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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 | 24,389 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,302 |
| 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.
32,169 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| — |
| 1 |
| AS40553US | CUYAHOGA-COUNTY - Cuyahoga County Information Services center | 1K | — | 2 |
| AS33277US | ASN33277 - Cu Cooperative Systems, Inc. | 1K | — | 4 |
| AS40461US | RFIH-NET5 - Retail Finance International Holdings, Inc. | 1K | — | 3 |
| AS22448US | MICRO-SPEC - Microcomputer Specialists, Inc. | 1K | — | 1 |
| AS46258US | ESC3 - Region III Education Service Center | 1K | — | 1 |
| AS53948US | ONEIRIC - Oneiric Systems, LLC | 1K | — | 4 |
| AS22788US | KATYISD - Katy Independent School District | 1K | — | 3 |
| AS20129US | MAS-NJDC - Mizuho Americas Services LLC | 1K | — | 4 |
| AS32488US | COMPASSMSP - CompassMSP, LLC. | 1K | — | 4 |
| AS401299US | SIPNAV-EAST - SipNav LLC | 1K | 256 | 5 |
| AS22886US | ICI-ATL - Incomm | 1K | — | 4 |
| AS20430US | AXCESS-FINANCIAL - Axcess Financial Services, Inc. | 1K | — | 1 |
| AS398158US | CRAA-ASN-01 - Columbus Regional Airport Authority | 1K | — | 1 |
| AS22496US | LIMEBROKERAGE-US - Score Priority Corp | 1K | — | 1 |
| AS40035US | HASTINGS-INSURANCE-CO - Hastings Insurance Company | 1K | 4 | 5 |
| AS54314US | LHA-2-ASN - Lancaster General Health | 1K | — | 4 |
| AS33625US | CORTEVA - Corteva AgriScience LLC | 1K | — | 3 |
| AS54710US | INNOUT - IN-N-OUT BURGERS | 1K | — | 4 |
| AS46588US | CDW-CONFIGS-01 - CDW | 1K | — | 4 |
| AS32446US | HARBOR-CAPITAL-ADVISORS - Harbor Capital Advisors, Inc. | 1K | — | 3 |
| AS22487US | VALENCIA - Valencia College | 1K | — | 4 |
| AS14532US | CBOSS - CBOSS INC | 1K | 6 | 10 |
| AS27441US | SSN-US - ITRON INC. | 1K | — | 2 |
| AS400507US | CHARGER-ACCESS-ASN-01 - Charger Access, LLC | 1K | — | 4 |
| AS400430US | MOUNDSVIEW-ASN - Multi-Tech Systems, Inc | 1K | — | 3 |
| AS13543US | COOKEVILLE-TN-GOV - City of Cookeville | 1K | 1 | 2 |
| AS23368US | DATAONE - DATA ONE SYSTEMS, INC. | 1K | 4.1K | 5 |
| AS397125US | BLOOSURF-ASN-01 - BLOOSURF LLC | 1K | — | 1 |
| AS400406US | KMB2 - Kimberly-Clark Corporation | 1K | — | 3 |
| AS400138US | DATABENTO - Databento, Inc. | 1K | — | 4 |
| AS53933US | TELX-TOR - Telx | 1K | 257 | 3 |
| AS1089US | ZELLATECH - Zella Technologies, LLC | 1K | 4.1K | 2 |
| AS33539US | ISP-MANAGEMENT - ISP Management, Inc. | 1K | — | 4 |
| AS47100US | WITOPIA-AS1 - WiTopia, Inc. | 1K | — | 1 |
| AS36349US | 3ESSENTIALS - 3Essentials Inc. | 1K | — | 4 |
| AS30118US | MAS-CTDC - Mizuho Americas Services LLC | 1K | — | 4 |
| AS393415US | LITTNET - LITTLER MENDELSON, P.C. | 1K | — | 4 |
| AS4451US | ASN1 - 1199SEIU National Benefit Funds | 1K | — | 4 |
| AS19647US | HPINC - HP Inc. | 1K | — | 2 |
| AS401085US | LCRA-ASN2 - Lower Colorado River Authority | 1K | 256 | 4 |
| AS26795US | AS-AEN - Arizona Education Network Services Corporation | 1K | 4.1K | 2 |
| AS33131US | INTRALINKS - INTRALINKS INC. | 1K | — | 4 |
| AS27313US | SPENCER-STUART - Spencer Stuart | 1K | — | 4 |
| AS401618US | AVISBUDGETGROUP - Avis Budget Group, Inc | 1K | — | 2 |
| AS400046US | ZINUS-US - Zinus Inc | 1K | — | 4 |
| AS400790US | CHIA - Chia Network Inc. | 1K | 4 | 8 |