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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 |
| 4.4K |
| — |
| 2 |
| AS17137US | HAWKEYE-SYNIVERSE - Hawkeye Switching LLC. | 4.4K | — | 7 |
| AS19600US | NCH-AS - Nationwide Children's Hospital | 4.4K | — | 2 |
| AS14901US | TAOSNET-NEWMEX - TAOS NET LLC | 4.4K | 1 | 3 |
| AS26958US | ONCOR-1 - Oncor Electric Delivery Company, LLC | 4.4K | — | 8 |
| AS19473US | SWAU - Southwestern Adventist University | 4.4K | 1 | 3 |
| AS19793US | LINIVO - Linivo LLC | 4.4K | — | 6 |
| AS11203US | MATRIX-BROADBAND - Matrix Broadband | 4.4K | — | 17 |
| AS399200US | AYVA - Ayva | 4.4K | 69.6K | 17 |
| AS399597US | BOLD-WJC - Apogee Telecom Inc. | 4.4K | 1 | 3 |
| AS397446US | MIDWESTFIBERNETWORK-ASN1 - Midwest Fiber Network, LLC | 4.4K | 65.8K | 12 |
| AS11910US | LAKENET-LLC - LakeNet LLC | 4.4K | — | 17 |
| AS33359US | COWEN-AS-3 - COWEN EXECUTION SERVICES LLC. | 4.4K | — | 14 |
| AS13917US | CORPWEST - Corporate West Computer Systems, Inc. | 4.4K | 65.5K | 3 |
| AS17242US | UNIPAC - UNIPAC Service Corporation | 4.4K | 256 | 18 |
| AS400674US | CLAY-COUNTY-CONNECT - Clay County Connect, Inc | 4.4K | 65.5K | 3 |
| AS21795US | MSMC-ASN - Mount Saint Mary College | 4.4K | — | 2 |
| AS14368US | BRAZOS-INTERNET - Brazos Internet | 4.4K | — | 2 |
| AS26209US | NETWORK-TOOL - Network Tool and Die Company, Inc. | 4.4K | — | 7 |
| AS26337US | OIS1 - Oso Grande IP Services, LLC | 4.4K | — | 17 |
| AS55032US | JAXNET-BH-01 - The Jackson Laboratory | 4.4K | — | 17 |
| AS11512US | PDM - Parsec Data Management Inc. | 4.4K | 4.1K | 12 |
| AS6931US | RINGLING - Ringling College of Art and Design | 4.4K | — | 2 |
| AS40819US | VPSDATACENTER - Liquid Web, L.L.C | 4.4K | 256 | 13 |
| AS20228US | NTUA - Navajo Tribal Utility Authority | 4.1K | 65.5K | 4 |
| AS12234US | UUNET-INT - Verizon Business | 4.1K | — | 7 |
| AS23420US | AS-DAVENPRO - Davenpro Enterprises LLC | 4.1K | 65.5K | 7 |
| AS16822US | VISER - Viser | 4.1K | — | 1 |
| AS46988US | MICA-AS - Maryland Institute College of Art | 4.1K | — | 1 |
| AS14497US | BITREFINERY-1 - Bit Refinery, LLC | 4.1K | — | 13 |
| AS46494US | CHRISCOMCO - Christensen Communications Company | 4.1K | — | 3 |
| AS26674US | ARGON-TECHNOLOGIES-INCORPORATED - Argon Technologies, Inc. | 4.1K | — | 1 |
| AS19162US | MBI-AS-1 - The Moody Bible Institute of Chicago | 4.1K | — | 1 |
| AS32694US | HBCOMM - H&B Communications Inc. | 4.1K | — | 15 |
| AS54324US | GSI-ASN - Geographic Solutions, Inc. | 4.1K | — | 3 |
| AS20469US | TRIMETNET - Tri-County Metropolitan Transit District | 4.1K | — | 1 |
| AS46699US | TWRS-HOU - Towerstream | 4.1K | — | 2 |
| AS27183US | NSD417 - Northshore School District | 4.1K | — | 1 |
| AS400514US | ESPACE-NETWORKS - ESpace Networks | 4.1K | — | 14 |
| AS201682US | LIQUID-WEB-BV Liquid Web B.V. | 4.1K | 65.5K | 5 |
| AS23339US | MU-ASN - Marymount University | 4.1K | — | 6 |
| AS54979US | ZEECON - Zeecon Wireless Internet L.L.C. | 4.1K | — | 1 |
| AS395098US | RFIH-NET1 - Retail Finance International Holdings, Inc. | 4.1K | — | 10 |
| AS11109US | SAISD-1 - State of Alabama, Office of Information Technology | 4.1K | — | 16 |
| AS396334US | ORU-ASN - Oral Roberts University | 4.1K | — | 9 |
| AS53294US | FOX-NEWS-CHANNEL-NETWORK - Fox News Channel | 4.1K | — | 15 |
| AS40200US | ASN-MUNSON-CHARTER-ATT - Munson Healthcare | 4.1K | — | 2 |