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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,129 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,664 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,947 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,375 |
| 768 |
| — |
| 3 |
| AS33504US | FNBP-2-HERM - FIRST NATIONAL BANK OF PA | 768 | — | 3 |
| AS399594US | BLUESPRING-01 - Blue Spring Broadband | 768 | — | 3 |
| AS18707US | INTELEMEDIA - Intelemedia Communications, Inc | 768 | — | 3 |
| AS14306US | GLAXOSMITHKLINE - GlaxoSmithKline | 768 | — | 3 |
| AS14643US | ACOSTA-ASN-01 - Acosta Sales & Marketing | 768 | — | 2 |
| AS399939US | BHE-GTS - BHE GT&S, LLC | 768 | — | 3 |
| AS54949US | NYS-SENATE - New York State Senate | 768 | — | 2 |
| AS36579US | WESH-TV - Hearst-Argyle Television, Inc. | 768 | — | 3 |
| AS14473US | I3ASN1-200E - Inside The Internet, Inc | 768 | — | 2 |
| AS12142US | SULLIVAN-CROMWELL - SULLCROM | 768 | — | 3 |
| AS396527US | MIT-PUBWIFI - Massachusetts Institute of Technology | 768 | — | 3 |
| AS7741US | CIBC-WORLD-MARKETS - CIBC World Markets | 768 | — | 3 |
| AS396209US | AS-EP-01-PHL - Enclara Pharmacia, Inc. | 768 | — | 3 |
| AS26805US | FHLBSF - Federal Home Loan Bank of San Francisco | 768 | — | 3 |
| AS59993US | UILLLC-20230328 UNLIMITED IS LIMITED, LLC | 768 | 65.5K | 4 |
| AS36752US | YAHOO-SP1 - Yahoo Holdings Inc. | 768 | 1 | 4 |
| AS22961US | ATHERAL - Atheral LLC | 768 | — | 3 |
| AS807US | FORKSYSTEMS - FORK SYSTEMS | 768 | 1 | 4 |
| AS31759US | LARABIDA - La Rabida Hospital | 768 | — | 3 |
| AS23095US | SHARP - SHARP HealthCare | 768 | — | 3 |
| AS18489US | VTLA - NTT Global Networks Incorporated | 768 | — | 3 |
| AS21711US | MAXTEL-USA-01 - Maxtel USA Corp | 768 | — | 3 |
| AS62607US | JUNONET - Juno Networks | 768 | — | 3 |
| AS63345US | DKM1-ARIN - The Reynolds and Reynolds Company | 768 | — | 3 |
| AS20466US | WGBH-EDUCATIONAL-FOUNDATION - WGBH Educational Foundation | 768 | — | 2 |
| AS398927US | FRANCIS-TUTTLE-TECHNOLOGY-CENTER - Francis Tuttle Technology Center School District #21 | 768 | — | 3 |
| AS33596US | BRUNSWICKCORPORATION - Brunswick Corporation | 768 | — | 3 |
| AS399103US | SPRY-WIRELESS-02 - Spry Wireless Communications Inc | 768 | — | 2 |
| AS30312US | NETGATE - Netgate | 768 | 17 | 5 |
| AS33328US | NORTON-HEALTHCARE - Norton Healthcare | 768 | — | 3 |
| AS209006US | WEBAIR-INTERNET-FRANCE WEBAIR INTERNET DEVELOPMENT COMPANY LLC | 768 | — | 2 |
| AS17215US | AMEREN-AS3 - Ameren Corp. | 768 | — | 3 |
| AS54131US | OKLAHOMA-HEART-HOSPITAL - Oklahoma Heart Hospital, LLC | 768 | — | 3 |
| AS54268US | CAPITALHEALTH - Capital Health System, Inc | 768 | — | 3 |
| AS17320US | CFCU - Coastal Federal Credit Union | 768 | — | 3 |
| AS897US | TURTLE-ROCK-STUDIOS - Turtle Rock Studios, Inc. | 768 | 4 | 7 |
| AS924US | CLOUDIE - Cloudie Networks LLC | 768 | 4.9K | 7 |
| AS36345US | PNMABQ-1 - Public Service Company of New Mexico | 768 | 65.5K | 4 |
| AS54926US | THRIVE-CAN3 - Thrive Operations, LLC | 768 | — | 2 |
| AS393342US | EA-ASHBURN - Electronic Arts, Inc. | 768 | — | 2 |
| AS62804US | BITSHELTER-NYC - PhotoShelter, Inc. | 768 | — | 2 |
| AS395483US | AAMLIVE-INC - Advisors Asset Management, Inc. | 768 | — | 3 |
| AS15346US | ENOVA-HLR - Enova International, Inc. | 768 | — | 2 |
| AS22310US | LOI - LIFE Outreach International | 768 | — | 3 |
| AS22557US | IDENTITYDIGITAL - Identity Digital Inc. | 768 | — | 3 |
| AS13426US | JUNO-DC-2 - Juno Online Services, Inc. | 768 | — | 3 |