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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. | 218.2M | 25,924 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,232 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 | 51.6M | 3,897 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,005 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| — |
| 1 |
| AS18958US | SSI-AS-01 - THE SSI GROUP, LLC. | 512 | — | 2 |
| AS401459US | AS-UADA - Division of Agriculture of the University of Arkansas | 512 | — | 2 |
| AS112US | AS112-PROJECT - DNS-OARC | 512 | 2 | 4 |
| AS401763US | BLUEPULSENETWORKSLLC - Blue Pulse Networks LLC | 512 | 4.1K | 3 |
| AS53578US | DISNEY-WDAS-AS - Disney Worldwide Services, Inc. | 512 | — | 2 |
| AS1803US | COGENT-1803 - Cogent Communications, LLC | 512 | — | 2 |
| AS40490US | AS-AFILIAS-CTRL2 - Afilias, Inc. | 512 | 1 | 3 |
| AS395454US | KUKUI-NET1 - Kukui | 512 | — | 1 |
| AS27479US | LNSP - Lake Norman Security Patrol, Inc. | 512 | — | 2 |
| AS53444US | ZSCALER-SJC - ZSCALER, INC. | 512 | — | 2 |
| AS394975US | SFHEALTHPLAN - San Francisco Health Plan | 512 | — | 2 |
| AS23156US | VG-NET-01 - The Vincit Group | 512 | — | 2 |
| AS62733US | SOLANOCOUNTY - Solano County | 512 | — | 2 |
| AS11765US | NETSURION-LLC-AS11765 - Netsurion LLC | 512 | — | 1 |
| AS46739US | COLPIPE-EXT - Colonial Pipeline Company | 512 | — | 1 |
| AS22156US | DANANET - Dana Consulting, Inc. | 512 | — | 1 |
| AS400828US | HCDL-ATLANTA-DATA-CENTER - H5 Data Centers | 512 | 4.1K | 3 |
| AS46695US | REGENT-ASN1 - Regent University | 512 | — | 2 |
| AS1383US | ANSBB-ASNNET-2 - Verizon Business | 512 | — | 1 |
| AS15326US | HIGHERSPEED - Higherspeed Internet | 512 | 4.1K | 3 |
| AS401855US | FTOP - Maximize Marketing Agency, Inc. | 512 | — | 2 |
| AS32579US | CITY-OF-VALLEJO - City of Vallejo, A municipal corporation | 512 | — | 2 |
| AS400349US | BOLD-HOWARDU - Apogee Telecom Inc. | 512 | — | 1 |
| AS401081US | OPENINFRA-FL - Open Infra Inc. | 512 | — | 2 |
| AS36298US | INFOCISION - InfoCision Management Corporation | 512 | — | 2 |
| AS30403US | EL-ROCHESTER-NY - Ellucian Company LP | 512 | — | 2 |
| AS394260US | MCICS-394260 - Verizon | 512 | — | 2 |
| AS396395US | ALLIANTINSURANCE - Alliant Insurance Services, Inc. | 512 | — | 2 |
| AS399524US | SOUNDLINE-01 - SoundLine Communications | 512 | — | 2 |
| AS399619US | BACKCOUNTRY-BROADBAND - Backcountry Broadband LLC | 512 | 4.6K | 12 |
| AS19152US | IBMCCH-TOR - IBM | 512 | — | 2 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS399488US | DSB - Demotte State Bank | 512 | — | 2 |
| AS393888US | SQUAR-12-AS-1 - SQUARETRADE, INC. | 512 | — | 2 |
| AS401587US | TEXTNOW-CUST-01 - TextNow Inc. | 512 | 514 | 6 |
| AS53846US | UNITI-FIBER-VOICE - Uniti Fiber Holdings Inc. | 512 | — | 2 |
| AS16898US | LOG-NET - LOG-NET, INC. | 512 | — | 2 |
| AS54930US | TIER2-TECHNOLOGIES - Tier2 Technologies | 512 | 256 | 3 |
| AS40350US | KEYCOOP - Key Cooperative | 512 | — | 2 |
| AS63165US | CCPS-17ASN - Clayton County Public Schools | 512 | — | 2 |
| AS11789US | SURFAIRWIRELESS-IN-03 - Surf Air Wireless, LLC | 512 | — | 1 |
| AS401075US | SKY-SPARK - Skyspark Hosting LLC | 512 | 256 | 3 |
| AS396359US | MASCOCABINETRY - Cabinetworks Group Michigan, LLC | 512 | — | 2 |
| AS32109US | REDDOTNET-USA - Reddot Networks Inc. | 512 | 4.1K | 3 |
| AS46623US | FISHBACK - Fishback Financial Corporation | 512 | — | 2 |
| AS27226US | HARBOURVEST - Harbourvest Partners, LLC | 512 | — | 2 |