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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 |
| 512 |
| 6 |
| AS393220US | ARIN-PFS-SJC - ARIN Operations | 256 | 1 | 2 |
| AS397859US | TNMINC-1 - TANIUM INC | 256 | — | 1 |
| AS36065US | MEDIA78-LLC - Media78 LLC | 256 | — | 1 |
| AS399434US | SFCC-EDU - Santa Fe Community College | 256 | — | 1 |
| AS40302US | SPOTSYLVANIA-COUNTY - Spotsylvania County Government | 256 | — | 1 |
| AS62783US | HOTTOPIC - Hot Topic Inc. | 256 | — | 1 |
| AS402956US | IOVANTA - IOVANTA | 256 | — | 1 |
| AS209706US | magoodsllc M&A GOODS LLC | 256 | — | 1 |
| AS33540US | ALZHEI-ASN - Alzheimers Assoc. | 256 | — | 1 |
| AS401756US | SWANROE - Swanroe Internet Cooperative LLC | 256 | 4.1K | 2 |
| AS399050US | ROW-CAB-01 - Rowan-Cabarrus Community College | 256 | — | 1 |
| AS393765US | MVHS - Faxton St Luke's Healthcare | 256 | — | 1 |
| AS399148US | ZETALINK - Zetalink | 256 | — | 1 |
| AS18728US | ISINJ - Instructional Systems Inc. | 256 | — | 1 |
| AS54724US | GAITHERSBURGMDGOV - City of Gaithersburg | 256 | — | 1 |
| AS11074US | CROWNCASTLE-AS11074 - Crown Castle Fiber LLC | 256 | — | 1 |
| AS399797US | NEXTLINK - NextLink | 256 | 1 | 2 |
| AS27306US | MTASCUTNEYHOSPITALANDHEALTHCENTER - Dartmouth Hitchcock Medical Center | 256 | — | 1 |
| AS62971US | COUNTY-OF-CHESTERFIELD-VA - County of Chesterfield | 256 | — | 1 |
| AS11267US | PEIRCE-PHELPS - Peirce-Phelps, Inc. | 256 | — | 1 |
| AS20071US | KUXUEYUN-US - KUXUEYUN LLC | 256 | 17 | 3 |
| AS399922US | ST-AUG-NC - Apogee Telecom Inc. | 256 | — | 1 |
| AS29756US | RPEAS - RPE Outsourcing | 256 | — | 1 |
| AS399592US | IGO-TECHNOLOGY - iGo Technology, Inc. | 256 | — | 1 |
| AS31900US | CITYOFTHORNTON - City of Thornton | 256 | — | 1 |
| AS31870US | ASN-BELL3 - Bell Bank | 256 | — | 1 |
| AS40233US | SLOM-INC - SLOMIN'S INC. | 256 | — | 1 |
| AS12077US | SUBCONSCIOUS - Subconscious | 256 | 256 | 2 |
| AS398151US | ASN-FOR-MULTIHOMING - LYLAB Technology Solutions, Inc. | 256 | — | 1 |
| AS402664US | EHOCGL - Evergreen | 256 | 2.6M | 6 |
| AS399818US | LAER-AS-DEN1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS14518US | BIMR-LJ - Sanford Burnham Prebys Medical Discovery Institute | 256 | — | 1 |
| AS3443US | ESNET-AS - ESnet | 256 | — | 1 |
| AS19669US | SCS - Steel City Signal | 256 | — | 1 |
| AS7349US | AS-TIERP-7349 - TierPoint, LLC | 256 | — | 1 |
| AS55283US | FHN-ASN-01 - FHN | 256 | — | 1 |
| AS27246US | SAUCON-AS - SAUCON TECHNOLOGIES, INC | 256 | — | 1 |
| AS19532US | TRILLIANTNC - Trilliant Networks Inc. | 256 | 1 | 2 |
| AS398261US | MCCC-MONROE-MI - Monroe County Community College | 256 | — | 1 |
| AS54066US | WURTHBSC - Wurth Baer Supply Company | 256 | — | 1 |
| AS395909US | KAWAII-NETWORKS-CARRIER - Kawaii Networks LLC | 256 | 32.8K | 8 |
| AS22218US | US-MARLINK - Marlink, Inc. | 256 | — | 1 |
| AS11243US | HALAR-ATG1 - Advanced Technologies Group | 256 | — | 1 |
| AS32683US | WAREHOUSE-DIRECT-OFFICE-PRODUCTS - Warehouse Direct Office Products | 256 | — | 1 |
| AS393557US | PCMC - Park City Municipal Corporation | 256 | — | 1 |
| AS402697US | IMTX-01 - IMTX | 256 | 256 | 2 |