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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| 256 |
| 3 |
| AS398322US | ESFCU-01 - Educational Systems Federal Credit Union | 512 | — | 2 |
| AS21710US | SLCHA - St. Lucie County - Automated Services | 512 | — | 2 |
| AS63249US | RSFH - Roper Saint Francis Healthcare | 512 | — | 2 |
| AS26852US | FAFCU-BGP-01 - F&A Federal Credit Union | 512 | — | 2 |
| AS62877US | AIR-METHODS-ASN-FOR-DENVER-OMAHA-SAN-BERNARDINO - AIR METHODS | 512 | — | 1 |
| AS33161US | CHUMASH-ENTERPRISES - Chumash Casino Resort | 512 | — | 2 |
| AS394776US | RGL-ASN-1 - JACK Entertainment LLC | 512 | — | 2 |
| AS63395US | FLEXTRADE-SYSTEMS-INC - Flextrade Systems, Inc. | 512 | — | 2 |
| AS394127US | ALACRITYSERVICES - Alacrity Services | 512 | — | 2 |
| AS398911US | TERABIT-NETWORKS - Terabit Networks | 512 | — | 1 |
| AS40735US | HAIB - HudsonAlpha Institute for Biotechnology | 512 | — | 2 |
| AS62517US | TAIWAN-TELECOM - Taiwan Telecom | 512 | 1 | 3 |
| AS25729US | CITY-OF-IRVING - City of Irving | 512 | — | 2 |
| AS33012US | VERTEX-RESEARCH-GROUP - Vertex Research Group, Inc. | 512 | — | 2 |
| AS400918US | TWOROCKLAN - Two Rock LAN | 512 | — | 2 |
| AS396291US | NCH-HEALTHCARE-SYSTEM - NCH Healthcare System, Inc. | 512 | — | 2 |
| AS33685US | LOAFHOSTS - Loafhosts | 512 | — | 2 |
| AS398188US | COUNTY-OF-PASSAIC - County of Passaic | 512 | — | 1 |
| AS21930US | INFORMATICA - Informatica LLC | 512 | — | 2 |
| AS23112US | FLUIDSTACK-NET - Fluidstack Inc | 512 | 65.6K | 4 |
| AS397146US | FARMCREDIT-MIDAMERICA - Farm Credit Mid-America | 512 | — | 2 |
| AS5728US | WORLDNET1 - AT&T Enterprises, LLC | 512 | — | 1 |
| AS395943US | MHAGBGP - Memorial Hospital at Gulfport | 512 | — | 2 |
| AS22270US | BANGOR-SAVINGS-BANK - Bangor Savings Bank | 512 | — | 2 |
| AS395654US | AGNCAS - AGNC Mortgage Management, LLC | 512 | — | 2 |
| AS46832US | UNIVERSITY-OF-MISSOURI-SYSTEM-INTER-CAMPUS-NETWORK - University of Missouri - dba the Missouri Research and Education Network (MOREnet) | 512 | — | 2 |
| AS53796US | MCH - Miami Children's Hospital | 512 | — | 1 |
| AS13460US | EARTHCAM - EarthCam, Inc. | 512 | 2 | 4 |
| AS16905US | LEARN-RESEARCH - LEARN | 512 | 2 | 4 |
| AS396089US | NEXCUS - NEXCUS TECHNOLOGIES LLC | 512 | — | 2 |
| AS397429US | SEATTLE-HQ - EXPEDIA, INC | 512 | — | 2 |
| AS47029US | CAPSTONE - Capstone Logistics, LLC | 512 | — | 2 |
| AS12055US | CLEARBEARING-00 - Clearbearing Inc. | 512 | 1 | 3 |
| AS398015US | MICRO4ASN - MicroFour, Inc. | 512 | — | 2 |
| AS54469US | COV-ISP - City of Vacaville | 512 | — | 2 |
| AS27224US | EQUINIX-EC-LA - Equinix, Inc. | 512 | 1 | 3 |
| AS32854US | PCTCU-ASN - Achieva Credit Union | 512 | — | 2 |
| AS36102US | PFS - State Street Bank and Trust Company | 512 | — | 2 |
| AS11760US | CHFA - Connecticut Housing Finance Authority | 512 | — | 2 |
| AS397509US | FLOOR-AND-DECOR - Floor and Decor Outlets of America, Inc. | 512 | — | 2 |
| AS402389US | AMHERST - Amherst | 512 | 1 | 2 |
| AS32169US | CMENETWORKS - CME Networks, LLC | 512 | 256 | 3 |
| AS30258US | HUNTINGTONMEMORIALHOSPITAL - Huntington Memorial Hospital | 512 | — | 2 |
| AS395842US | GLACIER-BROADBAND-MT - Glacier Broadband | 512 | — | 2 |
| AS30672US | AS30672 - QMACS | 512 | — | 2 |
| AS399257US | INCOMM-NET4 - InComm | 512 | — | 2 |