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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| 17 |
| 3 |
| AS40453US | GRESHAM-NET - City of Gresham | 256 | — | 1 |
| AS395274US | LAKE-TRAVIS-ISD - Lake Travis ISD | 256 | — | 1 |
| AS36401US | SHM-5224 - Information Management | 256 | — | 1 |
| AS18695US | BMMI-WCADMIN-01 - Bay Medical Management, LLC | 256 | — | 1 |
| AS19865US | ICARZ - Icarz, Inc | 256 | — | 1 |
| AS401002US | NM-NOC-CONN-01 - Bridgers & Paxton Consulting Engineers, Inc. | 256 | — | 1 |
| AS395694US | GSO-INTERNET - Qorvo US, Inc | 256 | — | 1 |
| AS398921US | OVERDRIVE-ASN-01 - OverDrive, Inc. | 256 | — | 1 |
| AS401657US | PHMV-AS-1 - DuBois Regional Medical Center | 256 | — | 1 |
| AS54693US | AS24950 - AlphaSimplex Group, LLC | 256 | — | 1 |
| AS401779US | AAROBAND - AaroBand, Inc. | 256 | 4.1K | 2 |
| AS401297US | IGLOO - June Slater | 256 | 1 | 2 |
| AS2909US | CITI2 - Citigroup Inc. | 256 | — | 1 |
| AS397105US | UHS-AS-01 - United Health Services Hospitals, Inc. | 256 | — | 1 |
| AS400722US | SGP-NIDR - PIMCO | 256 | — | 1 |
| AS402818US | VENICE-NET-1 - Venice.ai | 256 | — | 1 |
| AS396867US | ASN-KINGSWAY-01 - Kingsway Regional School District | 256 | — | 1 |
| AS14035US | KATTEN-MUCHIN-ROSENMAN-LLP - KATTEN MUCHIN ROSENMAN LLP | 256 | — | 1 |
| AS12225US | CONSUMERINFO1 - Consumerinfo.com, Inc. | 256 | — | 1 |
| AS205811US | sfm-pop Supply Frame, Inc. | 256 | — | 1 |
| AS401684US | RSM22 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS54297US | SRS-AS - Savannah River Site | 256 | 1 | 2 |
| AS400490US | TWO-BIT-HACKS - Two Bit Hacks, LLC | 256 | 1 | 2 |
| AS7932US | NUMERIX - Numerix | 256 | — | 1 |
| AS54991US | CADENCE-BANK-BHM - Cadence Bank, N.A. | 256 | — | 1 |
| AS402586US | COMMURE-USA - Commure | 256 | 2 | 3 |
| AS395116US | AVH-1600-WEST - Antelope Valley Healthcare District | 256 | — | 1 |
| AS402339US | DISASTERTRIDENT-NETWORKS - DisasterTrident | 256 | 1 | 2 |
| AS13699US | SWFLAFC - SWF Associates in Podiatric Medicine & Surgery | 256 | 1 | 2 |
| AS398114US | MOSS-ADAMS-ASN01 - MOSS ADAMS, LLP | 256 | — | 1 |
| AS401252US | TOMBALLISD - Tomball Independent School District | 256 | — | 1 |
| AS36719US | MMU-53-AS-NET - Mount Mercy University | 256 | 1 | 2 |
| AS53925US | CBWE-COMM-IMDCPHX1 - CBWE Communications, LLC | 256 | — | 1 |
| AS54669US | LARIMER-ASN - Larimer County Government | 256 | — | 1 |
| AS402735US | HOMENETWORKS-01 - Home | 256 | — | 1 |
| AS47098US | SAMPSON COUNTY SCHOOLS - Sampson County Schools | 256 | — | 1 |
| AS54946US | MH105-METRO-HEALTH-HOSPITAL - Metro Health | 256 | — | 1 |
| AS26093US | HAR - Houston Association of Realtors | 256 | — | 1 |
| AS402744US | GSA-NET-01 - GRC | 256 | — | 1 |
| AS1861US | DISN-PILOTNET7 - RTX BBN Technologies, Inc. | 256 | — | 1 |
| AS395619US | THE-COLLEGE-OF-THE-FLORIDA-KEYS - The College of Florida Keys | 256 | — | 1 |
| AS36115US | AS-DCPA - Denver Center for the Performing Arts | 256 | — | 1 |
| AS22899US | UMICO - Utica Mutual Insurance Company | 256 | — | 1 |
| AS396322US | PC-ASN - Peace Corps | 256 | 516 | 7 |
| AS397959US | ADTELL-SHIP-01 - Adtell Integration | 256 | — | 1 |
| AS397462US | CSPI-MSP-1 - CSPi Technology Solutions | 256 | — | 1 |