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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 |
| AS17219US | WINGS-NET-2025 - Wings Financial Credit Union | 256 | — | 1 |
| AS6292US | MTAPD-GB - MTAPD | 256 | 2 | 3 |
| AS401950US | BUNDLE-BONE - IPNSIG INC. | 256 | 256 | 2 |
| AS11005US | DOWNINGTOWN-AREA-SD - Downingtown Area School District | 256 | — | 1 |
| AS3660US | BPC-ASN - Berry Global Inc | 256 | — | 1 |
| AS22870US | AS22870 - Syniverse Technologies, LLC | 256 | — | 1 |
| AS36157US | ACER AMERICA CORPORATION - Acer America Corporation | 256 | — | 1 |
| AS218439US | Nutraver-AS NUTRAVER LLC | 256 | — | 1 |
| AS32046US | SULLCROM - SULLCROM | 256 | — | 1 |
| AS400491US | PCEWEST - PCE Systems | 256 | — | 1 |
| AS13655US | AXXESS-NETWORKS - Axxess Networks LLC | 256 | — | 1 |
| AS397100US | JT-GLOBAL-US - ekit | 256 | — | 1 |
| AS10916US | FIRSTVOLUNTEER - First Volunteer Bank | 256 | — | 1 |
| AS398338US | DOLLAR DISCOUNT HOSTING - Dollar Discount Hosting LLC | 256 | 263 | 9 |
| AS25811US | DODI-01 - Diamond Offshore, LLC | 256 | — | 1 |
| AS62718US | SSDCOUGARSNET-SPRINGFIELD-SCHOOL-DISTRICT-DELCO - Springfield School District | 256 | — | 1 |
| AS393673US | JDL-AS-1 - SiteOne Landscape Supply | 256 | — | 1 |
| AS25615US | BBV - Broadband Visions, LLC | 256 | — | 1 |
| AS1627US | TOWNEBANK - TowneBank | 256 | — | 1 |
| AS40275US | SECURITYMETRICS - SecurityMetrics, Inc. | 256 | — | 1 |
| AS397680US | SDPC - The School District of Pickens County, South Carolina | 256 | — | 1 |
| AS396537US | UKFCU - University of Kentucky Federal Credit Union | 256 | — | 1 |
| AS402694US | PRIMARY-ASN-1 - Primary | 256 | — | 1 |
| AS400488US | IZONE-BB-01 - iZone Broadband LLC. | 256 | 65.5K | 2 |
| AS400422US | MODERNTREASURY - Modern Treasury Corp. | 256 | 1 | 2 |
| AS393500US | GERMANTOWNFRIENDSSCHOOL - Germantown Friends School | 256 | — | 1 |
| AS204874US | SAASTACK-LLC SaaStack LLC | 256 | 1 | 2 |
| AS397987US | RBC-DEN1 - RedBaron Consulting, LLC | 256 | — | 1 |
| AS394465US | SUSSEXDE-GOV - Sussex County Government | 256 | — | 1 |
| AS394060US | SEABOARDCORP - SEABOARD CORPORATION | 256 | — | 1 |
| AS401509US | BAYHEALTH-MEDICAL-CENTER-INC - Bayhealth Medical Center, Inc. | 256 | — | 1 |
| AS401414US | TIER2SQUARED - Tier 2 Squared, LLC | 256 | 256 | 2 |
| AS400369US | TALLEYINC - Talley Inc. | 256 | — | 1 |
| AS19309US | WILLIAMSON-MEDICAL-CENTER-AS - Williamson Medical Center | 256 | — | 1 |
| AS23507US | AVSISP - AV SERVICES LLC | 256 | 256 | 2 |
| AS402649US | CITY-OF-LARAMIE - City | 256 | — | 1 |
| AS11678US | DOE-NTS-AS - U.S. Department of Energy | 256 | 65.5K | 2 |
| AS40397US | FIRST-MANHATTAN - First Manhattan Co. | 256 | — | 1 |
| AS401232US | ETECHGS-INDIA - Etech Texas, LLC | 256 | — | 1 |
| AS32031US | BVUSD229 - BLUE VALLEY USD NO 229 | 256 | 1 | 2 |
| AS399577US | SUREFIRE - SureFire Internet, LLC | 256 | 256 | 2 |
| AS395051US | POWDR-CORP - POWDR CORP | 256 | — | 1 |
| AS36038US | SISULINK - sisulink | 256 | — | 1 |
| AS15355US | EISLER-US - Eisler Capital (US) LLC | 256 | — | 1 |
| AS399803US | HOMETOWNWIRELESS-LLC - Hometown Tech, LLC | 256 | — | 1 |
| AS393953US | MERC-AS - Mercantile Bank of Michigan | 256 | — | 1 |