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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. | 218M | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 1K |
| — |
| 4 |
| AS394922US | CGIFEDERAL - CGI Federal | 1K | — | 4 |
| AS53662US | COLLIER-COUNTY-SHERIFFS-OFFICE - Collier County Sheriff's Office | 1K | — | 1 |
| AS30011US | MESSER-NORTH-AMERICA - Messer North America, Inc. | 1K | — | 4 |
| AS12272US | MEDATA-PROD-AS - Medata Inc. | 1K | — | 4 |
| AS33488US | WATECH-1 - Providence Park Medical Building Group, LLC | 1K | — | 1 |
| AS54776US | WEST-ESSEX - West Essex Regional School District | 1K | — | 4 |
| AS29841US | JACKSON - JACKSON NATIONAL LIFE INSURANCE CO. | 1K | — | 4 |
| AS30231US | ARCADIA - Arcadia University | 1K | — | 4 |
| AS33134US | KTCFV-USA - Kingston Technology Company, Inc. | 1K | — | 4 |
| AS23413US | VM-AW-US - Omnissa, LLC | 1K | — | 4 |
| AS18783US | RDSEC-NET-01 - RD Sec LLC | 1K | 4.1K | 4 |
| AS36480US | BITRISE - Bitrise | 1K | — | 4 |
| AS63398US | TWINRIVERS-USD - Twin Rivers Unified School District | 1K | — | 3 |
| AS27441US | SSN-US - ITRON INC. | 1K | — | 2 |
| AS33673US | NE-AS1 - MCN Online, LLC | 1K | — | 1 |
| AS33625US | CORTEVA - Corteva AgriScience LLC | 1K | — | 3 |
| AS22788US | KATYISD - Katy Independent School District | 1K | — | 3 |
| AS36644US | FVOICE-001 - 4Voice LLC | 1K | — | 4 |
| AS26152US | WXCCE - Cisco Webex LLC | 1K | — | 4 |
| AS33378US | ASN1 - EASTERN BANK | 1K | — | 4 |
| AS26670US | MCISD-AS - Mission CISD | 1K | — | 1 |
| AS6267US | MEGAPATH3-US - GTT Americas, LLC | 1K | — | 4 |
| AS393969US | KALEIDESCAPE-INC - Kaleidescape, Inc. | 1K | — | 4 |
| AS400525US | AM-PRODNET-01 - Audible Magic | 1K | — | 3 |
| AS396354US | SPECTRUMVOIP-ISP-DAL - SpectrumVoIP Inc | 1K | 65.5K | 4 |
| AS896US | FORTLAB - Fortlab | 1K | — | 4 |
| AS13612US | SYSMEX - Sysmex | 1K | — | 1 |
| AS14079US | RTB-ASN-01 - Radio Toolbox, LLC | 1K | 4.1K | 2 |
| AS14645US | AS-CJIS-20 - CJIS-Consortium-20th-Court Administration | 1K | — | 1 |
| AS53519US | CMHC-ASN - Central Maine Medical Family | 1K | — | 4 |
| AS33506US | CPINETWORKS-AS - COMMPUTERCATIONS | 1K | — | 1 |
| AS399998US | TRUCKEE-MEADOWS-INTERNET - CENOS NETWORKS, LLC | 1K | — | 4 |
| AS13892US | BIPERFORMANCE-ASN - BI | 1K | — | 4 |
| AS26337US | OIS1 - Oso Grande IP Services, LLC | 1K | — | 4 |
| AS46588US | CDW-CONFIGS-01 - CDW | 1K | — | 4 |
| AS399656US | ETHX-BIZ - ETHX | 1K | — | 1 |
| AS10554US | WESTERNU-POMONA - WESTERN UNIVERSITY OF HEALTH SCIENCES | 1K | — | 4 |
| AS27313US | SPENCER-STUART - Spencer Stuart | 1K | — | 4 |
| AS40461US | RFIH-NET5 - Retail Finance International Holdings, Inc. | 1K | — | 3 |
| AS39937US | LTECH - LTech Solutions, Ltd. | 1K | 65.5K | 5 |
| AS396056US | EAGLE-TELEPHONE-ASN - EAGLE TELEPHONE SYSTEM INC | 1K | 4.1K | 2 |
| AS398450US | CUSTOMCABLE-FISHERISLAND-2020 - Custom Cable LLLP | 1K | — | 1 |
| AS63136US | SIPRADIUS - SipRadius | 1K | — | 4 |
| AS12233US | CACHE-POWERED-BY-NINJA-IX - Ninja-IX Corporation | 1K | 1 | 5 |
| AS393496US | OMNIHOTELS - OMNI HOTELS MANAGEMENT CORPORATION | 1K | — | 4 |
| AS53948US | ONEIRIC - Oneiric Systems, LLC | 1K | — | 4 |