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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| TWITTER - Twitter Inc. |
| 4.9K |
| — |
| 12 |
| AS11178US | RS-ACCESSPLUS - AccessPlus | 4.9K | 66.6K | 21 |
| AS11758US | IRISNETWORKS - IRIS Networks | 4.9K | 65.5K | 6 |
| AS62833US | HUDSONFIBERNET - Hudson Fiber Network, Inc | 4.9K | 65.5K | 25 |
| AS395359US | ITH-AS-1 - InTouch Health | 4.9K | 9 | 28 |
| AS396151US | STEWARDHEALTHCARE - Steward Health Care System LLC | 4.9K | — | 18 |
| AS11598US | RECOL-CT - Cloudsmart | 4.9K | 65.5K | 7 |
| AS30417US | BTIG-LLC - BTIG LLC | 4.9K | — | 16 |
| AS397797US | CITYOFMARSHALL-01 - City of Marshall | 4.9K | 65.5K | 9 |
| AS26120US | RHYTHMONE - RhythmOne, LLC | 4.9K | 1 | 4 |
| AS11698US | WIATEL - WESTERN IOWA TELEPHONE ASSOCIATION (A COOPERATIVE) | 4.9K | 65.5K | 5 |
| AS394957US | ZADARA-01 - Zadara Storage, Inc. | 4.9K | — | 17 |
| AS11228US | ARINC - ARINC INCORPORATED | 4.9K | 257 | 14 |
| AS26052US | ABN-AMRO-CLEARING-USA-LLC - Fortis Clearing Chicago LLC | 4.9K | — | 4 |
| AS10975US | NET-AIG - American International Group Data Center, Inc. | 4.9K | 4 | 19 |
| AS14616US | IVANET-AMSTERDAM - IBASIS INC. | 4.9K | 256 | 17 |
| AS394869US | APNC - Asia Pacific Network Corporation | 4.9K | — | 19 |
| AS2535US | BP - BP America, Inc. | 4.9K | — | 13 |
| AS393301US | STJOHNTELCO - ST. JOHN CO-OPERATIVE TELEPHONE AND TELEGRAPH COMPANY | 4.9K | 65.5K | 10 |
| AS40393US | CROSSLINKNETWORKS - Crosslink Networks LLC | 4.9K | — | 16 |
| AS36002US | GOMAMI - GoMami Networks | 4.9K | — | 17 |
| AS8143US | NEBUSRT - Neburst LLC | 4.9K | 5 | 21 |
| AS54053US | REALOGY-DDC - Realogy Group LLC | 4.9K | — | 19 |
| AS21678US | NEW-BREED - XPO Supply Chain, Inc. | 4.9K | — | 15 |
| AS26153US | BCBSSC - Blue Cross Blue Shield of South Carolina | 4.9K | — | 7 |
| AS21757US | HTC-COMM - HTC Communications | 4.9K | 65.5K | 9 |
| AS14184US | FTS-AS1 - FOX TELEVISION STATIONS, LLC | 4.9K | — | 19 |
| AS401288US | CL-BROADBAND - C&L Broadband Connect, LLC | 4.9K | 65.5K | 5 |
| AS27020US | PRIMET-INET-AS - Prime Therapeutics LLC | 4.9K | — | 11 |
| AS400856US | HILLENBRAND-INC - Hillenbrand, Inc. | 4.9K | 256 | 5 |
| AS25787US | ROWE-NETWORKS - Rowe Wireless Networks LLC | 4.9K | 65.5K | 11 |
| AS395747US | CLOUDFLARENET-SFO05 - Cloudflare, Inc. | 4.9K | 21 | 40 |
| AS4179US | CITY-OF-LA - City of Los Angeles | 4.9K | — | 19 |
| AS29787US | WEBFORCE - Web Force Systems | 4.9K | — | 16 |
| AS26385US | THE-UNIVERSITY-OF-VERMONT-MEDICAL-CENTER-1 - The University of Vermont Medical Center Inc | 4.9K | — | 19 |
| AS12087US | SALSGIVER - Salsgiver, Inc. | 4.9K | — | 19 |
| AS1757US | LEXIS-AS - RELX inc. | 4.9K | — | 16 |
| AS13938US | SSNC-AS - SS&C Technologies, Inc. | 4.9K | — | 12 |
| AS15347US | 15347 - IBEX Global Solutions | 4.9K | — | 11 |
| AS33177US | AS33177 - Kaleida Health | 4.9K | — | 7 |
| AS394056US | BIFIV - BIF IV | 4.9K | 73.7K | 15 |
| AS150717US | DEERECOMPANY-AS-AP - Deere & Company | 4.9K | — | 4 |
| AS55102US | NRG-NS-2 - NRG Energy, Inc. | 4.9K | — | 9 |
| AS23367US | AS-ADN - Adaptive Data Networks, LLC | 4.9K | 65.5K | 11 |
| AS62994US | LCLOUD - LITE CLOUD INC | 4.9K | — | 13 |
| AS30415US | SCG-BGP01 - Sarasota County Government | 4.9K | — | 4 |
| AS26001US | BLUIP - BLUIP INC | 4.9K | — | 9 |