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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 | 24,555 |
| 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 |
| 232 |
| 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 | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 2 |
| AS538US | DNIC-AS-00538 - Headquarters, USAISC | 512 | — | 2 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS14257US | EZ-NET - The Iserv Company, LLC | 512 | — | 2 |
| AS15025US | AS-BARTOW - City of Bartow | 512 | — | 2 |
| AS12259US | EBOCOM - EBOCOM LLC | 512 | 3 | 5 |
| AS401183US | STEGEMEYER-NET - James Stegemeyer, Sole Proprietorship | 512 | 16 | 3 |
| AS26075US | MCUNY-01 - Municipal Credit Union of NY | 512 | — | 2 |
| AS54514US | JFNA - Jewish Federations of North America, Inc. | 512 | — | 2 |
| AS401338US | NYCRE-ALB - NY CREATES | 512 | — | 1 |
| AS398911US | TERABIT-NETWORKS - Terabit Networks | 512 | — | 1 |
| AS21594US | IBSA - Interstate Battery System of America Inc. | 512 | — | 1 |
| AS4966US | CASELLAWASTE - Casella Waste System Inc | 512 | — | 2 |
| AS32833US | SMP-1801 - Standard Motor Products, Inc | 512 | — | 2 |
| AS400421US | AS-SOFTHEON - Softheon, Inc. | 512 | — | 1 |
| AS394127US | ALACRITYSERVICES - Alacrity Services | 512 | — | 2 |
| AS396071US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 512 | 4.1K | 2 |
| AS26414US | AS-DNS4 - Unicycle, LLC | 512 | 4 | 4 |
| AS399525US | RIMROCK-WIRELESS - Rimrock Wireless | 512 | 4.1K | 3 |
| AS19480US | CPL - CHICAGO PUBLIC LIBRARY | 512 | — | 2 |
| AS63371US | 63371 - Lubrizol Additives | 512 | — | 2 |
| AS15276US | ZENDA-ASN - Zenda Telephone | 512 | — | 1 |
| AS402106US | ACDEV - ACDev LLC | 512 | 258 | 5 |
| AS27206US | COSL-01 - City of Sugar Land | 512 | — | 2 |
| AS397616US | CITY-OF-PRESCOTT-AZ - CITY OF PRESCOTT | 512 | — | 2 |
| AS19733US | DCU-LCO1 - Digital Federal Credit Union | 512 | — | 2 |
| AS395702US | FIN-REC1 - Financial Recovery Services, Inc. | 512 | — | 2 |
| AS393302US | SJC-AN - St. John's College | 512 | — | 2 |
| AS467US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 512 | — | 1 |
| AS26036US | KOOTENAIHEALTH - Kootenai Medical Center | 512 | — | 2 |
| AS16896US | NCN - NCN | 512 | — | 2 |
| AS54204US | WVTM-TV - HEARST CORPORATION | 512 | — | 2 |
| AS36766US | KETV-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS46639US | HUGHES-TELEMATICS - Verizon Business | 512 | — | 2 |
| AS14508US | THEMASCHHOFFS - The Maschhoffs, LLC | 512 | — | 2 |
| AS14460US | HORIZON - Horizon Media, Inc. | 512 | — | 2 |
| AS399066US | MMS-PUBLIC-AS01 - Massachusetts Medical Society | 512 | — | 2 |
| AS26161US | TMEIC-A - TMEIC Corporation Americas | 512 | — | 2 |
| AS40360US | PANERA - PANERA BREAD COMPANY | 512 | — | 2 |
| AS399102US | WA-ST-SCHOOL-BLIND - Washington State School for the Blind | 512 | — | 2 |
| AS397488US | NEW-ALBANY-PLAIN-LOCAL-SCHOOLS-AS - New Albany-Plain Local School District | 512 | 4.1K | 3 |
| AS30279US | TUHSD-AS1 - TOLLESON UNION HIGH SCHOOL DISTRICT #214 | 512 | — | 2 |
| AS398837US | HOPE - Hope Enterprise Corporation | 512 | 257 | 4 |
| AS394889US | RNDC-12-AS - REPUBLIC NATIONAL DISTRIBUTING COMPANY | 512 | — | 2 |
| AS400653US | UPENN-WHARTON-SF - University of Pennsylvania | 512 | 1 | 2 |
| AS30707US | YABOIII - YaBoiii | 512 | — | 2 |
| AS398015US | MICRO4ASN - MicroFour, Inc. | 512 | — | 2 |