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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) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,149 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 256 |
| — |
| 1 |
| AS26845US | CFN - Fleetcor Technologies Operating Company, LLC | 256 | — | 1 |
| AS5635US | GLAXOSMITHKLINE - GlaxoSmithKline | 256 | — | 1 |
| AS25639US | CENTERTECH - The Center for Rural Development, Inc. | 256 | 1 | 2 |
| AS4923US | AS-SCF-DC - SCF | 256 | — | 1 |
| AS46674US | PUB-ASN - City of Grand Rapids | 256 | — | 1 |
| AS14936US | CLOUDHQDATACENTERS - CloudHQ, LLC | 256 | — | 1 |
| AS46245US | NIFCO-ASN-01 - NIFCO America | 256 | — | 1 |
| AS10723US | MGL-40-ASN - Meritage Group LP | 256 | — | 1 |
| AS54495US | BYTESPUR - Bytespur Corporation | 256 | 1 | 2 |
| AS401879US | RACKNODE-AS - RackNode | 256 | 257 | 3 |
| AS402397US | 17SOLUTIONS-LLC - 17 | 256 | 1 | 2 |
| AS394093US | HS-ASN - Hallmark Sweet, INC | 256 | — | 1 |
| AS17142US | THERASOFTONLINE - Therasoft Inc | 256 | — | 1 |
| AS21611US | NET-WSGWIN - Wilson Sporting Goods Co. | 256 | — | 1 |
| AS40791US | COR-ASN - City of Redding | 256 | — | 1 |
| AS62635US | WEBISTICS-HOLDINGS-LTD - VPNWholesaler.com | 256 | — | 1 |
| AS63135US | TABOR-COLLEGE-01 - Tabor College, Inc. | 256 | — | 1 |
| AS1523US | DNIC-ASBLK-01522-01526 - Headquarters, USAISC | 256 | — | 1 |
| AS394555US | APPLIED-SYSTEMS-LAB - APPLIED SYSTEMS, INC | 256 | — | 1 |
| AS32752US | YCST-AS - Young Conaway Stargatt & Taylor, LLP | 256 | — | 1 |
| AS397854US | SARATOGAHOSP - Saratoga Hospital | 256 | — | 1 |
| AS18473US | EC-BACKUP - Spring View Hospital | 256 | — | 1 |
| AS31847US | FAS-181 - Facility Automation Solutions, Inc. | 256 | — | 1 |
| AS16386US | PROGRESSIVEPRODUCE - Progressive Produce Corporation | 256 | — | 1 |
| AS396210US | AAAHC-HQ - Accreditation Association for Ambulatory Health Care, Inc. | 256 | — | 1 |
| AS51095US | E1-EMEA EdgeUno, Inc. | 256 | 16 | 2 |
| AS40213US | TOOELECO - Tooele County | 256 | — | 1 |
| AS26741US | CEMC - CarolinaEast Medical Center | 256 | — | 1 |
| AS14942US | AS14942 - Regional One Health | 256 | — | 1 |
| AS399860US | CRSCHOOLS-1 - CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT | 256 | — | 1 |
| AS402153US | QUICK-TECH-RESULTS-01 - Quick Tech Results LLC | 256 | 256 | 2 |
| AS393712US | DMA-FWA-DC - DMA | 256 | — | 1 |
| AS17243US | BYTENODE-AS - Byte Node LLC | 256 | 1 | 2 |
| AS33577US | RFA-AS - Radio Free Asia | 256 | — | 1 |
| AS17291US | MCMILLIN-SANANTONIO - McMillin Texas Homes, LLC | 256 | — | 1 |
| AS398080US | TELEVISION-CITY-STUDIOS-LLC - Television City Studios, LLC | 256 | — | 1 |
| AS54093US | NORTHERN-LIGHT-MAYO-HOSPITAL - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS14427US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | 4.1K | 3 |
| AS21605US | AHBELO-CORP - DallasNews Corporation | 256 | — | 1 |
| AS402171US | GW-ALB-01 - Glitch Works, LLC | 256 | 1 | 2 |
| AS397190US | WSP-DIGITAL - WSP | 256 | 1 | 2 |
| AS30281US | WASHPOST - Washington Post | 256 | — | 1 |
| AS6141US | GRINNELL-MUTUAL-REINSURANCE-COMPANY - Grinnell Mutual Reinsurance Company | 256 | — | 1 |
| AS22656US | SINE-NOMINE-ASSC - Sine Nomine Associates Inc. | 256 | — | 1 |
| AS32210US | NTE-64-WHQASNUM - NORTHERN TOOL & EQUIPMENT COMPANY, INC. | 256 | — | 1 |
| AS30087US | APCO - Automobile Protection Corporation | 256 | — | 1 |