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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. | 210.9M | 21,017 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,219 |
| 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 |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,585 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,932 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,534 |
| 6.1K |
| — |
| 2 |
| AS397377US | ESTES-PARK - Town of Estes Park | 6.1K | — | 7 |
| AS11966US | GLOBALDATASYSTEMS-ASN - GLOBAL DATA SYSTEMS INC. | 6.1K | — | 8 |
| AS22301US | APC-CC-CUSTOMERS - RingSquared CC | 6.1K | — | 2 |
| AS19919US | VSW - VA SkyWire, LLC | 6.1K | 1M | 3 |
| AS19355US | SMRN-NET - San Mateo Regional Network, Inc. | 6.1K | 65.5K | 10 |
| AS393230US | DM-TECH-INTERNET - DM-Tech Internet | 6.1K | — | 10 |
| AS400737US | AMS-CO-CXO - HEWLETT PACKARD ENTERPRISE COMPANY | 6.1K | — | 4 |
| AS5744US | USPTO - United States Patent and Trademark Office | 6.1K | 322 | 10 |
| AS54238US | SATCOM-DIRECT-INC - Satcom Direct Inc. | 6.1K | — | 5 |
| AS3374US | MCI-ASN - Verizon Business | 6.1K | — | 2 |
| AS12155US | AS-HMPL - Henderson Municipal Power & Light | 6.1K | 4.1K | 3 |
| AS17350US | MOODYS - Moody's Corp. | 6.1K | — | 21 |
| AS40076US | DOVETEL - DOVETEL COMMUNICATIONS, LLC. | 6.1K | 65.5K | 6 |
| AS395534US | SYRACUSE-CITY-SCHOOL-DISTRICT-10 - Syracuse City School District | 6.1K | — | 6 |
| AS47054US | JETWASN - JetWire, INC | 6.1K | — | 11 |
| AS398413US | MIAMI-DADE-COUNTY-ASN - Miami-Dade County | 6.1K | — | 17 |
| AS1054US | ZONT-LLC - Zont LLC | 6.1K | 7 | 31 |
| AS14379US | N-T-C - The Northern Trust Company | 6.1K | — | 7 |
| AS7138US | ENCOMPASS-ASN - Encompass Digital Media, Inc. | 6.1K | 1 | 17 |
| AS398291US | AS-PHREESIA-1 - Phreesia, Inc. | 6.1K | 1 | 19 |
| AS15294US | SENTINELTECH - Sentinel Technologies, Inc. | 6.1K | 17 | 15 |
| AS53971US | PDFIBER-LLC - PD Fiber, LLC | 6.1K | — | 4 |
| AS7105US | DOWJONES-AS - Dow Jones & Company, Inc. | 6.1K | — | 23 |
| AS30377US | MACST-DUB - MacStadium, Inc. | 6.1K | 8.2K | 8 |
| AS40555US | CONNECTTO - ConnectTo Communications, Inc | 6.1K | 65.5K | 5 |
| AS23381US | TRAVELERS - Travelers Property Casualty Corp. | 6.1K | — | 18 |
| AS18948US | NYMC2000-ARIN - New York Medical College | 6.1K | — | 3 |
| AS14922US | IPSOFT-US-ASN1 - IPsoft | 6.1K | — | 10 |
| AS401909US | MINRTT - MinRTT Inc | 6.1K | 65.5K | 10 |
| AS53834US | DINCL - dinCloud Inc. | 6.1K | 32.8K | 10 |
| AS31758US | MLGC-AS - Griggs County Telephone Co. | 6.1K | — | 2 |
| AS2631US | WBD-AS2631 - Discovery Communications | 6.1K | — | 23 |
| AS27292US | RESMED-AMR-AS - ResMed Corp. | 6.1K | — | 6 |
| AS4497US | UPSTEL-NET - Upsala Co-operative Telephone Association | 6.1K | — | 5 |
| AS6362US | MIDLANDCOLLEGE-ASN - Midland College | 6.1K | — | 2 |
| AS36612US | CLARKCOUNTYWA - Clark County WA | 6.1K | — | 2 |
| AS26088US | INLANDTELEPHONE - Inland Internet | 6.1K | — | 4 |
| AS400940US | RAILWAY - Railway | 6.1K | 1.8K | 17 |
| AS400381US | CENTRICTX-ASN - Centric Fiber Texas, LLC | 6.1K | — | 15 |
| AS19275US | INTERVAL - Interval International, Inc. | 6.1K | — | 9 |
| AS46414US | OTELCO-MA - GoNetSpeed | 6.1K | 4.1K | 20 |
| AS33512US | GATEWAY-PROCESSING-SERVICES - Gateway Processing Services | 6.1K | — | 11 |
| AS63251US | METRO-WIRELESS - Metro Wireless International, Inc. | 6.1K | — | 12 |
| AS19982US | TWRS-FL - Natural Wireless, LLC | 6.1K | 1 | 5 |
| AS25674US | MT-1392-25674 - Lingo Telecom, LLC | 6.1K | — | 20 |
| AS31849US | PINNACLE - TGM Pinnacle Network Solutions llc | 6.1K | 65.5K | 6 |