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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| GILBARCO-AS - Gilbarco, Inc. |
| 768 |
| — |
| 3 |
| AS395165US | MT-NETWORKS - Madison Telephone LLC | 768 | — | 3 |
| AS36506US | WA-ASN - Woodward Academy | 768 | — | 2 |
| AS27548US | USAN-AS-A - United States Advanced Network Inc. | 768 | — | 3 |
| AS23097US | COHEN-STEERS - COHEN & STEERS CAPITAL MGMT., INC. | 768 | — | 3 |
| AS30260US | NOBEL-129-30260 - NobelBiz, Inc. | 768 | — | 2 |
| AS396410US | CODE42-INCYDR - Code 42 Software | 768 | — | 2 |
| AS400733US | PDS-RW-ASN-01 - Pari Data Systems Inc. | 768 | — | 3 |
| AS33252US | BASSPRO-AS - Bass Pro, LLC. | 768 | — | 3 |
| AS27161US | LITNICS-01 - Litnics, LLC | 768 | — | 3 |
| AS7868US | DATA-LIFE - Data Life Associates, Inc. | 768 | — | 2 |
| AS62998US | USAZY - USAZY INC. | 768 | — | 3 |
| AS6924US | STARTRIB - Star Tribune | 768 | — | 3 |
| AS1062US | EMMETT-FIBER - City of Emmett | 768 | — | 3 |
| AS36798US | INFODIR - Info Directions, Inc. | 768 | — | 3 |
| AS18440US | NCCI - National Council on Compensation Insurance, Inc. | 768 | — | 3 |
| AS396285US | CBTS-AS-FGA - Cincinnati Bell Technology Solutions | 768 | — | 3 |
| AS18872US | VERITAS - Veritas Technologies LLC | 768 | 1 | 4 |
| AS14058US | PCT-AS01 - PointClick Technologies, LLC | 768 | 4.1K | 3 |
| AS32231US | PATHWARD - Pathward, N.A. | 768 | — | 3 |
| AS214206US | Four-Seasons-Hosting Four Seasons Hosting LLC | 768 | — | 3 |
| AS400167US | NORTHERN-WIRELESS - Northern Wireless | 768 | 256 | 3 |
| AS11363US | FUJITSU-NORTH-AMERICA-INC - Fujitsu North America, Inc. | 768 | — | 2 |
| AS27232US | OOMA INC - OOMA ENTERPRISE - Ooma, Inc. | 768 | — | 3 |
| AS44965US | CONTACTUAL 8x8 Inc | 768 | — | 3 |
| AS395067US | BRF - B. Riley Financial, Inc. | 768 | — | 3 |
| AS11012US | DDC-AS - The Digital Design Company | 768 | — | 2 |
| AS18628US | NYMEX - NEW YORK MERCANTILE EXCHANGE | 768 | — | 3 |
| AS401572US | ALTERAHEALTH-ASN01 - Altera Digital Health Inc. | 768 | — | 3 |
| AS394748US | CITYOFFORTCOLLINS - City of Fort Collins | 768 | — | 3 |
| AS54013US | VARONIS-US - Varonis Systems, Inc. | 768 | — | 3 |
| AS395972US | SCHREIBERFOODS - Schreiber Foods, Inc. | 768 | — | 3 |
| AS401903US | CRIMSON-PACIFIC-NETWORKS - Crimson Pacific Networks, LLC | 768 | 21 | 9 |
| AS32526US | CATALYSTCLOUD - CatalystVM LLC | 768 | — | 3 |
| AS54772US | KLEIN-ISD - Klein Independent School District | 768 | — | 3 |
| AS393471US | FOS-HOSTING - FOS Hosting, LLC | 768 | — | 3 |
| AS394933US | FIVERIVERSIT - Five Rivers IT, Inc. | 768 | — | 3 |
| AS395832US | IPRO-DA7 - IPro Media, Inc. | 768 | — | 3 |
| AS23472US | SONICWALL-BGP - SonicWALL, Inc. | 768 | — | 3 |
| AS400908US | XSTREAM-CABLE-TV - Videoport IPTV LLC | 768 | — | 3 |
| AS29912US | CITIZENS-PROPERTY-INSURANCE-CORPORATION - Citizens Property Insurance Corporation | 768 | — | 3 |
| AS399953US | METHOWNET-01 - Okanogan County Electric Cooperative, Inc. | 768 | — | 3 |
| AS401656US | ATINETWORKS-01 - ATI NETWORKS, INC. | 768 | — | 2 |
| AS40124US | AS-CHARGED - QuickMeg Inc | 768 | — | 3 |
| AS54203US | NETPROTECT-SP - Strong Technology, LLC. | 768 | 256 | 4 |
| AS30302US | ASPEN-DENTAL-INC - ASPEN DENTAL MANAGEMENT, INC. | 768 | — | 3 |
| AS40177US | THE-INSTITUTES - The Institutes | 768 | — | 2 |