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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS16937US | PVS-AS - Penske Vehicle Services, Inc. | 256 | — | 1 |
| AS46820US | LRHNET1 - Littleton Regional Hospital | 256 | — | 1 |
| AS18824US | PCCA-HQ - Plains Cotton Cooperative Association | 256 | — | 1 |
| AS398330US | ABERYTHMIC - Aberythmic, LLC | 256 | 16 | 2 |
| AS4923US | AS-SCF-DC - SCF | 256 | — | 1 |
| AS30692US | JACKED - JackedWireless | 256 | — | 1 |
| AS47040US | DELTAPRODUCTS-AS - Delta Products Corporation | 256 | — | 1 |
| AS54558US | HONL-621 - Healthcare Outsourcing Network, L.L.C | 256 | — | 1 |
| AS401873US | STM-014 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS398214US | PHP-ASN - Prominence Health Plan | 256 | — | 1 |
| AS395314US | AECC-SANJUANPOOLS-ASN - American Environmental Container Corp. | 256 | 256 | 2 |
| AS21608US | HCSCNET10 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS32118US | AS-SMARTHEALTH - Smart Practice | 256 | — | 1 |
| AS23540US | CMH-IX - CMH-IX | 256 | — | 1 |
| AS22695US | PLAYGROUND - Playground Global, LLC | 256 | 1 | 2 |
| AS14790US | CAMERON - Cameron Memorial Community Hospital Inc | 256 | — | 1 |
| AS393352US | CITY-OF-LAREDO - CITY OF LAREDO | 256 | — | 1 |
| AS20122US | NOS-NOG2 - NOS Network Operations Group | 256 | — | 1 |
| AS33023US | ADTRAN-2 - Adtran, Inc. | 256 | — | 1 |
| AS7362US | HST-CHRON - Hearst Newspapers, LLC | 256 | — | 1 |
| AS18503US | CTRL-IT-ASN - Concept Imagineering LLC | 256 | — | 1 |
| AS394096US | CAPEREGIONALHEALTHSYSTEM - Cape Regional Medical Center, Inc. | 256 | — | 1 |
| AS397252US | STL-ASN-01 - Summitt Trucking, LLC | 256 | — | 1 |
| AS393367US | SJMC-TCHD-3 - Teton County Hospital District | 256 | — | 1 |
| AS400920US | GRABIEN - Grabien Inc. | 256 | — | 1 |
| AS54421US | WARTBURG-COLLEGE - Wartburg College | 256 | — | 1 |
| AS29956US | WAML-ASN - Waterfall Asset Management, LLC | 256 | — | 1 |
| AS33249US | ZNT-AS-01 - Zurita Network Technologies LLC | 256 | — | 1 |
| AS63379US | MNSCA - Sun Country Airlines | 256 | — | 1 |
| AS19015US | GREENPATH - GreenPath Inc | 256 | — | 1 |
| AS396508US | MICHELS-CORPORATION - Michels Corporation | 256 | — | 1 |
| AS30537US | NUMERICACU - Numerica Credit Union | 256 | — | 1 |
| AS401721US | EVOLUTIONFIBER-US-TX - Evolution Fiber LLC | 256 | 64 | 2 |
| AS54367US | RILIN - State of Rhode Island General Assembly | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS397967US | CIRI-HQ-01 - Cook Inlet Region, Inc. | 256 | — | 1 |
| AS16407US | LINDEN-ADVISORS - Linden Investors LP | 256 | — | 1 |
| AS20387US | SHAKECLOUD - Shake Cloud Inc | 256 | — | 1 |
| AS19253US | SBAINC-AS - SBA, Inc | 256 | — | 1 |
| AS393840US | CAG-AS01 - Chapman Automotive Group | 256 | — | 1 |
| AS29718US | TNEMEC-AS - Tnemec Company Incorporated | 256 | — | 1 |
| AS63403US | AS-AFILIAS-LAX1 - Afilias, Inc. | 256 | 1 | 2 |
| AS397571US | PLEXUSSYSTEMS-DV - ROCKWELL AUTOMATION Inc. | 256 | — | 1 |
| AS394698US | FITCHBURG-STATE-UNIVERSITY - Fitchburg State University | 256 | — | 1 |
| AS12215US | RAVANALLC01 - Right Ascension, Inc. | 256 | — | 1 |
| AS394272US | SP-ASN01 - Servpro Industries, Inc. | 256 | — | 1 |