DNS propagation checker. Queries a domain across multiple global resolvers in parallel and diffs the results — shows exactly where propagation stands during a DNS migration.

Status

Planned. Not yet started.

Stack

Go — single static binary, no runtime dependencies
Embedded resolver list (Cloudflare, Google, OpenDNS, Quad9, authoritative NS)

Usage

arcline-dns example.com
arcline-dns example.com --type MX
arcline-dns example.com --type A --watch 30
arcline-dns example.com --resolvers 8.8.8.8,1.1.1.1
arcline-dns example.com --json

Features

Parallel queries across all resolvers
Supports A, AAAA, CNAME, MX, TXT, NS, SOA
Diff mode: highlights resolvers that disagree with the majority
TTL per resolver
--watch mode: re-queries on an interval, shows changes live
Color-coded output: green = agrees, red = differs, yellow = no response

See todo.md for the full task list and output format spec.

License

MIT — see LICENSE.