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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| 256 |
| — |
| 1 |
| AS5761US | MICROSOFT-CORP-MSN-AS-SATURN - Microsoft Corporation | 256 | 1 | 2 |
| AS23130US | DPS-AS-01 - Diamond Pharmacy Services | 256 | — | 1 |
| AS393314US | ORACLE-BYOASN - Oracle Corporation | 256 | — | 1 |
| AS394526US | ADVOCAREAS1 - AdvoCare International, L.P. | 256 | — | 1 |
| AS398057US | MP-NETWORKS-ASN - MP Networks, LLC | 256 | — | 1 |
| AS395413US | DKM6-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS402261US | MWH-ASN-01 - Midwest Hose & Specialty | 256 | — | 1 |
| AS31928US | JOHNSON-ENGINEERING - Johnson Engineering, Inc. | 256 | — | 1 |
| AS33280US | AS-AFILIAS-MIA2 - Afilias, Inc. | 256 | 1 | 2 |
| AS27590US | HMSRACING - Hendrick Motorsports | 256 | — | 1 |
| AS400093US | DCS-JACKSON-02 - Direct Customer Solutions, LLC | 256 | — | 1 |
| AS32607US | CANACCORD-GENUITY - Canaccord Genuity LLC | 256 | — | 1 |
| AS398408US | RIVHS-01 - RIVERSIDE HEALTH SYSTEM | 256 | — | 1 |
| AS63294US | DFTMAIN - DigitalFilm Tree LLC | 256 | 65.5K | 2 |
| AS3730US | AQUINA-001 - Aquinas College | 256 | — | 1 |
| AS53915US | SEI - SECURITY EQUIPMENT INC | 256 | — | 1 |
| AS63118US | BGP-LATHAM - New York State United Teachers | 256 | — | 1 |
| AS23267US | QUIKNET-QN-01 - Quik Net LLC | 256 | — | 1 |
| AS396458US | CMM-ATL - CoverMyMeds LLC | 256 | — | 1 |
| AS46850US | MILKCAT - MilkCat Networks LLC | 256 | — | 1 |
| AS400096US | PIKES-PEAK-REGIONAL-BUILDING-80910 - Pikes Peak Regional Building Department | 256 | — | 1 |
| AS32943US | WEB-OF-NEVADA-01 - Web of Nevada | 256 | 256 | 2 |
| AS63225US | CARRIERX-CH-02 - FreeConferenceCall.com | 256 | — | 1 |
| AS63413US | EROOOM - eRoom Securities LLC | 256 | — | 1 |
| AS63261US | GHCO-DCA - Graham Holdings Company | 256 | — | 1 |
| AS398730US | SMARTPATH - SmartPath Technology, LLC | 256 | 256 | 2 |
| AS13975US | NYCPM - NYCPM | 256 | — | 1 |
| AS395389US | LIFEPOINTHEALTH - LEGACY LIFEPOINT HEALTH, LLC | 256 | — | 1 |
| AS46761US | SHORELAND - Shoreland, Inc. | 256 | — | 1 |
| AS13844US | SJRH - St. John's Riverside Hospital | 256 | — | 1 |
| AS54722US | BMOS - Museum of Science | 256 | — | 1 |
| AS18524US | SAM-MEMPHIS - SOUTHEASTERN ASSET MANAGEMENT, INC. | 256 | — | 1 |
| AS396372US | GPHEALTH - Great Plains Health | 256 | — | 1 |
| AS26846US | NAZARETH-COLLEGE - Nazareth College of Rochester | 256 | — | 1 |
| AS394246US | VALOR-COMMUNICATION-INC-INDUSTRY - VALOR COMMUNICATION, INC. | 256 | — | 1 |
| AS396175US | PSC - PEGASUS SOLUTIONS COMPANIES | 256 | — | 1 |
| AS396235US | TODFL - Town of Davie | 256 | — | 1 |
| AS21746US | MANCON-COX-CAVALIER-FAILOVER - Mancon | 256 | — | 1 |
| AS396967US | TOWNSHIP-OF-WOODBRIDGE - Township of Woodbridge | 256 | — | 1 |
| AS401040US | LEGGETT-PLATT-INCORPORATED - Leggett & Platt, Incorporated | 256 | — | 1 |
| AS25738US | HERZING-UNIVERSITY - Herzing INC | 256 | — | 1 |
| AS398319US | ANMISA-LLC - Aaron N Martin ISA LLC | 256 | 256 | 2 |
| AS33071US | ISC-F-AS - Internet Systems Consortium, Inc. | 256 | 1 | 2 |
| AS36799US | CUBIC-AS - Cubic Corporation | 256 | — | 1 |
| AS27644US | THREATSTOP - ThreatSTOP | 256 | 18 | 4 |
| AS32092US | AAI-BLI-AS - Altair Advanced Industries | 256 | — | 1 |