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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 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 | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| — |
| — |
| 0 |
| AS46163US | MOODYS - Moody's Corp. | — | — | 0 |
| AS46310US | TSRI-FL-AS - The Scripps Research Institute | — | — | 0 |
| AS46343US | ALKIRA-PUBLIC-ASN - Alkira Inc | — | — | 0 |
| AS46395US | WEEDEN-GRN - Piper Sandler Companies | — | — | 0 |
| AS46509US | INTERACTIVE-BROKERS-GOP - Interactive Brokers LLC | — | — | 0 |
| AS46615US | EPIC-1-46615 - EPIC Consolidated Operations, LLC | — | — | 0 |
| AS46660US | WINSONIC - WinSonic Digital Cable Systems Network, Ltd. | — | — | 0 |
| AS46715US | ENERGYNET-COM - EnergyNet.com, Inc. | — | — | 0 |
| AS46823US | NEUSTAR-DENVER - NeuStar, Inc. | — | — | 0 |
| AS46909US | PHILADELPHIAFCU - Philadelphia Federal Credit Union | — | — | 0 |
| AS46929US | GABBIT-EAST-ALB - Gabbit, LLC | — | — | 0 |
| AS46981US | OPAQ-2 - OPAQ Networks, Inc. | — | — | 0 |
| AS47008US | SKYLO-TECH - Skylo Technologies Inc. | — | — | 0 |
| AS47012US | TASER-VIRTUAL-SYSTEMS - Taser International, Inc. | — | — | 0 |
| AS47048US | VIVUSAS - Vivus, Inc. | — | — | 0 |
| AS53272US | NAISMC-AS-SAIC - SAIC | — | — | 0 |
| AS53279US | MILFORDSDASN - Milford | — | — | 0 |
| AS53379US | ACOUSTIC-ATL-CORP - Acoustic, L.P. | — | — | 0 |
| AS53391US | STARV-NET - GTT Americas, LLC | — | — | 0 |
| AS53447US | PIX-ESD1 - X2X, LLC | — | — | 0 |
| AS53537US | ISG-AS001 - Cloudsmart | — | — | 0 |
| AS53540US | PRODEGE-LA - Prodege LLC | — | — | 0 |
| AS53545US | KENTUCKY-AOC - Administrative Office of the Courts | — | — | 0 |
| AS53576US | CALVERTHOSP - CalvertHealth Medical Center | — | — | 0 |
| AS53774US | SHOPMAS-1 - Shopmetrics, Inc | — | — | 0 |
| AS53788US | BBOX - Blue Box Systems | — | — | 0 |
| AS53815US | INTELIUS - PeopleConnect, Inc. | — | — | 0 |
| AS53853US | JAMA-ASN - Jama Software, Inc. | — | — | 0 |
| AS53967US | EAW-ASN - Education At Work | — | — | 0 |
| AS54094US | AS-RELIABLE - The Constant Company, LLC | — | — | 0 |
| AS54101US | NOBULL-ASN - Earnhardt Management Company | — | — | 0 |
| AS54136US | AS-ASN-6 - Nasdaq, Inc. | — | — | 0 |
| AS54211US | ABACUS-NY - Abacus Group LLC | — | — | 0 |
| AS54404US | EL-ORLANDO-FL - Ellucian Company LP | — | — | 0 |
| AS54416US | NOVA86-ANYCAST - Nova86 | — | — | 0 |
| AS54586US | RBSLYNK-AS5 - Fidelity National Information Services, Inc. | — | — | 0 |
| AS54627US | SWEETWATER-TV - Sweetwater Television Company | — | — | 0 |
| AS54688US | THRES - THRESHOLD COMMUNICATIONS,INC. | — | — | 0 |
| AS54741US | RUNBECK-CIRCUIT-1 - Runbeck Graphics , Inc. | — | — | 0 |
| AS54880US | ALTISCALE-PUBLIC - SAP America Inc. | — | — | 0 |
| AS54948US | SDSA - Samsung SDS America, Inc. | — | — | 0 |
| AS54972US | ACOMMUNCATIONS - A Communications South Mountain LLC | — | — | 0 |
| AS55070US | IMPREZZIO-KRK - Imprezzio Inc | — | — | 0 |
| AS55110US | AUCTION-PROD - Auction.com, LLC | — | — | 0 |
| AS55233US | GYRODATAINC - Gyrodata Incorporated | — | — | 0 |
| AS57974US | TERACAST-NETWORKS - Teracast Networks LLC | — | — | 0 |