dnspropagation#

dnspropagation is a command-line tool that checks DNS record “propagation” across multiple resolvers simultaneously. Run a single command and see what different nameservers around the world return for any record type.

Installation#

pipx install dnspropagation

Or run directly with Docker — no installation required:

docker run berkas1/dnspropagation A google.com

Quick Start#

# Check A records for google.com across all default servers
dnspropagation A google.com
docker run berkas1/dnspropagation A google.com

# Check TXT records and show TTL values
dnspropagation --ttl TXT example.com

# Output as JSON for scripting
dnspropagation --json A example.com

By default, the tool queries six public resolvers (Google, Cloudflare, Quad9, NIC.CZ, Deutsche Telekom) and prints a colour-coded table showing each server’s answer.

Default Servers#

Output Formats#

dnspropagation supports four output formats:

• Table (default) — colour-coded terminal table
• JSON (--json) — machine-readable JSON array
• YAML (--yaml) — machine-readable YAML
• HTML (--html) — self-contained HTML page written to stdout

See Features for a full description of all options and Use in Pipelines for CI/CD integration patterns.