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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 | 21,160 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| 4.1K |
| 2 |
| AS14917US | MILTON-CAT - Milton CAT | 256 | — | 1 |
| AS8135US | TROY-UNIVERSITY - Troy University | 256 | — | 1 |
| AS12071US | NATIONWIDECPAS-LLC - Nationwide CPAs LLC | 256 | — | 1 |
| AS33722US | CCCR-AS - Cache Creek Casino Resort | 256 | — | 1 |
| AS32486US | CBSBANK - CB&S Bank, Inc. | 256 | — | 1 |
| AS32683US | WAREHOUSE-DIRECT-OFFICE-PRODUCTS - Warehouse Direct Office Products | 256 | — | 1 |
| AS396531US | ATIMETALS - Allegheny Technologies Incorporated | 256 | — | 1 |
| AS396031US | ATLANTA-CS-1 - 1923327 ONTARIO INC | 256 | 1 | 2 |
| AS395727US | ASN-INTELLIC - Intellicom Computer Consulting, Inc. | 256 | — | 1 |
| AS23120US | LEGACY-OKC-ASN - Legacy | 256 | — | 1 |
| AS32096US | KUB-NET - Knoxville Utilities Board | 256 | — | 1 |
| AS36193US | WALLEYE-TRADING - Walleye Capital LLC | 256 | 1 | 2 |
| AS397871US | COD-PUBLIC-148 - City Of Detroit | 256 | — | 1 |
| AS31900US | CITYOFTHORNTON - City of Thornton | 256 | — | 1 |
| AS398198US | MORAE-GLOBAL-CE - Morae Global | 256 | — | 1 |
| AS394926US | DKM4-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS395882US | POWER-SJ - Power Integrations, INC. | 256 | — | 1 |
| AS402158US | CYBERFOREST-LLC - CyberForest | 256 | — | 1 |
| AS399118US | OPB-MACADAM-01 - Oregon Public Broadcasting | 256 | — | 1 |
| AS4577US | WISPOTO-01 - Wispoto, LLC | 256 | — | 1 |
| AS25990US | OEC-OSH - OEC Graphics | 256 | — | 1 |
| AS400637US | MO-LAGERS-01 - Missouri Local Government Employees Retirement System | 256 | — | 1 |
| AS13372US | FEDERATEDINV - Federated Investors | 256 | — | 1 |
| AS400890US | AMTECH-BUSINESS - AMTECH BUSINESS SOLUTIONS. | 256 | — | 1 |
| AS21953US | TCSL - Time Clock Solutions, LLC | 256 | — | 1 |
| AS32677US | DKMC-BGP-DECATUR-GEORGIA-JUNE2004 - Dekalb Medical Center | 256 | — | 1 |
| AS33469US | EDMUNDS-ASN - EDMUNDS.COM | 256 | — | 1 |
| AS63057US | AXINN - Axinn, Veltrop & Harkrider LLP | 256 | — | 1 |
| AS398359US | FNU-VERSAILLES - Frontier Nursing University | 256 | — | 1 |
| AS397963US | DSD2 - Dallas School District No. 2 | 256 | — | 1 |
| AS19669US | SCS - Steel City Signal | 256 | — | 1 |
| AS1037US | RBDC-AS-1 - RBDC, Inc. | 256 | — | 1 |
| AS11005US | DOWNINGTOWN-AREA-SD - Downingtown Area School District | 256 | — | 1 |
| AS394191US | YPP-NET-KENNER - Your Preferred Printer, LLC | 256 | 1 | 2 |
| AS36151US | ACUOA-NET - The Alta Condominium Unit Owner's Association | 256 | — | 1 |
| AS64275US | EQUINIX-EC-DE - Equinix, Inc. | 256 | — | 1 |
| AS54366US | FCB-ASN-54366-AP - First-Citizens Bank & Trust Company | 256 | — | 1 |
| AS36288US | ASN-IARC - NNSA Information Assurance Response Center (IARC) | 256 | 1 | 2 |
| AS1052US | COEUR-D-ALENE-TRIBE - Coeur d' Alene Tribe | 256 | 65.5K | 2 |
| AS151980US | EAAPPL-AS-AP - Electronic Arts Inc. | 256 | — | 1 |
| AS399190US | FSTRF14226 - Frontier Science and Technology Research Foundation, Inc. | 256 | — | 1 |
| AS10919US | TROYFP - Troy Corporation | 256 | — | 1 |
| AS399830US | APOG-SOUTHGATE - Apogee Telecom Inc. | 256 | 1 | 2 |
| AS5545US | SERVEREL-AS Serverel Inc. | 256 | — | 1 |
| AS21997US | APEXCOVANTAGE-192-74-136 - Apex CoVantage, LLC | 256 | — | 1 |
| AS213154US | DAVIDC David Costantino | 256 | 19 | 5 |