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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 | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 2.6K |
| 34 |
| 44 |
| AS397909US | EGUSD-01 - Elk Grove Unified School District | 2.6K | — | 10 |
| AS11805US | ENNWISE-AS - Ennwise | 2.6K | 2 | 9 |
| AS393294US | MEGATEL-NETCOM - Megatel Netcom Corporation | 2.6K | 257 | 12 |
| AS1858US | DISN-PILOTNET4 - RTX BBN Technologies, Inc. | 2.6K | — | 3 |
| AS20085US | UAKRON - The University of Akron | 2.6K | — | 5 |
| AS402321US | ZENIX-CLOUD-AS2 - Zenix | 2.6K | — | 2 |
| AS6223US | CENTURYLINK-MTIPS1-STN - CenturyLink Communications, LLC | 2.6K | 17 | 5 |
| AS393821US | LISMORE-COOPERATIVE-TELEPHONE - Lismore Cooperative Telephone Company | 2.6K | — | 2 |
| AS396944US | UNFI - UNFI | 2.6K | — | 7 |
| AS400779US | ONTARIONET-01 - OntarioNet | 2.6K | — | 4 |
| AS3576US | AS-HODGSON-RUSS-NET - Hodgson Russ LLP | 2.6K | — | 7 |
| AS20234US | HNTB - HNTB CORPORATION | 2.6K | — | 6 |
| AS13666US | VRIS-AS-BLOCK - Verizon Business | 2.6K | 1 | 10 |
| AS394122US | DEBEVOISE - Debevoise and Plimpton LLP | 2.6K | — | 9 |
| AS32393US | BDN - Brown Dog Networks | 2.6K | — | 4 |
| AS22970US | MAINETECHCOLLEGESYS - Maine Technical College System | 2.6K | — | 10 |
| AS393437US | KLAYER - KLAYER LLC | 2.6K | — | 10 |
| AS26814US | ASN-COBNET - City of Birmingham | 2.6K | — | 2 |
| AS394723US | FCS-AS-1 - Fulton County Schools | 2.6K | — | 3 |
| AS11070US | META-AS - Metanet Communications, Inc. | 2.6K | — | 10 |
| AS18757US | TYCOIS - ADT Security Services, Inc. | 2.6K | — | 10 |
| AS21US | RAND - The RAND Corporation | 2.6K | — | 10 |
| AS40593US | CCSI-AS - Cloud Compliance Solutions | 2.6K | — | 10 |
| AS26492US | VCCCD-NET - VCCCD | 2.6K | — | 10 |
| AS36844US | SAWS---SAN-ANTONIO-WATER-SYSTEM - San Antonio Water System | 2.6K | — | 10 |
| AS402363US | AEJ-01 - KEYSTONE | 2.6K | — | 5 |
| AS25629US | ACPS-8-ASN - Albemarle County Public Schools | 2.6K | — | 6 |
| AS14610US | INTEGRAL - Integral Development Corp. | 2.6K | — | 10 |
| AS11421US | HYWG-BACKBONE - HYW | 2.6K | 68 | 15 |
| AS26787US | NM-01 - Northwestern Mutual Life Insurance Company | 2.6K | 2 | 5 |
| AS21869US | SUN-CHEMICAL - Sun Chemical Corporation | 2.6K | — | 7 |
| AS35895US | CMMG-LTD - CMMG Ltd | 2.6K | 4.1K | 5 |
| AS400342US | EDGENAT-CLOUD - EDGENAT CLOUD | 2.6K | 1.4M | 55 |
| AS33019US | WHEATONCOLLEGE - Wheaton College | 2.6K | — | 3 |
| AS40528US | ICANN-LAX - ICANN | 2.6K | 3 | 7 |
| AS14438US | USA-CHOICE-OIL-CITY - U S A CHOICE INTERNET SERVICES CO. | 2.6K | — | 10 |
| AS10255US | SINISTER - Sinister and Solitary | 2.6K | 257 | 9 |
| AS400902US | WASGN - Gaylord National Resort & Convention Center | 2.6K | — | 3 |
| AS40376US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS40376 - The Bank of New York Mellon Corporation | 2.6K | — | 7 |
| AS22691US | ISPNET-1 - ISPnet, Inc. | 2.6K | — | 8 |
| AS11133US | SORENSON-99 - Sorenson Communications, Inc. | 2.6K | — | 10 |
| AS21691US | TMCC-2 - Toyota Motor Credit Corporation | 2.6K | — | 8 |
| AS402167US | AS-NEBIUS-CENTRAL - Nebius Inc. | 2.6K | 17 | 5 |
| AS25814US | DIGITALC - DigitalC | 2.6K | — | 6 |
| AS30405US | CAIU-NET - Capital Area Intermediate Unit | 2.6K | 4.1K | 11 |
| AS19970US | CARRIERDOMAIN-NYC - R&R Managed Telecom Services | 2.6K | 4.1K | 11 |