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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. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 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 | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS23010US | FFHSJ - Fried, Frank, Harris, Shriver & Jacobson LLP | 512 | — | 2 |
| AS36709US | OPTIMA - NP Information Systems | 512 | — | 2 |
| AS40710US | CLC-98-ILLINOIS - College of Lake County | 512 | — | 2 |
| AS46501US | WATCHGUARD-TECHNOLOGIES-INC - WatchGuard Technologies, Inc. | 512 | 1 | 3 |
| AS29769US | AWT-ASN-29769 - Allwire Technologies LLC | 512 | 4.1K | 3 |
| AS25952US | AEAINVESTORS - AEA Investors Inc. | 512 | — | 2 |
| AS400036US | SAC-01 - Seattle Arena Company, LLC | 512 | — | 2 |
| AS396067US | CURRENT-NETWORKS-01 - Current Networks | 512 | 256 | 2 |
| AS53682US | COLO-1 - Ntiva, Inc | 512 | — | 2 |
| AS25770US | SHRM - Society for Human Resource Management | 512 | — | 2 |
| AS22617US | SACCOURT - Superior Court of California, County of Sacramento | 512 | 16 | 3 |
| AS30564US | LSUS - Louisiana State University in Shreveport | 512 | — | 2 |
| AS395942US | PODS-CORP - PODS Enterprises, LLC | 512 | — | 2 |
| AS40618US | SESAME - Sesame Workshop | 512 | — | 2 |
| AS401441US | GOOSEWORKS - Gooseworks LLC | 512 | 4.1K | 2 |
| AS396654US | VRSN-AC50-340 - VeriSign Global Registry Services | 512 | — | 2 |
| AS30704US | WC-1162 - WellSky Corporation | 512 | — | 2 |
| AS40600US | STRIDEBANK-ASN - Stride | 512 | — | 2 |
| AS399929US | MAA-ASN-01 - Mid-America Apartments, L.P. | 512 | — | 2 |
| AS26717US | AS-RPS - Richmond Public Schools | 512 | — | 1 |
| AS36009US | TGNA-KGW - TEGNA Inc. | 512 | — | 2 |
| AS394358US | SECU-1 - State Employees' Credit Union | 512 | — | 2 |
| AS400530US | DCS-01 - Dubuque Community Schools | 512 | — | 2 |
| AS18622US | IVANET-YTO - IBASIS INC. | 512 | — | 2 |
| AS19125US | ROCK-NET - Rockford Corporation | 512 | — | 2 |
| AS21516US | ECH-2 - Ephrata Community Hospital | 512 | — | 2 |
| AS400441US | HYPHA-US1 - WINAC | 512 | — | 2 |
| AS216013US | PAPYRUS-AS Caleb Bonner Trading as Papyrus VIP | 512 | — | 2 |
| AS33377US | FHLBC - Federal Home Loan Bank of Chicago | 512 | — | 2 |
| AS19152US | IBMCCH-TOR - IBM | 512 | — | 2 |
| AS396323US | JCFS - Johnson Controls Federal Systems Inc. | 512 | — | 2 |
| AS394912US | ALL-IN-1 - Act 1 Group, Inc. | 512 | — | 2 |
| AS26714US | NORTHEAST-TEXAS-COMMUNITY-COLLEGE - Northeast Texas Community College | 512 | — | 2 |
| AS401894US | CYBERDELIA-INTENETWORKING-GROUP - /dev/hack | 512 | 256 | 3 |
| AS889US | DVFIBER-VT - Deerfield Valley Communications Union District | 512 | 65.5K | 2 |
| AS401075US | SKY-SPARK - Skyspark Hosting LLC | 512 | 256 | 3 |
| AS402242US | NEVCOFIBER-AS - Nevada County Fiber Inc. | 512 | — | 1 |
| AS22156US | DANANET - Dana Consulting, Inc. | 512 | — | 1 |
| AS394510US | ZITEL-ASN-BLOCK01 - Zitel | 512 | — | 2 |
| AS27369US | SWEDISH - Swedish Covenant Hospital | 512 | — | 2 |
| AS394171US | ONPOINTCCU - OnPoint Community Credit Union | 512 | — | 2 |
| AS30489US | MKPCAP - MKP Capital Management, LLC | 512 | — | 2 |
| AS53581US | IDL-76-53581 - Inland FIber | 512 | — | 2 |
| AS29822US | ARCHER1 - Archer and Greiner | 512 | — | 2 |
| AS54230US | COMMERCIALCOMMUNICATIONSINC - Commercial Communications, Inc. | 512 | — | 2 |
| AS16856US | BLESSING-HEALTH-SYSTEM-AS - Blessing Hospital | 512 | — | 2 |