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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.9M | 20,988 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,222 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48M | 3,578 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,934 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.3M | 4,544 |
| 32K |
| 4 |
| 57 |
| AS22667US | VISTA - Vista Broadband Networks, Inc. | 32K | 65.5K | 18 |
| AS11766US | MERIPLEX-1-AS - Meriplex Communications, Ltd. | 32K | — | 23 |
| AS33667US | CMCS - Comcast Cable Communications, LLC | 32K | 524.3K | 90 |
| AS23158US | ETEX-COMMUNICATIONS - ETEX COMMUNICATIONS, LLC | 31.7K | — | 25 |
| AS22489US | DATABANK-CASTLEACCESS - Castle Access Inc | 31.7K | 65.5K | 34 |
| AS400268US | SWIFTCURRENT-CONNECT - Pierce Pepin Cooperative Services | 31.7K | 65.5K | 26 |
| AS26271US | CMSINTERNET - CMSInter.net LLC | 31.7K | 20.5K | 15 |
| AS22363US | PHMGMT-AS1 - Powerhouse Management, Inc. | 31.5K | 2 | 125 |
| AS22221US | NGIC-COMM - National General Management Corp. | 31.5K | — | 34 |
| AS27288US | DPCHICO-1 - Digital Path | 31.5K | 65.5K | 11 |
| AS6428US | CDM - CDM | 31.5K | 65.5K | 95 |
| AS63448US | HOLSTON-1 - HOLSTON ELECTRIC COOPERATIVE | 31.5K | — | 27 |
| AS2044US | DF-PTL1 - Digital Fortress | 31.2K | 65.5K | 13 |
| AS11138US | BEK-COMMUNICATIONS-INTERNET-ROUTER - BEK Communications Cooperative | 31.2K | — | 56 |
| AS16417US | IRONPORT-SYSTEMS-INC - Cisco Systems Ironport Division | 31.2K | 10 | 117 |
| AS17293US | VTXC - VTX Communications LLC | 31.2K | 131.1K | 38 |
| AS11704US | VTCI - Valley Telephone Cooperative, Inc. | 31K | — | 5 |
| AS11155US | DELIGHTSPEED-01 - DE LightSpeed | 31K | — | 33 |
| AS11712US | BELLSOUTH - AT&T Services, Inc. | 31K | — | 6 |
| AS25773US | RADWARE-CLOUD-SERVICES - RADWARE INC. | 31K | 18 | 139 |
| AS32601US | ACUNET-2 - Abilene Christian University | 31K | — | 9 |
| AS395035US | LIVEOAK-FIBER - LiveOak Fiber | 31K | 73.9K | 67 |
| AS17071US | UBSW-STAMFORD - UBS AG | 30.7K | — | 85 |
| AS18616US | NATURALWIRELESS - Natural Wireless, LLC | 30.7K | 65.5K | 14 |
| AS26042US | FIBERSTATE - FiberState, LLC | 30.7K | 74.9K | 143 |
| AS14743US | INTERNAP-BLOCK-4 - Unitas Global | 30.7K | 65.5K | 17 |
| AS46632US | SOUTHWEST-ARKANSAS-TELEPHONE-COOPERATIVE - Southwest Arkansas Telephone Cooperative | 30.7K | — | 28 |
| AS19237US | OMNIS - Omnis Network, LLC | 30.7K | 32.8K | 17 |
| AS23138US | FIRST-STEP - FIRST STEP INTERNET, LLC | 30.5K | 131.1K | 36 |
| AS30432US | STRATA-NETWORKS - STRATA NETWORKS | 30.5K | 65.5K | 15 |
| AS25720US | HONEYCOMB - Honeycomb Internet Services | 30.5K | 69.6K | 12 |
| AS6142US | SUN-JAVA - Oracle Corporation | 30.5K | 27.3K | 57 |
| AS11994US | CZIO-ASN - Cruzio | 30.5K | — | 13 |
| AS202623US | CLOUDFLARENET-CORE Cloudflare Inc | 30.2K | 14 | 24 |
| AS22125US | PFPC - PNC Bank N.A. | 30K | — | 36 |
| AS17252US | AS2-COLOAM - Colocation America Corporation | 30K | 65.5K | 13 |
| AS13984US | SD-DATA-CENTER - SD Data Center | 30K | 209.7K | 37 |
| AS11643US | EBAY - eBay, Inc | 29.7K | — | 15 |
| AS394161US | TESLA - Tesla Motors, Inc. | 29.7K | 13 | 96 |
| AS214413US | SecureLink WYOCORE TECHNOLOGIES LLC | 29.7K | — | 39 |
| AS46906US | GOSEMO-LLC - GoSEMO Fiber | 29.7K | 65.5K | 16 |
| AS19844US | SBA-EDGE-JAX - SBA Edge, LLC | 29.7K | 139.3K | 44 |
| AS11406US | CIGNA-1 - CIGNA | 29.7K | — | 22 |
| AS3379US | KAISER-NCAL - Kaiser Foundation Health Plan, Inc. | 29.7K | 65.5K | 38 |
| AS12008US | VERCARA - Vercara, LLC | 29.5K | 72 | 177 |
| AS17385US | ORBITEL - Orbitel Communications, LLC | 29.4K | — | 55 |