Which DNS Record Types Can I Check on whois.b1s4.xyz?

Updated

whois.b1s4.xyz supports more than 30 DNS record types, including A, AAAA, MX, NS, TXT, CNAME, SOA, and CAA. You can query any of these alongside RDAP domain lookup from the same page. The right record type depends on what you are trying to verify: an IP address, mail routing, name servers, ownership verification, or certificate authorization.

Common record types and what each one tells you

Record type What it answers Typical use
A Which IPv4 address does this hostname point to? Checking where a website or subdomain resolves
AAAA Which IPv6 address does this hostname point to? Verifying IPv6 readiness
MX Which servers handle email for this domain? Diagnosing mail delivery or misrouted email
NS Which name servers are authoritative for this zone? Confirming DNS delegation
TXT What arbitrary text is published for this domain? SPF, DKIM, DMARC, and domain ownership verification
CNAME What other hostname is this name an alias for? Tracing aliases and CDN or hosting setups
SOA What are the zone's primary name server and timing values? Checking zone authority and refresh/retry settings
CAA Which certificate authorities may issue certificates for this domain? Auditing TLS issuance policy

Each record type answers a different question about a domain's configuration, so a single lookup rarely tells the whole story. For example, confirming that email is set up correctly usually means checking MX and TXT together, not just one.

The full set of supported types

The tool queries A, AAAA, MX, NS, TXT, CNAME, SOA, CAA "and 30+ more record types." That means the common eight above are a starting point, not the limit. If you are troubleshooting something less typical — service discovery, DNSSEC-related records, or other specialized entries — it is worth trying the type directly rather than assuming it is unsupported.

How to choose the right type for your task

Pick the record type based on the question you need answered:

  • Verifying where a domain points: start with A and AAAA.
  • Checking email configuration: use MX, then TXT for SPF/DKIM/DMARC.
  • Confirming DNS delegation: use NS, and SOA for zone authority details.
  • Tracing an alias or CDN: use CNAME.
  • Auditing certificate issuance: use CAA.
  • Proving domain ownership for a third-party service: use TXT.

If your task spans several of these, run multiple queries rather than expecting one record type to cover everything.

DNS records vs. RDAP on the same page

The site pairs DNS record lookup with RDAP domain lookup. DNS records describe how a domain is configured technically — addresses, mail servers, name servers, and similar entries. RDAP returns registration data about the domain itself. They answer different questions, so use DNS records for configuration checks and RDAP when you need registration-side information. Both are available from the same interface, which saves switching between tools.