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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| — |
| 1 |
| AS11009US | CARLOWUNIV - Carlow University | 256 | — | 1 |
| AS199745US | terrible terrible llc | 256 | 1 | 2 |
| AS398372US | MINETWORKS - MINetworks, Inc. | 256 | — | 1 |
| AS396136US | ECHO-ATL1 - Echo Technologies, LLC | 256 | — | 1 |
| AS23335US | ARKNET-AIRFI - ArkNet AirFi LLC | 256 | — | 1 |
| AS5635US | GLAXOSMITHKLINE - GlaxoSmithKline | 256 | — | 1 |
| AS398455US | MERIDIANCC - Meridian Community College | 256 | — | 1 |
| AS64198US | ESET-LLC - ESET LLC | 256 | — | 1 |
| AS27414US | CARISDX - Caris Diagnostics, Inc. | 256 | — | 1 |
| AS395939US | CCHWYO-AS395939 - Campbell County Health | 256 | — | 1 |
| AS402939US | ENCORE-TECHNOLOGIES-IAAS - Encore | 256 | — | 1 |
| AS15049US | TOCO - Tompkins County | 256 | — | 1 |
| AS398988US | NIPCO - Northwest Iowa Power Cooperative | 256 | — | 1 |
| AS401471US | TICKETNETWORK-DC-01 - TicketNetwork Inc. | 256 | — | 1 |
| AS32576US | LOANMART - 1-800LoanMart | 256 | — | 1 |
| AS399813US | LAER-AS-MEL1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS394364US | RD-ASN - Red Diamond, Inc. | 256 | — | 1 |
| AS11688US | LTSTREAM - Lightstream Communications, Inc. | 256 | — | 1 |
| AS16844US | ENTRATA - Entrata | 256 | — | 1 |
| AS547US | ASN-IBM-LEX - IBM | 256 | — | 1 |
| AS32210US | NTE-64-WHQASNUM - NORTHERN TOOL & EQUIPMENT COMPANY, INC. | 256 | — | 1 |
| AS19015US | GREENPATH - GreenPath Inc | 256 | — | 1 |
| AS402019US | JEROME-COUNTY-ID - Jerome County Idaho | 256 | 4.1K | 2 |
| AS397767US | WEISSMAN-THEATRICAL-SUPPLY - Weissman's Theatrical Supplies, Inc. | 256 | — | 1 |
| AS402668US | ONE-FREE-COMPUTER-TRANSIT - One | 256 | 4.1K | 2 |
| AS400682US | DARKDOT - DarkDot Research, Inc. | 256 | 1 | 2 |
| AS394257US | SPRINGFIELDCLINIC - Springfield Clinic, LLP | 256 | — | 1 |
| AS54096US | NYC-DC-01 - Exiger LLC | 256 | — | 1 |
| AS395147US | ODYSSEY-IP - Odyssey Investment Partners, LLC. | 256 | — | 1 |
| AS395728US | PHX-ASN - District Photo, Inc. | 256 | — | 1 |
| AS23070US | VCHS-ORDNE - Valley County Health System | 256 | — | 1 |
| AS21751US | OWL-CREEK-ASSET-MANAGEMENT - Owl Creek Asset Management, L.P. | 256 | — | 1 |
| AS397258US | GTRC-01 - Graton Resort and Casino | 256 | — | 1 |
| AS29855US | SGCORP29855 - Scientific Games, LLC | 256 | — | 1 |
| AS54406US | CONVERMAX - Convermax Corp | 256 | — | 1 |
| AS395448US | APOG-COLO-PA - Apogee Telecom Inc. | 256 | — | 1 |
| AS31850US | MCSAL-31850 - Mission Conversion Services Alliance, LLC | 256 | — | 1 |
| AS36340US | CITY-OF-TOLEDO - City of Toledo | 256 | — | 1 |
| AS46995US | JUMP-WIRELESS - Jump Wireless LLC | 256 | — | 1 |
| AS35866US | SILVER-CHIP - Silver Chip Interactive | 256 | 64 | 2 |
| AS30671US | DATABRIDGE - Data Bridge Limited | 256 | 1 | 2 |
| AS402153US | QUICK-TECH-RESULTS-01 - Quick Tech Results LLC | 256 | 256 | 2 |
| AS394817US | THE-SALVATION-ARMY-USE - The Salvation Army | 256 | — | 1 |
| AS11881US | CNANDC-01 - CNA National Warranty Corporation | 256 | — | 1 |
| AS401962US | CUDDLE-PAWS - CuddlePaws | 256 | — | 1 |
| AS213801US | NATHANMOORE Nathan Moore | 256 | 17 | 3 |