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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 3.3K |
| 520 |
| 14 |
| AS6914US | HCSNET-ASNBLK - Hayes Computer Systems | 3.3K | 4.1K | 4 |
| AS393556US | NSH167 - Northside Hospital | 3.3K | — | 8 |
| AS22369US | ONEMIND-01 - Cloudmylab.com | 3.3K | — | 13 |
| AS7914US | CSI - Church of Scientology International | 3.3K | — | 12 |
| AS36782US | AS36782 - Keyway Network Systems | 3.3K | — | 13 |
| AS22464US | NELTC-ISP - Northeast Louisiana Telephone Company, Inc. | 3.3K | 65.5K | 4 |
| AS400666US | DOBSON-ASN-02 - Dobson Technologies - Transport and Telecom Solutions, LLC | 3.3K | — | 5 |
| AS398940US | USA-NETWORKING - University of South Alabama | 3.3K | 65.5K | 13 |
| AS6989US | GTSI - Government Technology Services Inc. | 3.3K | — | 13 |
| AS137933US | HOMERHOST-AS-AP - CyberForest LLC. | 3.3K | 1 | 12 |
| AS8757US | NSFOCUS NSFOCUS, Inc. | 3.3K | 7 | 20 |
| AS33052US | VZUNET - Verizon Business | 3.3K | 1 | 5 |
| AS19574US | CSC - Corporation Service Company | 3.3K | 1 | 7 |
| AS12253US | LEONCOUNTYFL - Leon County Board of County Commisioners | 3.3K | — | 11 |
| AS21646US | FISHER - Fisher Investments Inc. | 3.3K | — | 13 |
| AS20029US | HCDL-DENVER-DATA-CENTER - H5 Data Centers | 3.3K | 4.1K | 14 |
| AS395194US | SBL-NE-ASN - Stealth Broadband | 3.3K | 65.5K | 8 |
| AS25808US | CONCORD-MA - Town of Concord MA | 3.3K | — | 13 |
| AS395712US | MPUA-MILINK - Milan Public Utilities Authority | 3.3K | 65.5K | 10 |
| AS198178US | INC-PARTNERS-365 365.partners INC | 3.3K | 3 | 16 |
| AS393226US | INTERCONTINENTAL-EXCHANGE-MULTI-ISP-SITES - Intercontinental Exchange, Inc. | 3.3K | — | 13 |
| AS14935US | MONTICELLO - Monticello Networks, Inc. | 3.3K | 5 | 8 |
| AS396924US | SKYLANDS-NETWORKS - Skylands Networks | 3.3K | 65.5K | 8 |
| AS40138US | MDNET - Mach Dilemma, LLC | 3.3K | 42 | 50 |
| AS11699US | UNIVOIP - UniVoIP Inc. | 3.3K | — | 9 |
| AS16409US | PBW-COMMUNICATIONS - PBW Communications, LLC | 3.3K | 65.5K | 4 |
| AS401694US | CLOUD-9-INTERNET - Cloud 9 Wireless LLC | 3.3K | 4.1K | 7 |
| AS26344US | REALPAGE-INC - Real Page, Inc. | 3.3K | — | 11 |
| AS46846US | DOE-HQ-COOP - U.S. Department of Energy | 3.3K | 3.3K | 35 |
| AS395650US | BEAON-PUB01 - Carelon Behavioral Health, Inc. | 3.3K | — | 6 |
| AS3595US | DATABANK-ZCOLO - zColo | 3.3K | 1 | 6 |
| AS396921US | US-CBP - U.S. Customs and Border Protection | 3.3K | 17 | 15 |
| AS30212US | HYPERMEDIA-SYSTEMS - Hypermedia Systems, Inc. | 3.3K | — | 7 |
| AS400342US | EDGENAT-CLOUD - EDGENAT CLOUD | 3.3K | 1.4M | 57 |
| AS399937US | UCMCLOUD - Cisco Webex LLC | 3.3K | — | 13 |
| AS40412US | PAHOUSE - PA House of Representatives - Democratic Caucus | 3.3K | — | 9 |
| AS399440US | AS-HEARTLANDFIBER - Heartland Fiber, Inc. | 3.3K | — | 4 |
| AS26121US | JEPPESEN - Jeppesen ForeFlight Inc. | 3.3K | — | 10 |
| AS393429US | OPTIC-LOOP-COMMUNICATIONS-LLC - Bertram Communications LLC | 3.3K | — | 6 |
| AS397880US | SKYWIRE-ASN - Mitec Solutions | 3.3K | 65.5K | 8 |
| AS401890US | HYPFLX-AS01 - Hyperflex Broadband LLC | 3.3K | 65.5K | 4 |
| AS36738US | AS-NVA1-1 - Athenahealth | 3.3K | — | 7 |
| AS31843US | ARXWEB - Arx Technologies | 3.3K | 4.1K | 5 |
| AS395260US | FARMERSTELCOM - The Farmers Telephone Company Inc. | 3.3K | — | 12 |
| AS62798US | PBB-OPELIKA - Point Broadband Fiber Holding, LLC | 3.3K | — | 4 |
| AS19124US | ASCENSION-WHEATON - Ascension Technologies | 3.3K | — | 13 |