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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 |
| AS1670US | ANS-UK - Verizon Business | 256 | — | 1 |
| AS398140US | WBGAMES-SLC - WB Games Inc. | 256 | — | 1 |
| AS55133US | ST-CROIX-CENTRAL-SCHOOL-DISTRICT - St. Croix Central School District | 256 | — | 1 |
| AS11665US | NORTH-RIDGE - North Ridge | 256 | 4.1K | 2 |
| AS401588US | INNOWAVE - InnoWave Solution LLC | 256 | 256 | 2 |
| AS401269US | GREENVILLEWATER - Greenville Water | 256 | — | 1 |
| AS33390US | READYTECH - READYTECH CORPORATION | 256 | — | 1 |
| AS393999US | ALPINEWEB - AlpineWEB | 256 | — | 1 |
| AS19745US | OKTA - Okta, Inc. | 256 | 3 | 4 |
| AS205602US | BRINSTAR Seamus Caveney | 256 | 259 | 5 |
| AS30669US | CAMDEN-NATIONAL - Camden National Bank | 256 | — | 1 |
| AS396175US | PSC - PEGASUS SOLUTIONS COMPANIES | 256 | — | 1 |
| AS398554US | SKYWORKSINC - Skyworks Solutions, Inc | 256 | — | 1 |
| AS402017US | RAFASN01 - Radiologic Associates of Fredericksburg, LTD. | 256 | — | 1 |
| AS397512US | BGP-HQ-01 - The College of American Pathologists | 256 | — | 1 |
| AS395389US | LIFEPOINTHEALTH - LEGACY LIFEPOINT HEALTH, LLC | 256 | — | 1 |
| AS62826US | CSO-AS - CHICAGO SYMPHONY ORCHESTRA | 256 | — | 1 |
| AS398280US | SYSTEMVERSE-ARIN-01 - Systemverse LLC | 256 | 4.1K | 2 |
| AS21811US | BAB - Build-A-Bear Workshop, Inc. | 256 | — | 1 |
| AS395708US | PEARLANDTX - City of Pearland | 256 | — | 1 |
| AS53957US | MILLERS-CAPITAL - Millers Capital Insurance Company | 256 | — | 1 |
| AS400930US | SIGI - Sigi World | 256 | 64 | 2 |
| AS400102US | LYONC - Apogee Telecom Inc. | 256 | — | 1 |
| AS402779US | AMG-01 - AmeriCo | 256 | — | 1 |
| AS393868US | VALLEY-PRESBYTERIAN-HOSPITAL - VPH | 256 | — | 1 |
| AS394812US | DCE911 - Decatur County E911 Board | 256 | 16 | 2 |
| AS400629US | EDWARDS-LIFESCIENCES - EDWARDS LIFESCIENCES CORPORATION | 256 | — | 1 |
| AS400912US | REEF-ATLNET-FL-01 - Mailreef | 256 | — | 1 |
| AS400543US | NHC-BGP-AS - NEWTON HEALTHCARE CORPORATION | 256 | — | 1 |
| AS32294US | CITY-OF-CHAMPAIGN-IL - City of Champaign, Illinois | 256 | — | 1 |
| AS402767US | ASPITEX-AS - Aspitex | 256 | 1 | 2 |
| AS17357US | AS-DCI-31 - Development Corporation for Israel | 256 | — | 1 |
| AS19650US | BUNZLUSA - Bunzl Distribution, Inc. | 256 | — | 1 |
| AS53915US | SEI - SECURITY EQUIPMENT INC | 256 | — | 1 |
| AS23544US | ASN1 - City of Mission Viejo | 256 | — | 1 |
| AS394020US | LFUCG - Lexington-Fayette Urban County Government | 256 | — | 1 |
| AS11974US | DOS-GPADN-01 - US Department of State | 256 | — | 1 |
| AS32684US | ARIENS - Ariens Company | 256 | — | 1 |
| AS397795US | THEFIREHORN-NET - The Fire Horn, Inc. | 256 | 2 | 3 |
| AS11775US | CLOUGIX-11775 - Semina Tempus, LLC | 256 | — | 1 |
| AS14067US | FOUROVER-GLN-CA - 4 Over, Inc. | 256 | — | 1 |
| AS398286US | LOCKARD-ASN-1 - Lockard, LLC. | 256 | — | 1 |
| AS14064US | NRECA - NRECA | 256 | — | 1 |
| AS54722US | BMOS - Museum of Science | 256 | — | 1 |
| AS14597US | TRANS-SYSTEM - Trans-System inc. | 256 | — | 1 |
| AS33286US | TURLOCK-IRRIGATION-DISTICT - Turlock Irrigation District | 256 | — | 1 |