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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS54526US | UHLIG-LLC - Uhlig LLC | 256 | — | 1 |
| AS200282US | CIMAX-LLC CIMAX Technologies LLC | 256 | 2 | 3 |
| AS33113US | CONETRIX - CONETRIX LLC | 256 | — | 1 |
| AS394490US | AATRIX - Aatrix Software, Inc | 256 | — | 1 |
| AS27301US | CERNER-MINNESOTA-DC - Cerner Corporation | 256 | — | 1 |
| AS397652US | SMSC - SMSC | 256 | — | 1 |
| AS22776US | CONRES01730 - Continental Resources | 256 | — | 1 |
| AS14993US | MHASN4-01 - Millennium Health, LLC | 256 | — | 1 |
| AS11048US | DIGITALSTAKEOUT - DigitalStakeout | 256 | 1 | 2 |
| AS401576US | BITRIOT - Bitriot LLC | 256 | — | 1 |
| AS214388US | Cloudnet-Technologies-LLC Cloudnet Technologies L.L.C. | 256 | — | 1 |
| AS60632US | HDIGR Sniperhill Internet services LLC | 256 | — | 1 |
| AS402347US | CAV-MNG-AS-01 - Cavnue | 256 | 1 | 2 |
| AS58313US | MISAKA-UK-AS Misaka Network, Inc. | 256 | 65.5K | 3 |
| AS23026US | SETEC-ASTRONOMY - SETEC ASTRONOMY INC | 256 | 19 | 5 |
| AS14002US | AS14002 - RAILINC CORP. | 256 | — | 1 |
| AS395422US | OAKLAWNRACINGANDGAMING - OAKLAWN JOCKEY CLUB, INC. | 256 | — | 1 |
| AS394910US | SUNEDISON-SEMI-US - MEMC LLC | 256 | — | 1 |
| AS395398US | PCSD-NETWORK - Putnam County School District | 256 | — | 1 |
| AS63285US | ML-PROD-INTERNET-NORTH - Merchant-Link, LLC | 256 | — | 1 |
| AS11793US | ATI-LAS-ASN1 - Aristocrat Technologies, Inc. | 256 | — | 1 |
| AS19617US | SAA - SOUTHERN AUTO AUCTION | 256 | — | 1 |
| AS17125US | LOGIS-ASN-01 - Logistics Plus, Inc. | 256 | — | 1 |
| AS396214US | HOSPITALFORSPECIALCARE - Hospital for Special Care | 256 | — | 1 |
| AS399051US | ALLSTATE-SECURITY-INDUSTRIES-INC - ALLSTATE SECURITY INDUSTRIES, INC. | 256 | — | 1 |
| AS19831US | STAMPIN - StampinUp | 256 | — | 1 |
| AS397536US | CLOUDCONNECTIV - Cloud Connectiv Incorporated | 256 | — | 1 |
| AS394118US | VSSMEDICAL-CT-01 - Sigmund Software, LLC | 256 | 1 | 2 |
| AS53317US | WAKEMED - WakeMed | 256 | — | 1 |
| AS14657US | CEC-INET - Crown Equipment Corporation | 256 | — | 1 |
| AS46249US | OAI-5-ASN - Omni Air International Inc. | 256 | — | 1 |
| AS16884US | TOURM-3 - Tourmaline Partners LLC | 256 | — | 1 |
| AS397765US | CCA - California College of the Arts | 256 | — | 1 |
| AS22630US | TLWIFI - TENMILE LAKE WIFI CORP. | 256 | 256 | 2 |
| AS14246US | THALESCOMMINC-AS - Thales Communications Inc. | 256 | — | 1 |
| AS23306US | PLASTIPAK-PACKAGING - Plastipak Packaging | 256 | — | 1 |
| AS32321US | NEWARKNET - NEWARK NET | 256 | — | 1 |
| AS27242US | ATI-LAX - AMERICANTOURS INTERNATIONAL INC. | 256 | — | 1 |
| AS399968US | TKS-DFW-ASN01 - Turnkey Solutions, LLC | 256 | — | 1 |
| AS36814US | THE-TOLEDO-BLADE-COMPANY - THE TOLEDO BLADE COMPANY | 256 | — | 1 |
| AS12254US | INSTRUCTURE-MAIN - Instructure, Inc | 256 | — | 1 |
| AS396506US | BEVAIR-27105 - BEVERAGE AIR CORPORATION | 256 | — | 1 |
| AS395642US | MOZILLA-TOR1 - Mozilla Corporation | 256 | 1 | 2 |
| AS54264US | LIFECHURCH - LIFE COVENANT CHURCH, INC | 256 | — | 1 |
| AS397021US | BELTON-INDEPENDENT-SCHOOL-DISTRICT - Belton Independent School District | 256 | — | 1 |
| AS395068US | MCHENRYCOUNTYCOLLEGEASN - McHenry County College District 528 | 256 | — | 1 |