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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| TRAVCHIS - TRAVCHIS, LLC |
| 21.5K |
| — |
| 52 |
| AS53292US | MWAY - ManagedWay | 21.5K | 131.1K | 46 |
| AS394395US | TOWSON-UNIVERSITY - Towson University | 21.5K | — | 3 |
| AS394437US | PSLIGHTWAVE - PS Lightwave | 21.5K | 65.5K | 63 |
| AS46719US | COMCELL4236207 - COMCELL INC. | 21.5K | — | 25 |
| AS7832US | PCI FIBER ASN-1 - PCI Fiber, LLC | 21.5K | — | 35 |
| AS394111US | FRTCCNET - Foothills Rural Telephone Cooperative Corporation, Inc. | 21.5K | 65.5K | 9 |
| AS23418US | DARIENAS1 - The Darien Telephone Co. Inc. | 21.5K | — | 6 |
| AS33067US | CLASSICSOUTHCOMM - Classic South Communications, L.L.C. | 21.5K | — | 12 |
| AS14383US | VCS-AS - M3COM of Virginia, Inc | 21.5K | — | 17 |
| AS13388US | EGYPTIAN-TELEPHONE - Egyptian Telephone | 21.5K | — | 6 |
| AS25651US | GRTI-NW - Gila River Telecommunications Inc. | 21.5K | 1 | 35 |
| AS3376US | MCI-ASN - Verizon Business | 21.5K | — | 4 |
| AS30110US | ADVANCED-COMMUNICATIONS-TECHNOLOGY - Advanced Communications Technology | 21.5K | 65.5K | 4 |
| AS15065US | SLIC-COM-INTERNET - Slic Network Solutions, Inc | 21.5K | — | 53 |
| AS46746US | SECURE-24-AS - NTT Managed Services Americas, LLC | 21.3K | — | 52 |
| AS63474US | SIRIUS-DATACENTERS - Sirius Computer Solutions, Inc. | 21.2K | — | 20 |
| AS6071US | UNISYS-AS-E - Unisys Corporation | 21.2K | — | 6 |
| AS396443US | WESTERN-IOWA-NETWORKS-396443 - Western Iowa Networks | 21.2K | 65.5K | 63 |
| AS16823US | NORTEXNET - Nortex Communications Company | 21.2K | — | 21 |
| AS40861US | PARAD-40-ASN - Paradise Networks LLC | 21.2K | — | 83 |
| AS26978US | QTS-PHX - Quality Technology Services, LLC | 21.2K | — | 9 |
| AS7970US | LEON-FL-SCHL - Leon County School District | 21.2K | — | 6 |
| AS16698US | NP-TECH - NP Tech | 21.2K | — | 24 |
| AS399837US | ALTAMAHA-FIBER - Altamaha Fiber | 21.2K | — | 37 |
| AS36394US | ASN-GRID4-GATEWAYS - Grid4 Communications, Inc | 21K | — | 13 |
| AS31753US | INMARSAT-GOVERNMENT-1 - Inmarsat Government | 21K | — | 17 |
| AS40430US | COLO4JAX-AS - colo4jax, LLC | 21K | — | 8 |
| AS46115US | LUTHER - Luther College | 21K | — | 36 |
| AS395567US | BLOXNET - dcBLOX, Inc. | 21K | 4.1K | 47 |
| AS14904US | KYN-GTS - Kyndryl | 21K | — | 13 |
| AS17012US | PAYPAL - PayPal, Inc. | 21K | 16 | 25 |
| AS54240US | SN-2006 - Syndeo Networks, Inc | 21K | — | 15 |
| AS63172US | VENTURE-COMM - Venture Communications Cooperative | 21K | 65.5K | 22 |
| AS46811US | SILVERIP-ASN - SilverIP Communications Inc. | 20.7K | 65.5K | 44 |
| AS20330US | NYS-UNIFIED-COURTS - New York State Unified Court System | 20.7K | — | 9 |
| AS36426US | ISOTRASN - IsoTropic Networks, Inc. | 20.7K | — | 17 |
| AS17139US | COLORADOCOLO - Corporate Colocation Inc. | 20.7K | 65.5K | 39 |
| AS19113US | DUKE-ENERGY - Duke Energy Corporation | 20.7K | — | 14 |
| AS33606US | C-SPIRE-BUSINESS - TekLinks, Inc. | 20.7K | 65.5K | 24 |
| AS63414US | DAKTEL-AS1 - Dakota Central Telecommunications Cooperative | 20.7K | 65.5K | 18 |
| AS16498US | LASALLE - LaSalle University | 20.7K | — | 3 |
| AS19036US | LORAL-CYBERSTAR - Telesat Network Services Inc | 20.7K | — | 4 |
| AS36687US | WILINE - WiLine Networks Inc. | 20.7K | 65.5K | 11 |
| AS394474US | WHITELABELCOLO393 - WhiteLabelColo | 20.7K | — | 12 |
| AS33055US | BCC-65-182-96-0-PHX - Brinkster Communications Corporation | 20.7K | — | 9 |
| AS11013US | BLUE-AS - WideOpenWest Finance LLC | 20.7K | — | 5 |