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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. | 218M | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| SIRIUSSATELLITERADIO - SIRIUS SATELLITE RADIO |
| 512 |
| — |
| 1 |
| AS395132US | MWCU - Meriwest Credit Union | 512 | — | 2 |
| AS394149US | VI-CONCEPTS - VI Concepts, Inc. | 512 | 16 | 2 |
| AS30390US | IMERYS-UK-PARMOOR-ASNUMBER - Imerys Pigments | 512 | — | 2 |
| AS396358US | BUBGP1 - Bellarmine University | 512 | — | 2 |
| AS394730US | LEADFUSION - Leadfusion, Inc. | 512 | — | 1 |
| AS398758US | AVONDALE - CITY OF AVONDALE | 512 | — | 2 |
| AS396391US | GUILFORD-COLLEGE - Guilford College | 512 | — | 2 |
| AS401164US | EPS - Elizabeth Board of Education | 512 | 514 | 6 |
| AS399288US | WEATHERTAP - WEATHERTAP INCORPORATED | 512 | — | 2 |
| AS400065US | SCION-BACKBONE - Princeton University | 512 | — | 1 |
| AS394066US | CTC-AS1 - The Chugwater Telephone Company | 512 | — | 2 |
| AS397445US | 1314-DOUGLAS-01 - NATIONAL INDEMNITY COMPANY | 512 | — | 1 |
| AS36589US | BNCBASHQBRNJ - BARNES & NOBLE COLLEGE BOOKSELLERS | 512 | — | 2 |
| AS26761US | CMAL-ECOM - Designs Apparel, Inc. | 512 | — | 2 |
| AS63325US | CARRIAGESERVICESAS - Carriage Services, Inc. | 512 | — | 2 |
| AS54500US | 18779 - EGIHosting | 512 | — | 2 |
| AS400211US | PORT80 - Port 80 | 512 | 65.5K | 3 |
| AS393625US | FNS-ASN - OPTIV SECURITY INC | 512 | — | 2 |
| AS19452US | OAKTREECAP-COM - Oaktree Capital Management, LP | 512 | — | 2 |
| AS397719US | TECHSTYLE-FASHION-GROUP - TechStyle, Inc. | 512 | — | 2 |
| AS36860US | BANCFIRST - BancFirst | 512 | — | 2 |
| AS62494US | YELLOWSTONE-FIBER - UTOPIA | 512 | 1 | 2 |
| AS60154US | connectria-asn-1 Connectria, LLC | 512 | 524.3K | 3 |
| AS36571US | WLWT-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS395126US | BECKS - Beck's Superior Hybrids, Inc. | 512 | — | 2 |
| AS401500US | KARRIER-ONE-01 - Karrier One Inc. | 512 | — | 1 |
| AS20193US | MODTECHGROUP - SineWave Technologies, Inc. | 512 | — | 2 |
| AS22417US | NYCM-FIRE-CO - New York Central Mutual Fire Insurance Company | 512 | — | 2 |
| AS394736US | DAYZIM - The Day & Zimmermann Group, Inc. | 512 | — | 2 |
| AS36851US | DIALINTERNET - DialAmerica Marketing, Inc | 512 | — | 2 |
| AS39983US | PBGC-HQ-AS - Pension Benefit Guaranty Corp. | 512 | — | 2 |
| AS30706US | EAMONTREAL - Electronic Arts, Inc. | 512 | — | 1 |
| AS63417US | GPSF-ASN-01 - Arc Games Inc. | 512 | — | 2 |
| AS54798US | ODDBYTES - Oddbytes LLC | 512 | — | 2 |
| AS40617US | HPE-AI-CLOUD - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 2 |
| AS62628US | ZOOX - Zoox Labs, Inc. | 512 | 3 | 5 |
| AS54986US | FLOWERS - 1-800-Flowers.com, Inc. | 512 | — | 2 |
| AS14337US | CVMIN-AS1 - CVM, INC | 512 | — | 2 |
| AS395915US | ENS - Edge Network Services LLC | 512 | 17 | 4 |
| AS398847US | GTE-FINANCIAL01 - GTE Financial | 512 | — | 2 |
| AS3592US | TRINCOLL-AS - Trinity College | 512 | — | 2 |
| AS26722US | MAIN-SEQUENCE-TECHNOLOGIES - Main Sequence Technology, Inc. | 512 | 3 | 5 |
| AS400961US | LOGISTIVIEW-CLOUD-01 - LogistiVIEW, Inc. | 512 | — | 2 |
| AS397088US | MACC-TECHMGM - Montgomery Area Chamber of Commerce | 512 | 1 | 3 |
| AS18669US | BSEC-CA-1 - Bal Seal Engineering Co. Inc. | 512 | — | 2 |
| AS395257US | SINGULARIS-001 - Singularis IT, LLC | 512 | 65.5K | 3 |