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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 |
| 2.6K |
| — |
| 3 |
| AS63104US | MOHAWK-NETWORKS - Mohawk Networks LLC | 2.6K | — | 3 |
| AS393294US | MEGATEL-NETCOM - Megatel Netcom Corporation | 2.6K | 257 | 12 |
| AS46851US | TURNITIN - Turnitin LLC | 2.6K | — | 3 |
| AS393821US | LISMORE-COOPERATIVE-TELEPHONE - Lismore Cooperative Telephone Company | 2.6K | — | 2 |
| AS40828US | THE-RMR-GROUP - The RMR Group LLC | 2.6K | — | 3 |
| AS394122US | DEBEVOISE - Debevoise and Plimpton LLP | 2.6K | — | 9 |
| AS11805US | ENNWISE-AS - Ennwise | 2.6K | 2 | 9 |
| AS393240US | BTWI-WIRELESS-INTERNET - BTWI Wireless Internet LLC | 2.6K | — | 3 |
| AS402321US | ZENIX-CLOUD-AS2 - Zenix | 2.6K | — | 2 |
| AS393526US | NTS-BORGER-01 - Vexus Fiber | 2.6K | — | 6 |
| AS22970US | MAINETECHCOLLEGESYS - Maine Technical College System | 2.6K | — | 10 |
| AS22687US | L3NET - L3 NETWORKS INC | 2.6K | — | 10 |
| AS32393US | BDN - Brown Dog Networks | 2.6K | — | 4 |
| AS26492US | VCCCD-NET - VCCCD | 2.6K | — | 10 |
| AS20234US | HNTB - HNTB CORPORATION | 2.6K | — | 6 |
| AS397909US | EGUSD-01 - Elk Grove Unified School District | 2.6K | — | 10 |
| AS22181US | IVNET - IV NET, LLP | 2.6K | — | 4 |
| AS21US | RAND - The RAND Corporation | 2.6K | — | 10 |
| AS393258US | SAFETYNET1 - Safety NetAccess, Inc. | 2.6K | — | 2 |
| AS36844US | SAWS---SAN-ANTONIO-WATER-SYSTEM - San Antonio Water System | 2.6K | — | 10 |
| AS40444US | ASN-CC - Constant Contact, Inc | 2.6K | — | 6 |
| AS1858US | DISN-PILOTNET4 - RTX BBN Technologies, Inc. | 2.6K | — | 3 |
| AS26814US | ASN-COBNET - City of Birmingham | 2.6K | — | 2 |
| AS3576US | AS-HODGSON-RUSS-NET - Hodgson Russ LLP | 2.6K | — | 7 |
| AS13688US | PSEG - Public Service Enterprise Group | 2.6K | — | 4 |
| AS18874US | MAXAR-ASN - Vantor Parent Inc. | 2.6K | — | 10 |
| AS16668US | GBPSW-AS - GBP Software, LLC | 2.6K | 65.5K | 7 |
| AS21869US | SUN-CHEMICAL - Sun Chemical Corporation | 2.6K | — | 7 |
| AS19181US | CWIE - CWIE LLC | 2.6K | 259 | 12 |
| AS4232US | EDEN-AS - Adhesive Media, Inc. | 2.6K | — | 10 |
| AS35895US | CMMG-LTD - CMMG Ltd | 2.6K | 4.1K | 5 |
| AS62983US | AS-MPA - The Massachusetts Port Authority | 2.6K | — | 10 |
| AS36363US | VIRIDIO-SOCAL - Viridio | 2.6K | 65.5K | 5 |
| AS30533US | THEBOE-30533 - The Boeing Company | 2.6K | — | 10 |
| AS398642US | SKANSKA-USA-WEST - SKANSKA USA INC | 2.6K | 1K | 4 |
| AS30405US | CAIU-NET - Capital Area Intermediate Unit | 2.6K | 4.1K | 11 |
| AS402167US | AS-NEBIUS-CENTRAL - Nebius Inc. | 2.6K | 17 | 5 |
| AS53845US | BBDTEL - Broadband Dynamics, LLC | 2.6K | — | 10 |
| AS11133US | SORENSON-99 - Sorenson Communications, Inc. | 2.6K | — | 10 |
| AS14602US | TELIAX - Teliax, Inc. | 2.6K | 65.5K | 8 |
| AS25755US | NPR - National Public Radio, Inc. | 2.6K | — | 10 |
| AS18934US | TENHATS - TenHats, LLC | 2.6K | 3 | 13 |
| AS402072US | OZONTI-NETWORK-LLC - OZONTI NETWORK LLC | 2.6K | 258 | 13 |
| AS18630US | RIDLEYSD-NET - The Ridley School District | 2.6K | — | 2 |
| AS398636US | 832-COMMUNICATIONS - 832 Communications, LLC | 2.6K | 65.5K | 9 |
| AS32111US | CITIGROUP-JAPAN - Citigroup Inc. | 2.6K | — | 10 |