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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS399636US | ITHAKA-AS-AA2 - ITHAKA Harbors, Inc. | 256 | — | 1 |
| AS394718US | HISCOX - Hiscox Insurance Company Inc. | 256 | — | 1 |
| AS398463US | MSUFSD-1-AS - Mount Sinai Union Free School District | 256 | — | 1 |
| AS400172US | RACKORBIT - RackOrbit, LLC | 256 | — | 1 |
| AS19386US | STTX-SPOKANE - Spokane Tribe Telecommunications Exchange, LLC | 256 | — | 1 |
| AS36744US | ELYSIA - Valex Cloud LLC | 256 | 16 | 2 |
| AS396954US | ZSS - The Root Group, Inc. | 256 | — | 1 |
| AS16927US | IHOPKC - IHOPKC | 256 | — | 1 |
| AS20449US | AHS-RANDOLPHHEALTH - Randolph Health | 256 | — | 1 |
| AS393899US | RWLV - RESORTS WORLD LAS VEGAS LLC | 256 | — | 1 |
| AS33609US | WINSTON-BRANDS-INC - Winston Brands, Inc. | 256 | — | 1 |
| AS210659US | RLRISK Rogers and Lynch LLC | 256 | 48 | 4 |
| AS1883US | STUPI STUPI LLC | 256 | — | 1 |
| AS208462US | BISUP COSMIC STORE LLC | 256 | — | 1 |
| AS46727US | FES - FES | 256 | — | 1 |
| AS393548US | ABRIA-AS-01 - AbriaCloud Technologies | 256 | — | 1 |
| AS36553US | BALTIMORE-CITY-POLICE-DEPARTMENT - Baltimore City Police Department | 256 | — | 1 |
| AS21518US | INTEGRIS-HEALTH - Integris Health, Inc. | 256 | — | 1 |
| AS401872US | RMC-836 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS40302US | SPOTSYLVANIA-COUNTY - Spotsylvania County Government | 256 | — | 1 |
| AS15239US | BRA-ASN - Franklin Mutual Insurance Company | 256 | — | 1 |
| AS40677US | GLOBALAIR-COM - Globalair.com | 256 | — | 1 |
| AS40626US | WENTWO-ASN - Wentworth-Douglass Hospital | 256 | — | 1 |
| AS54274US | AS54274 - Henny Penny Corporation | 256 | — | 1 |
| AS36714US | CMG-MORTGAGE - CMG Mortgage, Inc. | 256 | — | 1 |
| AS40492US | PACSEAFOOD - Pacific Seafood Group | 256 | — | 1 |
| AS656US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS397701US | AMOUNT - Amount, LLC | 256 | — | 1 |
| AS396257US | CHURCH-OF-THE-NAZARENE-INC - General Board of The Church of The Nazarene | 256 | — | 1 |
| AS394387US | VUU - Virginia Union University | 256 | — | 1 |
| AS62822US | CENTENARYCOLLEGE - Centenary University | 256 | — | 1 |
| AS46643US | VIRGINIA-COLLEGE-SAVINGS-PLAN - Virginia College Savings Plan | 256 | — | 1 |
| AS208810US | DAVID-LEE-AS David Lee | 256 | — | 1 |
| AS40293US | BENEDICTINE-UNIVERSITY - BENEDICTINE UNIVERSITY | 256 | — | 1 |
| AS55224US | MCS-AS - Marietta City Schools | 256 | — | 1 |
| AS399818US | LAER-AS-DEN1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS33192US | NAIB - National Aquarium in Baltimore | 256 | — | 1 |
| AS400890US | AMTECH-BUSINESS - AMTECH BUSINESS SOLUTIONS. | 256 | — | 1 |
| AS398240US | IDENTIDAD - Identidad Telecom | 256 | — | 1 |
| AS54283US | FCU-IN - FORUM Credit Union | 256 | — | 1 |
| AS30185US | CITY-OF-ROCHESTER-NY - City of Rochester | 256 | — | 1 |
| AS398806US | VIS-2020-01 - Valli Information Systems, Inc | 256 | — | 1 |
| AS401280US | TESRHO - TECH SERVE HOSTING LLC | 256 | — | 1 |
| AS27368US | SOLOCUP-ASN - Solo Cup Company LLC | 256 | — | 1 |
| AS1037US | RBDC-AS-1 - RBDC, Inc. | 256 | — | 1 |
| AS394414US | AS394414 - E2W Solutions LLC | 256 | 32 | 3 |