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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| COFFEYCAN - Burlington USD #244 |
| 256 |
| — |
| 1 |
| AS36527US | RINCON-WIRELESS - Rincon Wireless | 256 | — | 1 |
| AS46245US | NIFCO-ASN-01 - NIFCO America | 256 | — | 1 |
| AS11527US | X0R - Xproxies | 256 | 65.5K | 2 |
| AS40704US | DLFI - Delphi Capital Management, Inc. | 256 | — | 1 |
| AS400974US | HMG-MA-01 - Kia America, Inc. | 256 | — | 1 |
| AS26738US | DEERFIELD - Deerfield Partners, L.P. | 256 | — | 1 |
| AS23055US | CITYOFNAMPA - City of Nampa | 256 | — | 1 |
| AS30037US | AS30037 - Fiserv Solutions, LLC | 256 | 1 | 2 |
| AS36774US | AS-36774 - Intuit Inc. | 256 | — | 1 |
| AS401828US | ARLINGTON-TV-COOPERATIVE - Arlington T-V Cooperative, Inc | 256 | — | 1 |
| AS14936US | CLOUDHQDATACENTERS - CloudHQ, LLC | 256 | — | 1 |
| AS401340US | HCIFIRSTASNAME - Hussey Communications Inc | 256 | — | 1 |
| AS402674US | GTRANSLATE-AS1 - GTRANSLATE | 256 | — | 1 |
| AS62912US | VICTORIA-COLLEGE - Victoria College | 256 | — | 1 |
| AS402546US | RACKBYTE - RackByte | 256 | 65.5K | 3 |
| AS394028US | DLVR - DLVR, Inc. | 256 | — | 1 |
| AS11881US | CNANDC-01 - CNA National Warranty Corporation | 256 | — | 1 |
| AS23347US | ZYC - ZYC Network LLC | 256 | 263 | 6 |
| AS401438US | NETFABRIC-01 - NetFabric, LLC | 256 | — | 1 |
| AS397791US | PROASSURANCE - ProAssurance Corporation | 256 | — | 1 |
| AS395284US | SHENKMANCAPITAL - Shenkman Capital Management, Inc. | 256 | — | 1 |
| AS398881US | SFG-199-33-226 - SFG, LLC | 256 | — | 1 |
| AS32764US | CPN - CSN Support Services | 256 | 1 | 2 |
| AS18824US | PCCA-HQ - Plains Cotton Cooperative Association | 256 | — | 1 |
| AS23213US | THRIVE-CA4-MTL - Thrive Operations, LLC | 256 | — | 1 |
| AS14427US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | 4.1K | 3 |
| AS398702US | SRH-ASN - Scottish Rite Hospital for Children | 256 | — | 1 |
| AS53888US | RPA-ASN - RUBIN POSTAER AND ASSOCIATES | 256 | — | 1 |
| AS18437US | PITT-OHIO-EXPRESS-AS - Pitt-Ohio Express, LLC. | 256 | 3 | 4 |
| AS40240US | FCBOE - Fayette County Board of Education | 256 | — | 1 |
| AS400855US | AVD-PRINCETON - Advantage Voice & Data, LLC | 256 | — | 1 |
| AS394552US | TRSTPT-AS - TrustPoint International | 256 | — | 1 |
| AS54367US | RILIN - State of Rhode Island General Assembly | 256 | — | 1 |
| AS36340US | CITY-OF-TOLEDO - City of Toledo | 256 | — | 1 |
| AS40118US | THIRD-POINT-LLC - Third Point LLC | 256 | — | 1 |
| AS32118US | AS-SMARTHEALTH - Smart Practice | 256 | — | 1 |
| AS395427US | PH-LSK-003 - Parker Hannifin Corporation | 256 | — | 1 |
| AS32627US | BIDS-TRADING - BIDS Trading L.P. | 256 | — | 1 |
| AS394257US | SPRINGFIELDCLINIC - Springfield Clinic, LLP | 256 | — | 1 |
| AS20387US | SHAKECLOUD - Shake Cloud Inc | 256 | — | 1 |
| AS916US | STALWART-ASN-01 - Stalwart Wireless | 256 | 256 | 2 |
| AS401977US | SNC-TUOL - Sierra Nevada Communications | 256 | — | 1 |
| AS398062US | SPTA-1-AS-1 - Southeastern Pennsylvania Transportation Authority | 256 | — | 1 |
| AS56773US | mox Mox Networks, LLC | 256 | — | 1 |
| AS26098US | GAA - Greensboro Auto Auction | 256 | — | 1 |
| AS401492US | WINDING-RIVERS-LIBRARY-SYSTEM - Winding Rivers Library System | 256 | — | 1 |