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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,512 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,281 |
| 18754 - Looksmart Group Inc. |
| — |
| — |
| 0 |
| AS18806US | US-SIGNAL-AZ02 - US Signal Company, L.L.C. | — | — | 0 |
| AS18917US | TIHC-DC3 - TI Intermediate Holdings, LLC | — | — | 0 |
| AS18940US | WLTH-CORP - Wealthfront Corporation | — | — | 0 |
| AS19159US | APL135 - Communications, Land and Real Estate | — | — | 0 |
| AS19222US | LIGHTCREST - Lightcrest LLC | — | — | 0 |
| AS19249US | COREEXPRESS-STLCORP - CoreExpress | — | — | 0 |
| AS19258US | VAIRESORT-PHX - VAI Resorts, LLC | — | — | 0 |
| AS19283US | NETRIX-19283 - Cyber Development Group International, LLC | — | — | 0 |
| AS19288US | SUNGARDAS-19288 - BroadbandONE, LLC | — | — | 0 |
| AS19370US | FDSINC - FDS | — | — | 0 |
| AS19410US | BENTONREA2 - BENTON REA POWERNET | — | — | 0 |
| AS19441US | ARRIS2 - CommScope Technologies LLC. | — | — | 0 |
| AS19457US | RUDIN - Rudin Management Company, Inc. | — | — | 0 |
| AS19548US | TWC-19548-NA - Charter Communications Inc | — | — | 0 |
| AS19550US | SIHOPE-AS - Sihope Communications | — | — | 0 |
| AS19568US | AFFINITYTS - Affinity Technology Solutions LLC | — | — | 0 |
| AS19649US | DATAPIPE-GOV-SOLUTIONS - DataPipe, Inc. | — | — | 0 |
| AS19699US | XO-19698-19699 - Verizon Business | — | — | 0 |
| AS19702US | FITCH-COLO-AS-01 - FITCH INC. | — | — | 0 |
| AS19715US | YOUBET - Churchill Downs Incorporated | — | — | 0 |
| AS19765US | IBM-RC-440ABL - IBM Corporation | — | — | 0 |
| AS19823US | TPAC-SJ-01 - TPx Communications | — | — | 0 |
| AS19824US | TPAC-LV-01 - TPx Communications | — | — | 0 |
| AS20056US | TVFR-COMPUTER-OPERATIONS-CENTER - Tualatin Valley Fire & Rescue | — | — | 0 |
| AS20196US | OGDEN-N - Ogden Newspapers Inc | — | — | 0 |
| AS20328US | COMSPAN-BANDON - Douglas FastNet | — | — | 0 |
| AS20370US | MARCHO-2 - March of Dimes | — | — | 0 |
| AS20447US | KITAUJI-NETWORKS - Kitauji Networks LLC | — | — | 0 |
| AS20456US | RISE-IL-AS20456 - JAB Wireless, INC. | — | — | 0 |
| AS21604US | CHEMONICS-USA - CHEMONICS INTERNATIONAL, INC. | — | — | 0 |
| AS21812US | METAICE - Meta Ice Corporation | — | — | 0 |
| AS21846US | ESC1AS - Region One Education Service Center | — | — | 0 |
| AS21906US | ZOSCLOUD LLC - ZosCloud LLC | — | — | 0 |
| AS21916US | SKYRIVER - Skyriver Communications, Inc. | — | — | 0 |
| AS21926US | TREASUREISLAND-ASN1 - Treasure Island Colocation, LLC | — | — | 0 |
| AS21971US | TRIMBLEMS - TRIMBLE MOBILE SOLUTIONS | — | — | 0 |
| AS21983US | AURORNET - Big | — | — | 0 |
| AS22045US | NYCERS - New York City Employees' Retirement System | — | — | 0 |
| AS22072US | DEFINITYHEALTH - Definity Health | — | — | 0 |
| AS22114US | BMWCHI - BAKER & MCKENZIE CHICAGO LLC | — | — | 0 |
| AS22143US | APPTI-11-TOP001 - Apptio, Inc. | — | — | 0 |
| AS22206US | GOOD-SAM - Evangelical Lutheran Good Samaritan Society | — | — | 0 |
| AS22235US | AIT-MSP-OPS-HOSTING - AccountabillT | — | — | 0 |
| AS22256US | FIRST-SOUTHWEST - First Southwest Company | — | — | 0 |
| AS22374US | REACH4-DUSON - REACH4 Communications | — | — | 0 |
| AS22402US | NEXTCO-AS - Nextera Communications LLC | — | — | 0 |