cdnlook DNS Diagnostic Workspace
DNS Lookup

Resolver Comparison

Verify DNS responses and IP ownership by domain.

IPv4, IPv6, CNAME, TXT
Default System Resolver
Google 8.8.8.8
Cloudflare 1.1.1.1
KT Domestic ISP
SKB Domestic ISP
LGU+ Domestic ISP
Quick Examples
CSV Processing

CSV Extension

Adds host, ip, and is_gcp columns to URL CSV.

Specify URL Column

CSV Upload

URL column is required. Default is URL, but you can specify another name.

Supported Records

A, AAAA, CNAME, TXT

Resolvers

Default, Google, Cloudflare, KT, SKB, LGU+

CSV Output

host, ip, is_gcp