The resource used to determine the network range of the target network is:

The resource used to determine the network range of the target network is:

• A. DNS records
• B. ARIN
• C. IP2Location
• D. Thin Whois

Answer: (B)

Determining the network range of a target is about finding the allocated IP block (netblock) that the organization owns. This information is maintained in the regional Internet registry’s WHOIS database. For North America, that registry is ARIN. By querying ARIN with the target’s IP address or ASN, you can retrieve the netblock(s) that define the exact range the organization has been allocated. This netblock is the authoritative source for the network range and is what you’d use for mapping, routing, or targeted scanning in a legitimate assessment. DNS records simply map domain names to individual IPs, not the entire allocated range. IP2Location offers geolocation data for IPs, which can be approximate and not reliable for exact netblocks. Thin Whois provides limited information and often lacks full netblock details. Therefore ARIN is the appropriate resource to determine the network range.

Determining the network range of a target is about finding the allocated IP block (netblock) that the organization owns. This information is maintained in the regional Internet registry’s WHOIS database. For North America, that registry is ARIN. By querying ARIN with the target’s IP address or ASN, you can retrieve the netblock(s) that define the exact range the organization has been allocated. This netblock is the authoritative source for the network range and is what you’d use for mapping, routing, or targeted scanning in a legitimate assessment.

DNS records simply map domain names to individual IPs, not the entire allocated range. IP2Location offers geolocation data for IPs, which can be approximate and not reliable for exact netblocks. Thin Whois provides limited information and often lacks full netblock details. Therefore ARIN is the appropriate resource to determine the network range.