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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 | 24,358 |
| 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 | 4,342 |
| ABBATECH - ABBA TECHNOLOGIES |
| 512 |
| — |
| 2 |
| AS197841US | MICHAEL - Michael Newcomb, Sole Proprietorship | 512 | 32 | 4 |
| AS36779US | LEARFIELD - Learfield Communications, LLC | 512 | — | 2 |
| AS396063US | APJ-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 1 |
| AS27329US | DUANE-MORRIS-PHILADELPHIA - Duane Morris | 512 | — | 1 |
| AS395953US | WLN-ASID - World Line Networks | 512 | — | 2 |
| AS1620US | AS-DOELEGAL - doeLEGAL, Inc. | 512 | — | 2 |
| AS399144US | SUHSD-INTERNET-2026 - Sequoia Union High School District | 512 | — | 2 |
| AS11948US | DEVELOPMENT-GROUP-INC - Development Group, Inc | 512 | — | 2 |
| AS17361US | AUTO-AS17363 - Automated Securities Clearance LLC | 512 | — | 2 |
| AS33173US | MYGN-US - Myriad Genetics Incorporated | 512 | — | 2 |
| AS55062US | GSC-MINNEAPOLISMN - Gannett Supply Corp. - Minneapolis, MN | 512 | — | 2 |
| AS36335US | TGNA-KXTV - TEGNA Inc. | 512 | — | 2 |
| AS53937US | SMH-AS-NO - Sarasota Memorial Hospital | 512 | — | 2 |
| AS25861US | TOGGLE FIRE NETWORKS - Toggle Fire Networks | 512 | 1 | 2 |
| AS21985US | MASCO-CONTRACTOR-SERVICES - Masco Contractor Services | 512 | — | 2 |
| AS396027US | PORTAGEPUBLICSCHOOLS - Portage Public Schools | 512 | 1 | 3 |
| AS397998US | TGNA-WNEP - TEGNA Inc. | 512 | — | 2 |
| AS54982US | RATE - Guaranteed Rate Inc | 512 | — | 2 |
| AS15033US | XPRES-PDX - XPRESSBET INC. | 512 | — | 2 |
| AS14622US | AS-14622-CHI - GoFIBER | 512 | — | 1 |
| AS32334US | CLOUDCALL-AS - CloudCall Inc | 512 | 1 | 3 |
| AS25891US | SVA-ANS - School Of Visual Arts, Inc. | 512 | — | 1 |
| AS40813US | INDIANA-MEMBERS-CU - Indiana Members Credit Union | 512 | — | 2 |
| AS26302US | SOBOBA - Soboba Casino | 512 | — | 2 |
| AS393562US | MOB-ASN - Mobilitie, LLC | 512 | 6 | 8 |
| AS55128US | MCFASSOC - McFarlane Associates LLC | 512 | 17 | 4 |
| AS22196US | NEULION - NeuLion, Inc. | 512 | — | 2 |
| AS18891US | CONFLUENCE - Confluence Technologies | 512 | — | 2 |
| AS54357US | FIRST-SOLAR - First Solar, inc. | 512 | — | 2 |
| AS54675US | TGNA-WGRZ - TEGNA Inc. | 512 | — | 2 |
| AS395348US | DATASPINDLE - DataSpindle | 512 | 2K | 4 |
| AS46142US | BP-1 - BridgePay Network Solutions, LLC | 512 | — | 2 |
| AS401062US | MD-HAGERSTOWN-COMMUNITY-COLLEGE-01 - Hagerstown Community College | 512 | — | 1 |
| AS20005US | SANDHILLS-SA - SANDHILLS PUBLISHING | 512 | — | 1 |
| AS62973US | CATAWBAVALLEYMC - Catawba Valley Medical Center | 512 | — | 2 |
| AS401294US | ROOFSOFT - RoofSoft LLC | 512 | — | 2 |
| AS17105US | NISA-STL - NISA Investment Advisors | 512 | — | 2 |
| AS398412US | WEBER-COUNTY-01 - WEBER COUNTY | 512 | — | 1 |
| AS396861US | PROPATH - ProPath Services, LLC | 512 | — | 2 |
| AS14449US | FIRSTUP-ASN - Firstup, Inc. | 512 | — | 2 |
| AS29711US | CENTURA-HEALTH - Centura Health Corporation | 512 | — | 2 |
| AS12201US | SCC-LAKELAND - Saddle Creek Corporation | 512 | — | 2 |
| AS40929US | MOEDOVE-BN - MoeDove | 512 | 25.7K | 81 |
| AS32983US | CORELIGHTNET-GOVCLOUD - Corelight, Inc. | 512 | 4 | 6 |
| AS399272US | BARNHOLDT-NA - Barnholdt, LLC | 512 | 271 | 15 |
| AS398385US | PHOTOSHELTER-CDN - PhotoShelter, Inc. | 512 | — | 2 |