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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 | 23,666 |
| 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 |
| 234 |
| 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 | 4,491 |
| 5.4K |
| — |
| 12 |
| AS3465US | JBHUNT - J. B. Hunt Transport Inc. | 5.4K | — | 8 |
| AS40311US | VIASAT-3 - ViaSat,Inc. | 5.4K | — | 11 |
| AS62516US | ABB-ASN - Alamo Broadband Inc. | 5.4K | 65.5K | 7 |
| AS1416US | CHICAGO-PUBLIC-SCHOOLS - Chicago Public Schools | 5.4K | — | 10 |
| AS254US | OPENTEXT - Attachmate Corp. | 5.4K | 1 | 10 |
| AS33321US | ZAYO-33321 - Zayo Bandwidth | 5.4K | — | 6 |
| AS140952US | STL-AS-AP - Strong Technology, LLC | 5.4K | 1.3K | 20 |
| AS149513US | VCL-147-149513 - Vertex Connectivity LLC | 5.4K | 1.3K | 24 |
| AS965US | WEBHOSTINGHOLDINGS - Webhosting Holdings LLC | 5.4K | 16.4K | 23 |
| AS396185US | PEMTEL - GILES-CRAIG COMMUNICATIONS INC. | 5.4K | — | 13 |
| AS3930US | FERC-FED-US - Federal Energy Regulatory Commission | 5.4K | — | 6 |
| AS397270US | NETINF-TRANSIT-AS - NetInformatik Inc. | 5.4K | 1.5K | 18 |
| AS10844US | VASTNET - Vastnet Corp | 5.4K | — | 5 |
| AS20264US | WEBAIR-INTERNET-2 - Webair Internet Development Company Inc. | 5.4K | 65.5K | 20 |
| AS63117US | CDI - Churchill Downs Incorporated | 5.4K | — | 8 |
| AS25687US | KVH02842 - KVH INDUSTRIES,INC. | 5.4K | 1 | 12 |
| AS17303US | NETWORK-ADVISORS - Disaster Networks, LLC | 5.4K | 12.3K | 18 |
| AS54300US | LIGHTSPEED-VOICE - Lightspeed Voice | 5.4K | — | 16 |
| AS29949US | BFS-49-29949 - Broadridge Financial Solutions, Inc. | 5.4K | — | 6 |
| AS54142US | WHITE-CLOUD-COMMUNICATIONS - White Cloud Communications US, LLC | 5.4K | — | 6 |
| AS36372US | VENYU-3 - REV | 5.4K | 65.5K | 4 |
| AS19701US | YODLEE - Yodlee Inc. | 5.4K | — | 18 |
| AS62802US | MST-JCMAIN - Macy's Systems and Technology, Inc. | 5.4K | — | 15 |
| AS30548US | ARUBA - ARUBA NETWORKS, INC. | 5.4K | 90 | 13 |
| AS401560US | ONECABLE - OneCable Network LLC | 5.4K | 32 | 23 |
| AS21549US | IRON-MOUNTAIN - Iron Mountain Inc | 5.2K | — | 17 |
| AS7238US | MACROVISION-CORPORATION - Rovi Corporation | 5.1K | — | 13 |
| AS395652US | COUNTYOFBERGEN - County of Bergen | 5.1K | — | 6 |
| AS30455US | HOSTVENOM-LLC - HostVenom LLC | 5.1K | 4.1K | 18 |
| AS30491US | CROWELLP - Crowe LLP | 5.1K | — | 20 |
| AS46890US | 3COM-NET-ROUTER-AS46890 - 3Com Net Router | 5.1K | — | 13 |
| AS46708US | ENVOI - Allied International Corp of VA. | 5.1K | — | 2 |
| AS31777US | SPARCC-AS - Stark Portage Area Computer Consortium | 5.1K | — | 5 |
| AS395000US | DELUXE-DEC - Deluxe Corporation | 5.1K | — | 20 |
| AS10302US | NEGIA-NET - SNAPPYDSL.NET | 5.1K | — | 2 |
| AS399150US | ISPEXCHANGECORP - ispexchangecorp | 5.1K | — | 5 |
| AS40539US | PROHCI - Hosting Consulting, Inc | 5.1K | — | 7 |
| AS23423US | WASATCH BROADBAND - Wasatch Broadband | 5.1K | 65.5K | 21 |
| AS11472US | YOUR-TOWN-ONLINE - Your Town Online | 5.1K | 65.5K | 3 |
| AS39938US | RCW - River Canyon Wireless | 5.1K | — | 20 |
| AS19436US | CAPROCK-1 - Cap Rock Telephone Cooperative, Inc. | 5.1K | — | 2 |
| AS13943US | YK-COMMUNICATIONS - Y K Communications, LTD | 5.1K | 65.5K | 4 |
| AS14762US | AMGEN - AMGEN, Inc. | 5.1K | — | 17 |
| AS32003US | LITEWIRE-EV - LiteWire Internet Services, Inc. | 5.1K | — | 2 |
| AS10632US | PSE-AS - Puget Sound Energy | 5.1K | — | 12 |
| AS17004US | BROADBANDONDEMAND - Kentucky Wimax | 5.1K | — | 2 |