lookup> MAILB

MAILB ·Record

mailbox-related RRs (MB, MG or MR)

value 253activeRFC 1035

Quick facts

TypeMAILB

Value253

Statusactive

Meaningmailbox-related RRs (MB, MG or MR)

SpecificationRFC 1035

Purpose

What does a MAILB record do?

mailbox-related RRs (MB, MG or MR)

MAILB is one of the DNS resource record (RR) types defined by RFC 1035.

Related record types

Frequently asked questions

Used for DNS resolution and zone configuration.

In the DNS management panel of your registrar or DNS provider (for example Cloudflare or Route53).

Sources & standards

Updated 2026-08-18

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