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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 | 24,632 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,210 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 256 |
| 3 |
| 3 |
| AS402540US | MJWINNOVATIONS - MJW | 256 | 1 | 2 |
| AS402957US | COOPER - Cooper | 256 | — | 1 |
| AS17002US | AVISTA-CAPITAL - Avista Capital, Inc. | 256 | — | 1 |
| AS20304US | LEPTON-GLOABL-SOLUTIONS-2012 - Lepton Global Solutions, LLC. | 256 | — | 1 |
| AS402632US | WELLMAN-INDUSTRIES - Wellman | 256 | 256 | 2 |
| AS31927US | MPR-ASSOCIATES - MPR Associates | 256 | — | 1 |
| AS399485US | TCW-AS-TOR - The TCW Group, Inc. | 256 | — | 1 |
| AS402114US | CYPRUSCU - CYPRUS CREDIT UNION INC. | 256 | — | 1 |
| AS32076US | PXDNET - PIONEER NATURAL RESOURCES USA | 256 | — | 1 |
| AS402385US | SPICER-NETWORKS - Spicer | 256 | 256 | 2 |
| AS46081US | FOOD-DONATION-CONNECTION - Food Donation Connection | 256 | — | 1 |
| AS393700US | VANDHAM-SECURITIES - Wall Street Access | 256 | — | 1 |
| AS399685US | HN-ASN-01 - Herring Networks, Inc. | 256 | 1 | 2 |
| AS394415US | TROYGROUP - TROY Group, Inc. | 256 | — | 1 |
| AS395707US | CEJ-COMPUTER - CEJ Computer Business Systems, LLC | 256 | — | 1 |
| AS402037US | 2GHZ-NET-ASN-01 - 2ghz.net LLC | 256 | 256 | 2 |
| AS396335US | LRHS-LAKELAND-FL - Lakeland Regional Health Systems, Inc | 256 | — | 1 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS399875US | SIMONMED-PUBLIC - SimonMed Imaging | 256 | — | 1 |
| AS13447US | QYRUS-INC - QYRUS INC. | 256 | — | 1 |
| AS64246US | CRA-CO - Cator, Ruma & Associates, Co. | 256 | 2 | 3 |
| AS20122US | NOS-NOG2 - NOS Network Operations Group | 256 | — | 1 |
| AS394665US | MOSSASN - Moss & Associates, LLC | 256 | — | 1 |
| AS26723US | SJCRH - St. Jude Children's Research Hospital | 256 | — | 1 |
| AS402549US | TERRASERVERS-NET - Terraservers | 256 | — | 1 |
| AS399741US | BN-AS-01 - BAE Networks | 256 | — | 1 |
| AS6245US | NETWORK-SOLUTIONS - InterNIC Registration Services | 256 | — | 1 |
| AS32213US | BLANK-ROME-LLP - BLANK ROME LLP | 256 | — | 1 |
| AS30227US | CAMBRIDGE-HEALTH-ALLIANCE - Cambridge Public Health Commission | 256 | — | 1 |
| AS401438US | NETFABRIC-01 - NetFabric, LLC | 256 | — | 1 |
| AS19375US | NUMERICINVESTORS - Numeric Investors LLC | 256 | — | 1 |
| AS394698US | FITCHBURG-STATE-UNIVERSITY - Fitchburg State University | 256 | — | 1 |
| AS402704US | TURRETTECH-AS-01 - TURRET. | 256 | 256 | 2 |
| AS399539US | COTTAGE-HEALTH01 - Cottage Health | 256 | — | 1 |
| AS46468US | AMGH-DFWDC - Air Medical Group Holdings | 256 | — | 1 |
| AS400527US | AS-PROPONENT - Proponent | 256 | — | 1 |
| AS17172US | FJDPNET - FIFTH JUDICIAL DISTRICT OF PENNYSYLVANIA | 256 | 1 | 2 |
| AS401733US | WTS-MSP - Wachter Technology Solutions | 256 | — | 1 |
| AS7761US | AS-350E - Morningstar, Inc. | 256 | — | 1 |
| AS394227US | ETTKY - Eastern Telephone & Technologies, Inc. | 256 | — | 1 |
| AS398199US | AMS-DUH-NC - HEWLETT PACKARD ENTERPRISE COMPANY | 256 | — | 1 |
| AS30412US | COR-3516 - CITY OF CORONA | 256 | — | 1 |
| AS395231US | IFANR - IFANR LLC | 256 | 4.1K | 2 |
| AS400977US | JCSMH-ASN-01 - Schneck Medical Center | 256 | — | 1 |
| AS399774US | ANDELYN-BIOSCIENCES-01 - Andelyn Biosciences, Inc. | 256 | — | 1 |
| AS402778US | ATABYTE - Atabyte | 256 | — | 1 |