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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS20182US | ESSENTGTY001 - ESSENT GUARANTY, INC. | 512 | 17 | 4 |
| AS21569US | DBU-AS - Dallas Baptist University | 512 | — | 2 |
| AS46644US | SOCIAL-BLADE - Social Blade LLC | 512 | 2 | 4 |
| AS395695US | TEGNA-KPNX - TEGNA Inc. | 512 | — | 2 |
| AS54528US | RICHIE-USA - Richie Software USA, Inc. | 512 | 17 | 4 |
| AS12209US | GIROSOL - Girosol, Corp. | 512 | — | 2 |
| AS40061US | UL-ASN-LAX1 - UnitedLayer, LLC | 512 | 8.2K | 3 |
| AS62683US | PTC - PREFIL TEC, INC | 512 | — | 2 |
| AS39978US | REED-SMITH-ASN - REED SMITH LLP | 512 | — | 2 |
| AS18902US | CMC-II-LLC - CMC II, LLC | 512 | — | 2 |
| AS14939US | THRES - THRESHOLD COMMUNICATIONS,INC. | 512 | 8.2K | 4 |
| AS40216US | DSTIP - DSTIP Networks LLC | 512 | 258 | 5 |
| AS398351US | MAYMOBILITY - May Mobility, Inc | 512 | 2 | 4 |
| AS19694US | VHP-ASN - Vantage Health Plan, Inc. | 512 | 16 | 2 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS18833US | ASHP-NETWORK - American Specialty Health Plans of CA, Inc. | 512 | — | 2 |
| AS393236US | OCTANNER - O. C. TANNER COMPANY | 512 | — | 2 |
| AS12259US | EBOCOM - EBOCOM LLC | 512 | 3 | 5 |
| AS3914US | KMHP-AS-ARIN - Keystone Mercy Health Plan | 512 | — | 2 |
| AS62787US | SNARKNET - Snark Holding Corp. | 512 | 2 | 4 |
| AS394632US | CMC - Catholic Medical Center | 512 | — | 1 |
| AS40797US | EV-COG-01 - Easy Voice, LLC | 512 | — | 2 |
| AS27604US | SETONHILLUNIVERSITY - Seton Hill University | 512 | — | 1 |
| AS1803US | COGENT-1803 - Cogent Communications, LLC | 512 | — | 2 |
| AS401998US | CIRRUS-EXT - Cirrus Guest Services | 512 | 4.4K | 4 |
| AS46501US | WATCHGUARD-TECHNOLOGIES-INC - WatchGuard Technologies, Inc. | 512 | 1 | 3 |
| AS1050US | ONVOX - Onvox LLC | 512 | 260 | 7 |
| AS394656US | CPA-AS1 - Canaveral Port Authority | 512 | — | 2 |
| AS14570US | ANSIBLE-NTP - Ansible Networks, LLC | 512 | — | 2 |
| AS32579US | CITY-OF-VALLEJO - City of Vallejo, A municipal corporation | 512 | — | 2 |
| AS32606US | MARCUS-CORP - The Marcus Corporation | 512 | — | 2 |
| AS46733US | X6CNET - x6c | 512 | 2 | 4 |
| AS400447US | APOG-WAYLAND - Apogee Telecom Inc. | 512 | — | 2 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS47016US | EXTRON-ELECTRONICS - Extron Electronics | 512 | — | 2 |
| AS54683US | BSN-SPORTS - BSN Sports LLC | 512 | — | 2 |
| AS36054US | GLG-AS---GERSON-LEHRMAN-GROUP - Gerson Lehrman Group, Inc. | 512 | — | 2 |
| AS18577US | MIC-64 - ManTech International Corporation | 512 | — | 2 |
| AS36569US | KMBC-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS398381US | DC-ASN - Dallas, County Of | 512 | — | 2 |
| AS5US | SYMBOLICS - WFA Group LLC | 512 | — | 2 |
| AS394784US | MEEI-AS - Massachusetts Eye and Ear Infirmary | 512 | — | 2 |
| AS394040US | WELLS-ENTERPRISES - Wells Enterprises, Inc. | 512 | — | 2 |
| AS30403US | EL-ROCHESTER-NY - Ellucian Company LP | 512 | — | 2 |
| AS14528US | SHOTSPOTTER-01 - SHOTSPOTTER, INC. | 512 | — | 2 |
| AS773US | PARSONS-PGS-2 - Parsons Corporation | 512 | — | 2 |