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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 | 21,022 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,223 |
| 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 | 3,586 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,933 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,550 |
| 11.3K |
| — |
| 4 |
| AS16491US | VIASAT - ViaSat, Inc. | 11.3K | 1 | 34 |
| AS13322US | FMR-AS3 - FMR LLC | 11.3K | — | 44 |
| AS11971US | PFIZERNET-GROTON - Pfizer Inc. | 11.3K | — | 6 |
| AS10668US | LEE-ASN - Lee Enterprises, Incorporated | 11.3K | — | 6 |
| AS40193US | AS-TRIT - Trit Networks, LLC | 11K | 65.6K | 11 |
| AS4452US | ZCORUM - ZCorum | 11K | 1 | 29 |
| AS10680US | IU-RESEARCH - Indiana University | 11K | 2 | 6 |
| AS21840US | NET3 - WiredISP Inc. | 11K | — | 43 |
| AS399646US | DARTNODE - Snaju Development | 11K | 86K | 36 |
| AS32034US | NEWCOM-INTL - SPEEDCAST LATAM INC. | 11K | — | 25 |
| AS22820US | CYBERA - Cybera, Inc. | 11K | — | 11 |
| AS395148US | PACLW - PACIFIC LIGHTWAVE, A CALIFORNIA CORPORATION | 11K | — | 24 |
| AS30167US | XCNETWORKS-30167 - XC Networks, Ltd. | 11K | — | 12 |
| AS40156US | THEOPT-HOU - The Optimal Link Corporation | 11K | 65.5K | 13 |
| AS21527US | DAYSTARR-NET - Daystarr Communications | 11K | 73.7K | 25 |
| AS6976US | VZN-VOL2 - Verizon Business | 11K | — | 11 |
| AS125US | HI-NET-AS - Honeywell International, Inc. | 11K | — | 30 |
| AS3931US | LOGICAL - Logical Net Corporation | 11K | — | 5 |
| AS394126US | ECSD-PUBLIC-ASN - The School District of Escambia County | 11K | — | 43 |
| AS20273US | WEBSTER-CALHOUN-ASN - WCCTA | 11K | 131.1K | 35 |
| AS16921US | INTELIGLOBE-1 - Inteliglobe USA, Inc. | 11K | 16.4K | 56 |
| AS14805US | DVA-USDC-DEN - DaVita HealthCare Partners Inc. | 11K | 17 | 15 |
| AS36489US | NETSOLUS-NETWORKS - IP Pathways, LLC | 11K | — | 8 |
| AS33509US | CASCADE-ACCESS-LLC-CA-ESTOR1 - Cascade Access, LLC | 11K | 65.5K | 20 |
| AS18882US | FLEXTR-AS - Flextronics International USA, Inc. | 11K | — | 12 |
| AS53907US | QTS-RIC - Quality Technology Services, LLC | 10.8K | 65.8K | 8 |
| AS393423US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 10.8K | 4.4K | 20 |
| AS36207US | EFI-NWCO-G - ELEKTRAFI INC. | 10.8K | — | 21 |
| AS19783US | APPRISS - APPRISS INC | 10.8K | 1 | 6 |
| AS396141US | BARC-CONNECTS - BARC Connects | 10.8K | 65.5K | 6 |
| AS40459US | SADDL-COMM - Saddleback Communications | 10.8K | — | 28 |
| AS46281US | WI-FIVE-BROADBAND - Wi-Five Broadband | 10.8K | — | 16 |
| AS21589US | CSJ-INTERNET - City of San Jose | 10.8K | 1 | 26 |
| AS15626US | GF-UA GREEN FLOID LLC | 10.8K | 262.1K | 37 |
| AS17029US | CHP-NET - California Highway Patrol | 10.8K | — | 11 |
| AS399439US | ATV-PUBLIC - Mitchell Telecom | 10.8K | — | 16 |
| AS18522US | YUMBRANDS - Yum! Brands, Inc. | 10.8K | — | 18 |
| AS31857US | ZFP-ASN-1 - Ziply Fiber | 10.8K | 65.5K | 9 |
| AS46635US | NET3-AI - Contact Consumers | 10.8K | — | 6 |
| AS40111US | PARKERFIBERNET-AS-ROUTE - Parker FiberNet, LLC | 10.8K | 65.5K | 17 |
| AS12056US | YUCCA-AS - Yucca Telecom | 10.8K | 65.5K | 21 |
| AS26534US | ABBVIE-2 - AbbVie, Inc. | 10.8K | — | 7 |
| AS106US | GDAIS-ASN-106 - General Dynamics Mission Systems, Inc. | 10.8K | — | 6 |
| AS400992US | ZHOUYISAT-COMMUNICATIONS - ZhouyiSat Communications | 10.8K | 9 | 45 |
| AS10991US | CAPGE-HOSTING-MRO - CAPGEMINI AMERICA, INC. | 10.8K | — | 41 |
| AS400301US | EVERGY-METRO-ASN-2 - Evergy Services, Inc. | 10.8K | — | 11 |