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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS396152US | MC-AS - The Monroe Clinic, Inc. | 256 | 1 | 2 |
| AS402553US | CAV-PROD-AS-01 - Cavnue | 256 | 1 | 2 |
| AS11457US | DIGITALREALTY-IT-03 - Digital Realty Trust, L.P. | 256 | — | 1 |
| AS19537US | UPPER-ARLINGTON-SCHOOLS-OH - Upper Arlington City School District | 256 | 256 | 2 |
| AS399421US | EMI-HEALTH - EDUCATORS MUTUAL INSURANCE ASSOCIATION | 256 | — | 1 |
| AS401404US | VIPERHOST-LLC - ViperHost LLC | 256 | — | 1 |
| AS394628US | SQUARE-CORP - Square, Inc. | 256 | 65.5K | 4 |
| AS32384US | MILLERWELDSASN01 - MILLER Electric Mfg. Co. | 256 | — | 1 |
| AS397703US | APOG-GRAMBLING - Apogee Telecom Inc. | 256 | — | 1 |
| AS36743US | AUSRA-SYSTEMS - Ausra LLC | 256 | 18 | 4 |
| AS46181US | MAXXSOUTH-BROADBAND - BCI Mississippi Broadband,LLC | 256 | — | 1 |
| AS16956US | CATTARAUGUS-COUNTY - Cattaraugus County | 256 | — | 1 |
| AS16926US | KITTY-NETWORK - KittyTransit LLC | 256 | 64 | 5 |
| AS20395US | MEDFUSION-LEWISVILLE - Med Fusion, LLC | 256 | — | 1 |
| AS399329US | ENDRIES-ASN-01 - Endries International, Inc. | 256 | — | 1 |
| AS40798US | WALLACE-HARDWARE - Wallace Hardware Co., Inc. | 256 | — | 1 |
| AS55250US | IQVIA-KIRKLAND - IQVIA Holdings Inc | 256 | — | 1 |
| AS393550US | SVDH-ASN - Sierra View District Hospital | 256 | — | 1 |
| AS29788US | TELIANCE-COMMUNICATIONS - Teliance Communications Inc | 256 | — | 1 |
| AS27356US | PCCU-ASN-207-SUBNET - Park Community Credit Union, Inc. | 256 | — | 1 |
| AS400761US | MUN-NIDR - PIMCO | 256 | — | 1 |
| AS401455US | CLEARLINE-COMMUNICATIONS-INC - Clearline Communications, Inc. | 256 | — | 1 |
| AS399433US | AS-MS-78058 - Blue Cross Blue Shield of Illinois or Blue Cross Blue Shield of Texas | 256 | — | 1 |
| AS32128US | ASN-RICHLINE-NY - Richline Group Inc | 256 | — | 1 |
| AS401068US | 2L2O - 2l2o, LLC | 256 | — | 1 |
| AS396301US | YETI-COOLERS - YETI Coolers, LLC | 256 | — | 1 |
| AS15253US | SDSHERIFF-2 - SDSO | 256 | — | 1 |
| AS395804US | GRH - Grande Ronde Hospital, Inc. | 256 | — | 1 |
| AS64241US | WOBSCALE - Wobscale Technologies, LLC | 256 | 3 | 4 |
| AS27457US | SLG-2 - SL Green Realty Corp | 256 | — | 1 |
| AS394875US | FASTTECH - Fast Technologies Inc. | 256 | — | 1 |
| AS397736US | BEACON-FCU - Beacon Federal Credit Union | 256 | 16 | 2 |
| AS32456US | WALBRIDGE-ALDINGER-CO-DTW - Walbridge Aldinger Company | 256 | — | 1 |
| AS393502US | XL-19 - Zenlayer Inc | 256 | — | 1 |
| AS35856US | LWCC - Louisiana Workers' Compensation Corporation | 256 | — | 1 |
| AS36362US | MAIL-AMERICA-COMMUNICATIONS-INC - Mail America Communications, Inc | 256 | — | 1 |
| AS26513US | TGS-ASN-01 - TGS-NOPEC Geophysical Company | 256 | — | 1 |
| AS399198US | OKCCC - Oklahoma City Convention Center | 256 | — | 1 |
| AS10939US | PMG1 - Paxton Media Group, LLC. | 256 | — | 1 |
| AS395607US | CASEYS-CORP - Casey's Retail Company | 256 | — | 1 |
| AS393928US | HILLIARD-CITY-SCHOOLS-AS - Hilliard City School District | 256 | — | 1 |
| AS21809US | LNRP - LNR Property Corp | 256 | — | 1 |
| AS400326US | NETFIRE-NFFIBER01 - NetFire, LLC | 256 | — | 1 |
| AS22455US | ESL-FCU - ESL Federal Credit Union | 256 | — | 1 |
| AS402479US | DECENTRA - Decentra | 256 | — | 1 |
| AS16867US | BANDWIDTH-CORP - Bandwidth Inc. | 256 | 256 | 2 |