Check SOA DNS records for any domain and inspect serial, refresh, retry, expire, and minimum TTL values quickly. Designed specifically for developers and professionals, this free online networking runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking, no registration required, and an entirely ad-free experience.
What SOA records do
SOA defines the authoritative DNS zone metadata including serial number and refresh timings.
Serial number checks
Serial values help confirm whether DNS zone updates propagated after a change.
Operational use
Review refresh/retry/expire values during migration, failover, and DNS outage investigations.
Resolver source
Results come from Google Public DNS-over-HTTPS in one SOA query with parsed output fields.
Check SOA DNS records for any domain and inspect zone metadata like serial, refresh, retry, expire, and minimum TTL values.
Only the domain you enter is sent to Google Public DNS for one SOA query. No private files or credentials are uploaded.
DevToolLab is 100% free & ad-free. If this networking saved you some time today, please consider supporting our work.
Check HTTP status codes, response headers and redirect chains for any URL.
Generate a unique URL to easily test, receive and inspect HTTP webhooks in real-time. View request headers, query parameters, JSON payloads, and more.
Calculate IPv4 subnets, network masks, broadcast addresses, and host ranges from IP and CIDR.