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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 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 | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS29779US | ETONICT - Eton Infocomm Technology Inc | 256 | — | 1 |
| AS402196US | AJAX - Ajax Networks, LLC | 256 | — | 1 |
| AS395637US | RFKRACING - Roush Fenway Keselowski Racing, LLC | 256 | — | 1 |
| AS399225US | CVI-APAC - CooperVision, Inc. | 256 | — | 1 |
| AS21505US | MMNET - Multi Media LLC | 256 | 2 | 3 |
| AS11755US | ANDREWS-ASN01 - Andrews Distributing Company of North Texas, LLC | 256 | — | 1 |
| AS400017US | AS-CORP-RM-817 - Ruoff Mortgage | 256 | — | 1 |
| AS214127US | JINK-HOSTING Jink Hosting LLC | 256 | — | 1 |
| AS402425US | QLL-AS-001 - QOREXA | 256 | — | 1 |
| AS1650US | CAMBRIDGEMA-PUBLIC-SCHOOLS - Cambridge Public Schools | 256 | — | 1 |
| AS54151US | ABOUNDCU - Abound Credit Union | 256 | — | 1 |
| AS401970US | CASILA-FLOWER - CASILAFLOWER | 256 | — | 1 |
| AS216321US | ZEROAV-EU Zero Attack Vector LLC | 256 | 1K | 10 |
| AS30098US | INFB-ASN - Farm Bureau Insurance | 256 | — | 1 |
| AS15137US | JETPAY-AS - JetPay, LLC | 256 | — | 1 |
| AS394113US | INCCRRA-MAIN - INCCRRA | 256 | — | 1 |
| AS396980US | API-EGVDC-01 - Absolute Performance, Inc. | 256 | — | 1 |
| AS16840US | JETSET-NETWORKS - JetSet Networks | 256 | 65.5K | 2 |
| AS401830US | KEYSTONE-COLLECTIONS-GROUP-01 - Keystone Collections Group | 256 | — | 1 |
| AS27135US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS18781US | ASTRACORE-VENTURES - AstraCore Ventures LLC | 256 | 256 | 2 |
| AS11180US | AS-TIERP-11180 - TierPoint, LLC | 256 | — | 1 |
| AS394640US | TSD409-NET - Tahoma School District No. 409 | 256 | — | 1 |
| AS27490US | AGRACEHOSPICE-MSN-DR - Agrace Hospicecare Inc | 256 | — | 1 |
| AS32295US | DESIGNCOLLECTIVE - Design Collective, Inc. | 256 | — | 1 |
| AS16938US | EXCEL-NET-01 - Excelsior College | 256 | — | 1 |
| AS396179US | SVH-KS-INET-01 - STORMONT-VAIL HEALTHCARE, INC. | 256 | — | 1 |
| AS16554US | CLOUDSOURCE-01 - Cloud Source, Inc. | 256 | 1 | 2 |
| AS402485US | AMCONSULTING - Adam | 256 | 16 | 2 |
| AS32673US | EVERGREEN-TECH-TX - Evergreen Technology Solutions, LLC | 256 | — | 1 |
| AS394175US | 3NG-NET1-MIA - RingLogix LLC | 256 | — | 1 |
| AS21702US | HADDAD - The Haddad Organization Ltd. | 256 | — | 1 |
| AS397045US | DBMGMT-AS1 - D. Brown Management | 256 | 16 | 2 |
| AS26510US | FTCH-HQ-ASN - Fishbeck, Thompson, Carr & Huber, Inc. | 256 | — | 1 |
| AS21800US | AIT-24PLN-ASN - Advanced Integration Technology, LP | 256 | — | 1 |
| AS399716US | ISHIP-CORP - ISHIP, INC. | 256 | — | 1 |
| AS399948US | CCU-LAKEWOOD - Colorado Christian University | 256 | — | 1 |
| AS16676US | BARCHARTCOM - Barchart.com, Inc. | 256 | — | 1 |
| AS393449US | TELTREX-NETWORK - Teltrex LLC | 256 | — | 1 |
| AS397891US | COLUMBUSHOSP-AS-01 - Columbus Community Hospital, Inc. | 256 | — | 1 |
| AS218170US | ChrisTokFYI ChrisTokFYI LLC | 256 | 1 | 2 |
| AS15155US | SOUTHERN-FARM-BUREAU-LIFE-INSURANCE - Southern Farm Bureau Life Insurance Company | 256 | — | 1 |
| AS40569US | AS-HTR - Hosting Tornado LLC | 256 | 256 | 2 |
| AS11460US | ZALECORP - Zale Delaware, Inc. | 256 | — | 1 |
| AS394637US | LIGHTCHANGE - LightChange Technologies | 256 | 1 | 2 |
| AS400669US | RELIABLE-ISP-01 - ReliableNetwerks, Inc. | 256 | 65.5K | 2 |