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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 528 |
| — |
| 3 |
| AS395351US | AG-1 - Advisor Group, Inc. | 544 | — | 3 |
| AS11317US | GPN - Great Plains Network | 544 | 64 | 3 |
| AS14252US | SCHOOLSPECIALTY - School Specialty, Inc. | 544 | — | 3 |
| AS25895US | HART-AS1 - HART | 576 | — | 4 |
| AS18718US | MARVELL - Marvell Semiconductor Inc. | 576 | — | 4 |
| AS396155US | COA - City of Arlington | 640 | — | 3 |
| AS23459US | APPLEBEE-NETWORKS - applebee | 640 | 3 | 6 |
| AS53719US | MAINSTREAM-TECHNOLOGIES-LRDC - Mainstream Technologies, Inc. | 640 | — | 3 |
| AS399450US | ADVANCIAL-ASN01 - ADVANCIAL FEDERAL CREDIT UNION | 704 | — | 4 |
| AS902US | SPACECOASTCREDITUNIONMAIN - SPACE COAST CREDIT UNION | 768 | — | 3 |
| AS32410US | HMSTEINSGRP - Homesite Group Inc | 768 | — | 3 |
| AS40175US | HEALTHSOUTH - Encompass Health Corporation | 768 | — | 3 |
| AS17301US | FASTENAL - Fastenal Company | 768 | — | 2 |
| AS23112US | FLUIDSTACK-NET - Fluidstack Inc | 768 | 65.5K | 7 |
| AS26343US | SPT-ASN-001 - Global Payments Inc. | 768 | — | 3 |
| AS15327US | EPS-ECS - EPS US, LLC | 768 | — | 3 |
| AS398301US | ARH-ORG - Appalachian Regional Healthcare, Inc. | 768 | — | 3 |
| AS23514US | QUANTLAB - QUANTLAB FINANCIAL LLC | 768 | — | 3 |
| AS20040US | WESTERNAND-SOUTHERN-FINANCIAL-GROUP - Western & Southern Financial Group Inc. | 768 | — | 3 |
| AS14475US | D4-NETW - D4 Networks L.L.C. | 768 | 3 | 6 |
| AS398152US | ASN-CW-1 - Choice Wireless | 768 | — | 3 |
| AS11066US | XPO LOGISTICS - XPO LOGISTICS INC | 768 | — | 3 |
| AS401305US | NIL - NIL Investment Link LLC | 768 | — | 3 |
| AS400885US | OPTNET - Optimus Communications | 768 | — | 3 |
| AS32053US | SULLCROM - SULLCROM | 768 | — | 3 |
| AS394794US | COVE-2ND - Covenant Health | 768 | — | 3 |
| AS396497US | CENTRETECH-AS-1 - Centre Technologies, Inc. | 768 | — | 3 |
| AS16756US | ABCV16756 - ABC Virtual Communications, Inc. | 768 | — | 3 |
| AS397804US | LDTUS-01 - Lighthouse Document Technologies, Inc | 768 | — | 3 |
| AS5052US | DNIC-AS-05052 - United States Department of Defense (DoD) | 768 | — | 3 |
| AS31824US | HF-MANAGEMENT-SERVICES-LLC - HF Management Services, LLC | 768 | — | 3 |
| AS18849US | RICHESIN-ENG - Richesin Engineering, LLC | 768 | 65.5K | 3 |
| AS33024US | HWS - Harvard-Westlake School | 768 | 19 | 7 |
| AS397994US | XACTLY-01 - Xactly Corporation | 768 | 3 | 6 |
| AS46496US | WTNC-INTERNAL-ISP - Washoe Tribe of Nevada and California | 768 | — | 3 |
| AS17244US | MCNEESE - McNeese State University | 768 | — | 3 |
| AS46109US | ARDENT-NETWORKS - Ardent Wireless, LLC | 768 | 4 | 7 |
| AS400829US | HCDL-SAN-ANTONIO-DATA-CENTER - H5 Data Centers | 768 | 4.1K | 4 |
| AS63130US | NATIONAL-LOUIS-UNIVERSITY - National-Louis University | 768 | — | 3 |
| AS20421US | FLEXB-ASN - First Technology Federal Credit Union | 768 | — | 3 |
| AS12242US | NEL-ASN - Nodal Exchange, LLC | 768 | — | 2 |
| AS12144US | CLOUD-GRID - Cloud Grid Networks | 768 | — | 3 |
| AS394597US | HCDL-NEW-JERSEY-DATA-CENTER - H5 Data Centers | 768 | — | 3 |
| AS395291US | SC-CORE - Snapchat, Inc | 768 | — | 3 |
| AS393585US | HSI-WST-28500 - Hyland Software, Inc. | 768 | — | 3 |
| AS21537US | ENC-01 - Midland Credit Management, Inc. | 768 | — | 3 |