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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 25,270 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,323 |
| 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.
32,193 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,009 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.5M | 4,230 |
| 4.6K |
| 17 |
| 34 |
| AS18795US | ULV-AS - University of La Verne | 4.6K | — | 3 |
| AS35873US | MOVE-NETWORKS - Move Networks, inc. | 4.6K | 1 | 12 |
| AS36165US | ITM-TELECOM - ITM TELECOM | 4.6K | — | 18 |
| AS32681US | BAM-AS-00 - Bay Area Mesh Inc. | 4.6K | 1 | 4 |
| AS12266US | SRN-HOSTING - StoreRunner, Inc. | 4.6K | 1 | 9 |
| AS36701US | STETSON-UNIVERSITY - Stetson University | 4.6K | — | 3 |
| AS10584US | TRADEWEB - TradeWeb, LLC | 4.6K | — | 17 |
| AS54448US | GREENFIELD-COMMUNICATIONS - Greenfield Communications, Inc. | 4.6K | — | 18 |
| AS31764US | OAKLAND-USD-NET - OAKLAND UNIFIED SCHOOL DISTRICT | 4.6K | 65.5K | 10 |
| AS4284US | CENTURYLINK-TSDS-FLTLHS - CenturyLink Communications, LLC | 4.6K | — | 3 |
| AS3571US | EY-AS - Ernst & Young LLP | 4.6K | — | 18 |
| AS15008US | AISG - AISG | 4.9K | — | 9 |
| AS13877US | WENDYS-DUBLIN - Wendy's International, Inc. | 4.9K | — | 4 |
| AS26385US | THE-UNIVERSITY-OF-VERMONT-MEDICAL-CENTER-1 - The University of Vermont Medical Center Inc | 4.9K | — | 19 |
| AS394056US | BIFIV - BIF IV | 4.9K | 73.7K | 15 |
| AS54300US | LIGHTSPEED-VOICE - Lightspeed Voice | 4.9K | — | 15 |
| AS395747US | CLOUDFLARENET-SFO05 - Cloudflare, Inc. | 4.9K | 21 | 40 |
| AS14184US | FTS-AS1 - FOX TELEVISION STATIONS, LLC | 4.9K | — | 19 |
| AS26153US | BCBSSC - Blue Cross Blue Shield of South Carolina | 4.9K | — | 7 |
| AS14616US | IVANET-AMSTERDAM - IBASIS INC. | 4.9K | 256 | 17 |
| AS54053US | REALOGY-DDC - Realogy Group LLC | 4.9K | — | 19 |
| AS21678US | NEW-BREED - XPO Supply Chain, Inc. | 4.9K | — | 15 |
| AS40393US | CROSSLINKNETWORKS - Crosslink Networks LLC | 4.9K | — | 16 |
| AS1757US | LEXIS-AS - RELX inc. | 4.9K | — | 16 |
| AS26120US | RHYTHMONE - RhythmOne, LLC | 4.9K | 1 | 4 |
| AS26001US | BLUIP - BLUIP INC | 4.9K | — | 9 |
| AS400856US | HILLENBRAND-INC - Hillenbrand, Inc. | 4.9K | 256 | 5 |
| AS62994US | LCLOUD - LITE CLOUD INC | 4.9K | — | 13 |
| AS10975US | NET-AIG - American International Group Data Center, Inc. | 4.9K | 4 | 19 |
| AS11758US | IRISNETWORKS - IRIS Networks | 4.9K | 65.5K | 6 |
| AS11228US | ARINC - ARINC INCORPORATED | 4.9K | 257 | 14 |
| AS7238US | MACROVISION-CORPORATION - Rovi Corporation | 4.9K | — | 12 |
| AS397388US | BBTC-ALASKA - Bristol Bay Telephone | 4.9K | 65.5K | 4 |
| AS36014US | ONE-STOP-INTERNET - One-Stop Communications of PA Inc | 4.9K | 65.5K | 9 |
| AS14333US | ORI-NET - On-Ramp Indiana, Inc. (ORI.NET) | 4.9K | 4 | 8 |
| AS53767US | ICASTCENTER - iCastCenter | 4.9K | 65.5K | 6 |
| AS11698US | WIATEL - WESTERN IOWA TELEPHONE ASSOCIATION (A COOPERATIVE) | 4.9K | 65.5K | 5 |
| AS22062US | GEOSTAR - GeoStar, LLC. | 4.9K | — | 10 |
| AS62958US | ADT-LLC - ADT LLC | 4.9K | — | 19 |
| AS26052US | ABN-AMRO-CLEARING-USA-LLC - Fortis Clearing Chicago LLC | 4.9K | — | 4 |
| AS393568US | ITT-CORPORATION - ITT Corporation | 4.9K | — | 12 |
| AS53780US | AS-APPRIVER - APPRIVER LLC | 4.9K | — | 8 |
| AS13938US | SSNC-AS - SS&C Technologies, Inc. | 4.9K | — | 12 |
| AS1097US | CORE-TRANSIT - Core Transit LLC | 4.9K | 16.4K | 23 |
| AS11178US | RS-ACCESSPLUS - AccessPlus | 4.9K | 66.6K | 21 |
| AS63179US | TWITTER - Twitter Inc. | 4.9K | — | 12 |