DNS रिकॉर्ड समझाया गया: एक संपूर्ण शुरुआती गाइड
DNS रिकॉर्ड समझाया गया: एक संपूर्ण शुरुआती गाइड ऑनलाइन मुफ़्त. डेटा को आपके ब्राउज़र में तुरंत प्रोसेस करता है। अपलोड नहीं, पंजीकरण नहीं, पूरी तरह से निजी।
Network request requiredDNS Records Explained — A Complete Beginner's Guide
DNS (Domain Name System) is the phonebook of the Internet. When you type a domain, DNS records tell browsers and mail servers where to find it. Below are the 10 most common record types you'll encounter.
A Address (IPv4)
Maps a hostname to an IPv4 address. The most fundamental record — it tells resolvers where your domain lives on the IPv4 Internet.
Fields: Name: host (e.g. @, www) · TTL: cache time in seconds · Value: IPv4 address (e.g. 192.0.2.1)
example.com. 3600 IN A 192.0.2.1
AAAA Address (IPv6)
Maps a hostname to an IPv6 address. The IPv6 equivalent of an A record — needed for reachability on modern networks.
Fields: Name: host · TTL: seconds · Value: IPv6 address (e.g. 2001:db8::1)
example.com. 3600 IN AAAA 2001:db8::1
CNAME Canonical Name
Aliases one hostname to another. Commonly used to point www to the apex domain or to a third-party service (e.g. CDN).
Fields: Name: alias host · TTL: seconds · Value: target hostname
www.example.com. 3600 IN CNAME example.com.
MX Mail Exchange
Directs email to the mail server responsible for a domain. Includes a preference value for ordering multiple servers.
Fields: Name: domain · TTL: seconds · Preference: lower = higher priority · Value: mail server hostname
example.com. 3600 IN MX 10 mail.example.com.
TXT Text
Arbitrary text up to 255 chars per string. Used for SPF, DKIM, DMARC, domain verification, and other metadata.
Fields: Name: host · TTL: seconds · Value: text string(s)
example.com. 3600 IN TXT "v=spf1 include:_spf.google.com -all"
NS Name Server
Delegates a zone to authoritative name servers. Listed at the registrar and at the parent zone.
Fields: Name: zone · TTL: seconds · Value: nameserver hostname
example.com. 86400 IN NS ns1.example.com.
SOA Start of Authority
Defines the zone's authoritative metadata: primary nameserver, admin email, serial, refresh, retry, expire, and minimum TTL.
Fields: MNAME: primary nameserver · RNAME: admin email (dot-separated) · Serial, Refresh, Retry, Expire, Minimum
example.com. 3600 IN SOA ns1.example.com. admin.example.com. 2026010101 7200 3600 1209600 3600
PTR Pointer (reverse DNS)
Maps an IP address back to a hostname — the reverse of A/AAAA. Used in reverse DNS lookups (in-addr.arpa / ip6.arpa).
Fields: Name: reversed IP .in-addr.arpa · TTL: seconds · Value: hostname
1.2.0.192.in-addr.arpa. 3600 IN PTR example.com.
CAA Certification Authority Authorization
Restricts which CAs are allowed to issue certificates for the domain. A security best practice to prevent mis-issuance.
Fields: Name: host · TTL: seconds · Flags: 0 (issue) / 128 (issuewild) · Tag: "issue" / "issuewild" / "iodef" · Value: CA domain
example.com. 3600 IN CAA 0 issue "letsencrypt.org"
SRV Service
Defines the location (host + port) of a service. Used by XMPP, SIP, Active Directory, and other service-discovery protocols.
Fields: Name: _service._protocol.domain · TTL: seconds · Priority, Weight, Port, Target
_sip._tcp.example.com. 3600 IN SRV 10 60 5060 sip.example.com.
Live DNS lookup
Queries happen directly from your browser via DNS-over-HTTPS (Cloudflare 1.1.1.1). No server-side proxy is involved.
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FAQ
क्या DNS रिकॉर्ड समझाया गया: एक संपूर्ण शुरुआती गाइड मुफ़्त है?
हाँ, पूरी तरह से मुफ़्त। पंजीकरण की आवश्यकता नहीं।
क्या यह टूल मेरा डेटा अपलोड करता है?
नहीं। सभी प्रोसेसिंग आपके ब्राउज़र में स्थानीय रूप से होता है। आपका डेटा कभी आपके डिवाइस से नहीं निकलता।