To comply online, use the official :

The number "139.2" refers to the specific IP-based URL address ( http://164.100.139 ) that was historically used to access the . While the government has migrated many services to the centralized vahan.parivahan.gov.in domain, this specific link is still frequently used by transporters and commercial vehicle owners to: Pay National Permit taxes. Check the status of a National Permit. Download the NP Authorization (Form 48). Official Access Links

The "Vahan 139 2 link" typically refers to Rule 139 of the Central Motor Vehicles Rules (CMVR)

: This appears to be a numerical value. Without context, it's hard to determine its significance, but it could refer to anything from a page number, a specific section in a document, a measurement, or even a code.