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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS12286US | SOUTHTECH - South Tech LLC | 256 | 256 | 2 |
| AS400316US | MN-ADULT-AND-TEEN-CHALLENGE - Minnesota Adult & Teen Challenge | 256 | 1 | 2 |
| AS401328US | FASTWIRELESSLLC - Fast Wireless LLC | 256 | 1 | 2 |
| AS43074US | MHS-331-43074 - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS395159US | BOULDER-COMMUNITY-HEALTH - Boulder Community Hospital | 256 | — | 1 |
| AS395722US | NEWRELIC-AS-2 - New Relic | 256 | — | 1 |
| AS26839US | CBS-FULTON - CREDIT BUREAU SYSTEMS | 256 | — | 1 |
| AS33103US | OPENMARKET-INC-2 - Infobip | 256 | — | 1 |
| AS397154US | GRANULES-CONSUMER-HEALTH-NET - Granules Consumer Health | 256 | — | 1 |
| AS46299US | LITTLETON-AS - City of Littleton | 256 | — | 1 |
| AS26902US | CEKKENT - Cekkent LLC | 256 | 256 | 2 |
| AS399875US | SIMONMED-PUBLIC - SimonMed Imaging | 256 | — | 1 |
| AS26032US | TRPC7 - TEST RITE PRODUCTS CORP. | 256 | — | 1 |
| AS26220US | ANALYSISGROUP - Analysis Group, Inc. | 256 | — | 1 |
| AS394257US | SPRINGFIELDCLINIC - Springfield Clinic, LLP | 256 | — | 1 |
| AS400000US | PCB - PCB Piezotronics, Inc. | 256 | — | 1 |
| AS63302US | MFAB - Museum Of Fine Arts Boston | 256 | — | 1 |
| AS13852US | AS-PCI-01 - Peppermill Casinos, Inc. | 256 | — | 1 |
| AS46087US | ASN-UDHUDOIG-01 - U.S. Department of Housing and Urban Development - Office of Inspector General | 256 | 1 | 2 |
| AS398205US | WSFARMS-LRO-01 - Sanderson Farms, Inc. | 256 | — | 1 |
| AS394570US | ALASU - Alabama State University | 256 | 65.5K | 2 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS2738US | AS-SHIELDS-COM - Shields Health Care Group | 256 | — | 1 |
| AS22028US | TEXAS-LIFE-HOME-OFFICE - Texas Life Insurance Company | 256 | — | 1 |
| AS398771US | FLASHTALKING - Flashtalking, Inc. | 256 | — | 1 |
| AS397767US | WEISSMAN-THEATRICAL-SUPPLY - Weissman's Theatrical Supplies, Inc. | 256 | — | 1 |
| AS30138US | ARTECH-INFO - Artech Information Systems LLC | 256 | — | 1 |
| AS400140US | NTTDATA-TAG-LNK - Transaction Applications Group, Inc. | 256 | — | 1 |
| AS398330US | ABERYTHMIC - Aberythmic, LLC | 256 | 16 | 2 |
| AS25663US | PRIDEMOBILITY - Pride Mobility Products Corporation | 256 | — | 1 |
| AS402778US | ATABYTE - Atabyte | 256 | — | 1 |
| AS399741US | BN-AS-01 - BAE Networks | 256 | — | 1 |
| AS16764US | THE-RAINE-GROUP-LLC - The Raine Group LLC | 256 | — | 1 |
| AS14096US | FIRSTRATE-ARL-TEXAS-AS - First Rate, Inc. | 256 | — | 1 |
| AS401876US | WBC-ASN-02 - Weigel Broadcasting Co | 256 | — | 1 |
| AS40228US | LLL-NBRK - Levin & Levy, LLP | 256 | — | 1 |
| AS30495US | MTS-LLC - MTS | 256 | — | 1 |
| AS54367US | RILIN - State of Rhode Island General Assembly | 256 | — | 1 |
| AS33553US | SOUNDTRANSIT - SOUND TRANSIT | 256 | — | 1 |
| AS400977US | JCSMH-ASN-01 - Schneck Medical Center | 256 | — | 1 |
| AS23347US | ZYC - ZYC Network LLC | 256 | 263 | 6 |
| AS16937US | PVS-AS - Penske Vehicle Services, Inc. | 256 | — | 1 |
| AS547US | ASN-IBM-LEX - IBM | 256 | — | 1 |
| AS55269US | CST - Critical Signal Technologies, Inc | 256 | — | 1 |
| AS401045US | KNOXCOGOVT-01 - Knox County Government | 256 | — | 1 |
| AS40323US | VAFB - Virginia Farm Bureau Mutual Insurance Company | 256 | — | 1 |