512 | — | 2 |
| AS46587US | 2991400 - Cerberus Capital Management LP | 512 | — | 2 |
| AS29750US | ALASKA-AIRGROUP-IGQ - Alaska Airlines, Inc. | 512 | — | 2 |
| AS398380US | DCH-ASN-01 - Driscoll Children's Hospital | 512 | — | 2 |
| AS401807US | INTUITY - Intuity Consultants, Inc. | 512 | — | 2 |
| AS17189US | MITSUBISHI-UFJ-TRUST-BANKING - Mitsubishi UFJ Trust & Banking Corporation | 512 | — | 2 |
| AS11428US | BEAM-GLOBAL - Jim Beam Brands Co. | 512 | — | 2 |
| AS54986US | FLOWERS - 1-800-Flowers.com, Inc. | 512 | — | 2 |
| AS16653US | CVENT - Cvent, Inc. | 512 | 1 | 3 |
| AS54244US | ICS - ICSolutions | 512 | — | 2 |
| AS402444US | LUMMI-NATION-CONNECT - Lummi | 512 | 65.5K | 2 |
| AS53521US | CDS-200 - Complete Discovery Source | 512 | — | 2 |
| AS36279US | MISERI-COLLEGE-1 - Misericordia University | 512 | — | 2 |