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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 | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,222 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 | 51.5M | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 256 |
| — |
| 1 |
| AS400364US | DSLD-NET01 - DSLD HOMES, LLC | 256 | — | 1 |
| AS54591US | CEF-DIGITAL-25081 - CEF DIGITAL SYSTEMS | 256 | 258 | 4 |
| AS19745US | OKTA - Okta, Inc. | 256 | 3 | 4 |
| AS46743US | PHILANDER-SMITH-UNIVERSITY-AS - Philander Smith University | 256 | — | 1 |
| AS401484US | ASTERALABS - Astera Labs | 256 | — | 1 |
| AS25622US | TSYS-SDC-CONTACT-CENTER-WFH - Global Payments Inc. | 256 | — | 1 |
| AS395413US | DKM6-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS46782US | GTS-169-ASN-01 - Gabriels Technology Solutions, Inc. | 256 | — | 1 |
| AS40541US | CCS-ASN - Central Credit Services Inc | 256 | — | 1 |
| AS33202US | MOORE-VAN-ALLEN - Moore & Van Allen PLCC | 256 | — | 1 |
| AS55133US | ST-CROIX-CENTRAL-SCHOOL-DISTRICT - St. Croix Central School District | 256 | — | 1 |
| AS3742US | ROCKISLAND2 - Rock Island Communications | 256 | — | 1 |
| AS10920US | JOHN-PAUL-CATHOLIC-UNIVERSITY - John Paul the Great Catholic University | 256 | — | 1 |
| AS62561US | IEHP - Inland Empire Health Plan | 256 | — | 1 |
| AS17247US | TU - The Times Union | 256 | — | 1 |
| AS214388US | Cloudnet-Technologies-LLC Cloudnet Technologies L.L.C. | 256 | — | 1 |
| AS32500US | VESTA - Airbus DS Communications Inc | 256 | — | 1 |
| AS53918US | HHRL-ASN - Host Hotels and Resorts, L.P. | 256 | — | 1 |
| AS16434US | HCM - Hitachi Cable Manchester, INC | 256 | — | 1 |
| AS1622US | NCHAS - NCH Capital Inc. | 256 | — | 1 |
| AS400278US | TFC-ASN-01 - TITLE FINANCIAL CORPORATION | 256 | — | 1 |
| AS400903US | IND-COLO-01 - Genesys Cloud | 256 | 1 | 2 |
| AS401195US | BSO-ASN-01 - Broward Sheriff's Office | 256 | — | 1 |
| AS402937US | SIDEGUIDE - Sideguide | 256 | — | 1 |
| AS893US | NINJA-IX-FOUNDATION-ASN - Ninja-IX Foundation | 256 | 258 | 4 |
| AS395404US | SEAKR - SEAKR Engineering, LLC | 256 | — | 1 |
| AS11605US | FLUIDSOFT-14 - Fluidsoft Incorporated | 256 | — | 1 |
| AS398971US | MORGAN-ASN-EV-3 - Morgan Stanley | 256 | — | 1 |
| AS393287US | ASN-LEASETEAM - LTi Technology Solutions, Inc. | 256 | — | 1 |
| AS32550US | EQUINIX-EC-SE - Equinix, Inc. | 256 | 1 | 2 |
| AS32196US | JLEMDR - Jacobs Levy Equity Management, Inc. | 256 | — | 1 |
| AS394663US | ARTIFICIAL LABS AI USA - Artificial Labs Corp | 256 | — | 1 |
| AS394457US | OMNIMODE - OMNI-MODE TRADE LLC | 256 | 65.5K | 2 |
| AS393305US | G2BRS-NET - G2 | 256 | — | 1 |
| AS54451US | FCWAPUBLIC - Fairfax Water | 256 | — | 1 |
| AS53799US | NAHB1201 - NAHB | 256 | — | 1 |
| AS62469US | PLACEIQ - PLACEIQ, INC. | 256 | — | 1 |
| AS36659US | JWD-AS1 - J&B Wholesale Distributing, Inc. | 256 | — | 1 |
| AS22743US | AS22743 - Corelogic Solutions, LLC | 256 | — | 1 |
| AS62475US | MANH-001 - Manhattan Associates, Inc. | 256 | — | 1 |
| AS40872US | BERNARDS-NETWORK - Bernards | 256 | — | 1 |
| AS398331US | 1FBUSA-PROD - 1st Financial Bank USA | 256 | — | 1 |
| AS23544US | ASN1 - City of Mission Viejo | 256 | — | 1 |
| AS19840US | OAKTREECAP - Oaktree Capital Management, LP | 256 | — | 1 |
| AS30410US | FCSO1-ASN - First Coast Service Options, Inc. | 256 | — | 1 |
| AS395708US | PEARLANDTX - City of Pearland | 256 | — | 1 |