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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. | 217.9M | 23,731 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,144 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,838 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,313 |
| NS - NetSpeed LLC |
| 13.3K |
| 20.5K |
| 65 |
| AS29979US | PWN-ASBLK - Pioneer Broadband | 13.3K | — | 4 |
| AS22843US | PROOFPOINT-ASN-US-EAST - Proofpoint, Inc. | 13.3K | 4 | 49 |
| AS10685US | ASA5COM - A5.COM | 13.3K | — | 6 |
| AS395337US | MACST-VEGAS - MacStadium, Inc. | 13.3K | 8.2K | 10 |
| AS30387US | NIH-NET-NCCS - National Institutes of Health | 13.3K | — | 12 |
| AS63150US | BAGE - BAGE CLOUD LLC | 13.3K | 2.8K | 102 |
| AS1410US | CELLONE-IP - SMITH BAGLEY INC | 13.3K | — | 19 |
| AS19211US | HOSTINGYARD - HostingYard LLC | 13.3K | — | 29 |
| AS395784US | MERS-ASN - MERSCORP Holdings, Inc. | 13.3K | — | 30 |
| AS5842US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 13.3K | — | 10 |
| AS22186US | CENTURYLINK-LEGACY-EMBARQ-KSGRNR - CenturyLink Communications, LLC | 13.3K | — | 3 |
| AS49532US | SERVERHUB-NL Eonix Corporation | 13.3K | 65.5K | 20 |
| AS19754US | FNL-33-19754 - The Fusion Network, LLC | 13.3K | 65.5K | 48 |
| AS11406US | CIGNA-1 - CIGNA | 13.3K | — | 21 |
| AS21960US | SSS-LLC - SafeSoft Solutions, Inc. | 13.3K | — | 14 |
| AS11168US | SCC - SMART CHOICE COMMUNICATIONS, LLC | 13.3K | — | 20 |
| AS18883US | FIBERNET-NETWORK-OPERATIONS-CENTER - FiberNet Communications L.C. | 13.3K | 65.5K | 42 |
| AS1294US | NTTDATA-SERVICES-AS1 - NTT DATA Services Holdings Corporation | 13.3K | — | 15 |
| AS11767US | QTS-MIA - Quality Technology Services, LLC | 13.3K | 65.5K | 10 |
| AS6954US | NACS-AS6954 - New Age Consulting Service, Inc. | 13.1K | — | 5 |
| AS396028US | VIDANTHEALTH - Vidant Health | 13.1K | — | 10 |
| AS15175US | ACC-1 - Advanced Cabling and Communications | 13.1K | — | 7 |
| AS398052US | MECHANICSVILLE - Mechanicsville Telephone Company | 13.1K | 65.5K | 26 |
| AS397422US | MINET01 - MINET | 13.1K | — | 30 |
| AS3145US | RFT-AS - Refinitiv US LLC | 13.1K | — | 18 |
| AS15320US | PRIMELINK - FirstLight Fiber, Inc. | 13.1K | — | 5 |
| AS26241US | 3ZNET-CVG001 - 3z.net | 13.1K | — | 18 |
| AS21541US | 101NETLINK - 101Netlink | 13.1K | — | 19 |
| AS398576US | PCBPRTLND - Premium Choice Broadband | 13.1K | — | 32 |
| AS400536US | NODESTOP-LLC - Nodestop LLC | 13.1K | — | 51 |
| AS26857US | TRUSTCOMM-AS - TrustComm, Inc. | 13.1K | — | 19 |
| AS63178US | MPRTC-ISP - Mid-Plains Rural Telephone Cooperative, Inc. | 13.1K | — | 27 |
| AS7346US | SPRINGTIDE-AS - Springtide Communications | 13.1K | — | 47 |
| AS14446US | CNT-ASN - Central Newspapers Technologies Inc. | 13.1K | — | 5 |
| AS36776US | FIVE9 - Five9 Inc. | 13.1K | — | 43 |
| AS398774US | CUP-3 - Pennsylvania Western University | 13.1K | — | 4 |
| AS25840US | CASCADE-ACCESS-LLC-CA-ESTOR1 - Cascade Access, LLC | 13.1K | — | 13 |
| AS20128US | IN2 - iN2 LLC | 13.1K | 131.1K | 12 |
| AS31996US | ZOOMTC - Zoom Telcom, LLC | 13.1K | — | 33 |
| AS393737US | PLAINSINTERNET - Cpuonsite | 13.1K | 65.5K | 31 |
| AS22575US | MASSMUTUAL2 - Massachusetts Mutual Life Insurance Company | 13.1K | — | 5 |
| AS16410US | DKM3-ARIN - The Reynolds and Reynolds Company | 13.1K | — | 45 |
| AS26397US | OPTIPUTER - The Regents of the University of California - University of California, San Diego. | 13.1K | — | 4 |
| AS19746US | MMU-FIBER - Marshall Municipal Utilities | 12.8K | — | 25 |
| AS16578US | DATANOC - Lanset America Corporation | 12.8K | 4 | 54 |
| AS4514US | PVSCHOOLS-ASN-01 - Paradise Valley Unified School District | 12.8K | — | 3 |