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Which DNS, SSL and email checker should you use?
Descriptions below come from each site's own page, read on 3 October 2026. We have not benchmarked accuracy or speed, so this table makes no such claims. Sites change, so check the source link. The Network Tools is independent and not affiliated with or endorsed by any site named here; all names belong to their owners.
| Tool | What its page says it does | Our suggestion |
|---|---|---|
| intoDNS | DNS and mail-server health report with fix suggestions and links to protocol documentation. | Use for a one-shot zone health review. |
| Qualys SSL Labs | Deep analysis of the configuration of a public SSL web server. States that submitted names and results are not used. | Use for a full TLS configuration test. |
| who.is | WHOIS and RDAP lookup, DNS records, nameserver lookup, IP lookup and domain history. | Use for registration and ownership data. |
| DNSChecker | Record lookup (A, AAAA, CNAME, MX, NS, PTR, SRV, SOA, TXT, CAA, DS, DNSKEY) checked against a list of public resolvers in many countries. | Use to see resolver answers from many locations. |
| MxToolbox | MX lookup and related email and DNS diagnostics. | Use for MX and blacklist style checks. |
Where The Network Tools fits
- Each result comes with how to read it, exact fix steps and common mistakes, with links to the provider's own documentation. See DMARC, MX and DNS.
- Honest limits: 6 resolvers for propagation and 7 blocklists. Use DNSChecker if you need many more locations, and SSL Labs if you need a full TLS grade.
- How each check runs is explained on About and how we check.
FAQ
Is The Network Tools a replacement for these sites?
No. They are established tools and some do things we do not, such as a full TLS grade or checks from many more locations. We focus on explaining each result and giving the exact fix.
How many resolvers and blocklists do you check?
Propagation compares 6 public resolvers and the blacklist check queries 7 DNS blocklists. We do not claim more than that.