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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,171 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 3,667 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,368 |
| 512 |
| — |
| 2 |
| AS396533US | NYT-CP - The New York Times Company | 512 | — | 1 |
| AS25748US | CQGNET-CHICAGO - CQG, Inc. | 512 | — | 2 |
| AS14512US | BENTLEY-AS - Bentley University | 512 | — | 1 |
| AS11948US | DEVELOPMENT-GROUP-INC - Development Group, Inc | 512 | — | 2 |
| AS394735US | TABUSH - Tabush Consulting Group, Inc. | 512 | — | 1 |
| AS14881US | NMG-1 - The Neiman Marcus Group LLC | 512 | — | 2 |
| AS394220US | AMWAYCENTER - Orlando Venues | 512 | — | 2 |
| AS397519US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 512 | 2 | 4 |
| AS46330US | LICKINGMEMORIAL-HS - Licking Memorial Hospital | 512 | — | 1 |
| AS395551US | CARHA-ASN - CARHARTT Inc. | 512 | — | 2 |
| AS40146US | RTCONN-LAS - Right Connection, Inc. | 512 | 3 | 5 |
| AS46467US | DISH-NETWORK-LLC - DISH Network L.L.C. | 512 | — | 1 |
| AS401985US | AS-FDML-1 - Family Dollar | 512 | — | 2 |
| AS400782US | HARRIS-COUNTY-PUBLIC-LIBRARY - Harris County Public Library | 512 | — | 1 |
| AS399028US | MEADO-ASN-01 - Meadowbrook, Inc. | 512 | — | 2 |
| AS30413US | BENEFITFOCUS - Benefitfocus.com, Inc. | 512 | — | 2 |
| AS393824US | APOG-LENOIR-RHYNE - Apogee Telecom Inc. | 512 | — | 1 |
| AS40063US | PYRANAH-COMMUNICATIONS - Pyranah Communications, LLC | 512 | — | 1 |
| AS15262US | TSYS-NDC-COPORATE-INTERNET - Global Payments Inc. | 512 | — | 2 |
| AS54357US | FIRST-SOLAR - First Solar, inc. | 512 | — | 2 |
| AS13452US | AS-IL1-DIA - Guggenheim Services LLC | 512 | — | 2 |
| AS395828US | ROAMABILITY - ROAMABILITY LLC | 512 | — | 2 |
| AS401306US | IR - Ingersoll Rand Inc. | 512 | — | 2 |
| AS53901US | BWS-DR-IX-AS - Board of Water Supply | 512 | — | 2 |
| AS62681US | ACME-WIDGET - Acme Widget LP | 512 | 1 | 3 |
| AS8012US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS8012 - The Bank of New York Mellon Corporation | 512 | — | 2 |
| AS39985US | RACKROOM-SHOES - Rack Room Shoes | 512 | — | 2 |
| AS40905US | BGP-INFOSYNC - InfoSync Services | 512 | — | 1 |
| AS16986US | CSM-AS - City of Santa Monica | 512 | — | 2 |
| AS401446US | CVDN - Converted Networks LLC | 512 | 4.1K | 2 |
| AS20383US | EXCHANGEBANK-AS - Exchange Bank | 512 | — | 2 |
| AS14899US | MOBILEXUSA - MobilexUSA | 512 | — | 2 |
| AS54017US | UCARE-MN - UCare Minnesota | 512 | — | 2 |
| AS399144US | SUHSD-INTERNET-2026 - Sequoia Union High School District | 512 | — | 2 |
| AS17209US | NORTHWEST-EVALUATION-ASSOCIATION - HMH | 512 | — | 2 |
| AS19588US | GC-1 - GOR CORPORATION | 512 | — | 2 |
| AS55190US | BLUEFIN-BB - Bluefin Payment Systems LLC | 512 | — | 2 |
| AS18629US | LTF-001 - Life Time, Inc | 512 | — | 2 |
| AS29919US | 29919 - SELECT PORTFOLIO SERVICING INC | 512 | — | 2 |
| AS15354US | AS-BML01 - Morgan, Lewis & Bockius LLP | 512 | — | 2 |
| AS35868US | HERMETEK-AS-01 - HermeTek LLC | 512 | — | 2 |
| AS397742US | NUVISION-TECHNOLOGIES-INC - NUVISION TECHNOLOGIES | 512 | — | 2 |
| AS398888US | RAPIDWIRELESS - Rapid Wireless, LLC | 512 | — | 2 |
| AS399707US | EA-ORLANDO - Electronic Arts, Inc. | 512 | — | 2 |
| AS395259US | KIRKLAND-ELLIS-NY - Kirkland & Ellis LLP | 512 | — | 2 |
| AS53746US | ASBASN - American Savings Bank, FSB | 512 | — | 2 |