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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 768 |
| — |
| 3 |
| AS21512US | UNITYHS-AS - Unity Health System | 768 | — | 3 |
| AS395483US | AAMLIVE-INC - Advisors Asset Management, Inc. | 768 | — | 3 |
| AS22450US | XN-NC-ASN01 - Xobee Networks Inc. | 768 | — | 3 |
| AS63486US | MCCS - HQ USMC NAF Business & Support Services Division (MR) | 768 | — | 3 |
| AS36488US | SWA-INET - Southwest Airlines Co. | 768 | — | 3 |
| AS32957US | AVSL-AS32957 - FactSet Research Systems, Inc. | 768 | — | 3 |
| AS398895US | HBFF-ASN-01 - Hazelden Betty Ford Foundation | 768 | — | 3 |
| AS53720US | SUPERIORTECH - Superior Technology Solutions LLC | 768 | — | 3 |
| AS396299US | THE-IMAGINE-GROUP - The IMAGINE Group, LLC | 768 | — | 3 |
| AS22959US | NOROC - NOROC BROADBAND, LLC | 768 | — | 2 |
| AS36193US | WALLEYE-TRADING - Walleye Capital LLC | 768 | 1 | 4 |
| AS63283US | RL-AS - Red Lobster | 768 | — | 3 |
| AS36336US | NATIXIS - Natixis Advisors, LLC | 768 | — | 3 |
| AS63331US | LBL-2 - Lawrence Berkeley National Laboratory | 768 | 4 | 6 |
| AS395060US | MACMILLAN-PUBLISHERS - Macmillan Publishers Inc | 768 | — | 3 |
| AS19389US | GOLUB - GOLUB CORPORATION | 768 | — | 3 |
| AS211019US | servers-guru Moula World LLC | 768 | 2 | 4 |
| AS401298US | SIPNAV-WEST - SipNav LLC | 768 | 512 | 5 |
| AS393667US | FARSIGHT - Farsight Security, Inc | 768 | 3 | 6 |
| AS16778US | CCHCS-2-ASN-1 - Cook Children's Health Care System | 768 | — | 2 |
| AS402003US | EZGAMEHOST-NET-1 - EZ Game Host, LLC | 768 | 256 | 4 |
| AS54116US | STROM - Strom Holdings LLC | 768 | 1 | 5 |
| AS17320US | CFCU - Coastal Federal Credit Union | 768 | — | 3 |
| AS36345US | PNMABQ-1 - Public Service Company of New Mexico | 768 | 65.5K | 4 |
| AS394316US | ALTRA - Altra Federal Credit Union | 768 | — | 3 |
| AS11124US | FRIEDKIN - Friedkin Companies, Inc. | 768 | — | 3 |
| AS206226US | LITTLEORBIT Little Orbit Inc. | 768 | 32 | 5 |
| AS26255US | OAKTONCOMMUNITYCOLLEGE - Oakton Community College | 768 | — | 3 |
| AS15718US | FL-749-15718 - FROSTWEB LLC | 768 | — | 3 |
| AS36711US | FIRST-ACCEPTANCE-CORP - FIRST ACCEPTANCE INSURANCE COMPANY OF TENNESSEE, INC. | 768 | 16 | 4 |
| AS395760US | MAPCOEXPRESS-DC-1 - MAPCO Express, Inc. | 768 | — | 3 |
| AS15045US | KITTELSON - KITTELSON AND ASSOCIATES, INC. | 768 | — | 3 |
| AS23474US | SPGLOBAL-SNL-ACQUIRED - S&P Global Inc. | 768 | — | 3 |
| AS401884US | MIYA-TELECOM - Miya Telecom LLC | 768 | — | 3 |
| AS397156US | PGEC - RURALBAND | 768 | 4.1K | 4 |
| AS27285US | ADAM-ASN - Oppenheimer Capital/Quest for Value | 768 | — | 2 |
| AS398850US | CHEYNEY-UNIVERSITY-OF-PA - Cheyney University Of Pennsylvania | 768 | — | 2 |
| AS22602US | EXPERIENT-INC - Experient Inc. | 768 | — | 2 |
| AS11160US | COSTAR-SANDIEGO - COSTAR GROUP Inc. | 768 | — | 3 |
| AS396555US | VRSN-AC50-340 - VeriSign Global Registry Services | 768 | 3 | 6 |
| AS399300US | CWL-001 - CONQUEST WIRELESS LLC | 768 | — | 3 |
| AS10511US | COUNTRY-INSURANCE - CC Services, Inc | 768 | — | 3 |
| AS394000US | PRIMENET - Primenet LLC | 768 | — | 2 |
| AS14611US | HARPERCOLLINSPUBLISHERS - HARPER COLLINS PUBLISHERS INC. | 768 | — | 3 |
| AS25966US | COHERENT - Coherent Inc. | 768 | — | 3 |
| AS20381US | CABLELABS-LV - Cable Television Laboratories, Inc. | 768 | 1 | 4 |