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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 | 21,186 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| — |
| 1 |
| AS396837US | SEAA18 - North Carolina State Education Assistance Authority | 256 | — | 1 |
| AS16867US | BANDWIDTH-CORP - Bandwidth Inc. | 256 | 256 | 2 |
| AS401151US | MCOR-AS - Marion County | 256 | — | 1 |
| AS394119US | EXPERIMENTAL-COMPUTING-FACILITY - eXperimental Computing Facility Foundation | 256 | 4.1K | 3 |
| AS18698US | IAC-NYC-AS01 - Icahn Associates Corp. | 256 | — | 1 |
| AS21514US | LEGACY - LEGACY MARKETING PARTNERS, L.L.C. | 256 | — | 1 |
| AS395146US | OTVM-AS-01 - Optiv | 256 | — | 1 |
| AS402229US | ARIA-JAMES - Aria and James | 256 | — | 1 |
| AS63006US | TRUHEARINGWJ - TruHearing, Inc | 256 | — | 1 |
| AS397120US | CHEMUNGCONY - Chemung County, New York | 256 | — | 1 |
| AS400231US | ATCS-NETWORK - A.T.C.S. LLC | 256 | — | 1 |
| AS19427US | AS19427 - JBFCS | 256 | — | 1 |
| AS25965US | BRAMCO - BRAMCO, LLC | 256 | — | 1 |
| AS10939US | PMG1 - Paxton Media Group, LLC. | 256 | — | 1 |
| AS32447US | MARTI-AS - MARTIN RESOURCE MANAGEMENT CORP. | 256 | — | 1 |
| AS398409US | ESPVA - EyeCare Services Partners Management LLC | 256 | — | 1 |
| AS394884US | FAMOUS-SMOKE-AS - Famous Smoke Shop | 256 | — | 1 |
| AS395277US | ST-LUKES-HOSPITAL - Aspirus, Inc. | 256 | — | 1 |
| AS11076US | COMMUNITY-COMPUTER-SERVICE-INC - COMMUNITY COMPUTER SERVICE INC | 256 | — | 1 |
| AS394961US | SAINT-ANSELM-COLLEGE - Saint Anselm College | 256 | — | 1 |
| AS394756US | CONVO-DAL - Convo | 256 | 1 | 2 |
| AS4374US | CKE-RESTAURANTS - CKE Restaurants Holdings, Inc. | 256 | — | 1 |
| AS63458US | KGPTEL - KGP Telecommunications, Inc. | 256 | — | 1 |
| AS400901US | KLG-DATACENTER - Keller Logistics Group, INC | 256 | — | 1 |
| AS32384US | MILLERWELDSASN01 - MILLER Electric Mfg. Co. | 256 | — | 1 |
| AS198109US | HCA-AS Horizon Capital Advisors, LLC | 256 | — | 1 |
| AS402196US | AJAX - Ajax Networks, LLC | 256 | 512 | 3 |
| AS21672US | CES-HQPA-01 - Customized Energy Solutions, Ltd. | 256 | — | 1 |
| AS15235US | OMC-COGENT - The Old Mountain Company Inc. | 256 | 1 | 2 |
| AS402461US | KYRO-123 - KyroTelecom | 256 | — | 1 |
| AS402059US | TRSASN01 - Teachers' Retirement System of the City of New York | 256 | — | 1 |
| AS393851US | CURTIS - Taylor Corporation | 256 | — | 1 |
| AS23295US | NSWL-3-23295 - Northern Skies Wireless LLC | 256 | — | 1 |
| AS22485US | MONTANA-OPTICOM-AS22485 - Montana Opticom, LLC | 256 | — | 1 |
| AS398838US | STRAUB-COLLABORATIVE - Straub Collaborative, Inc. | 256 | 1 | 2 |
| AS62803US | UTDAS01 - UPTODATE, Inc. | 256 | — | 1 |
| AS15155US | SOUTHERN-FARM-BUREAU-LIFE-INSURANCE - Southern Farm Bureau Life Insurance Company | 256 | — | 1 |
| AS204644US | PDQ-RIPE PDQ.COM CORPORATION | 256 | — | 1 |
| AS62678US | HORACEMANNSCHOOL - Horace Mann School | 256 | — | 1 |
| AS18751US | BPL-B1 - Basketball Properties Ltd | 256 | — | 1 |
| AS401252US | TOMBALLISD - Tomball Independent School District | 256 | — | 1 |
| AS8021US | PCNET - Paradigm Communications Inc. | 256 | — | 1 |
| AS397891US | COLUMBUSHOSP-AS-01 - Columbus Community Hospital, Inc. | 256 | — | 1 |
| AS32649US | FE-DC-BGP - FRANKLIN ELECTRIC CO., INC. | 256 | — | 1 |
| AS400645US | AXXESS-NETWORKS2 - Axxess Networks LLC | 256 | — | 1 |
| AS215520US | JOSH-BOYD JOSHUA BOYD | 256 | 1 | 2 |