Articles & Guides
Useful resources for web developers and system administrators
Found 44 · DNS · Reset
DNS
Best Public DNS Servers 2026: Fastest, Safest, IPv4 & IPv6
Best public DNS servers compared: Cloudflare 1.1.1.1, Google 8.8.8.8, Quad9, OpenDNS, AdGuard — IPv4/IPv6 and DoH addresses, privacy, and how to test speed.
DNS
How to Check a Domain's MX Record
How to check a domain's MX record: a DNS check or dig, what the priorities and an empty answer mean, common mail problems and the link to SPF/DKIM/DMARC.
DNS
How to Connect a Domain to Hosting: Step by Step
Two ways to connect a domain to hosting: change the NS servers or add an A record. Step by step, how long DNS takes to update, and how to confirm it worked.
DNS
Fix DNS_PROBE_FINISHED_NO_INTERNET: Causes and Solutions
DNS_PROBE_FINISHED_NO_INTERNET means Chrome cannot reach a DNS resolver. Causes and step-by-step fixes: flush DNS, reset Winsock, change DNS servers.
DNS
SOA DNS Record: Fields, Serial, and How to Read It
Understand the SOA DNS record: all fields (MNAME, RNAME, serial, refresh, retry, expire, minimum), the YYYYMMDDnn serial format, zone transfers, and dig checks.
DNS
SRV DNS Record: Syntax, Priority, Examples
What an SRV DNS record is per RFC 2782: the _service._proto.name syntax, how priority and weight work, examples for SIP and XMPP, and common mistakes.
DNS
TXT DNS Record: What It's For and How to Add It
What a TXT DNS record is and why you need it (verification, SPF, DKIM, DMARC, BIMI), the 255-character limit, quoting syntax, and how to add and verify it.
DNS
NS DNS Record: What It Is and How to Check It
What an NS DNS record is and how zone delegation works: primary and secondary servers, glue records, checking NS with dig and WHOIS, changing NS servers and common mistakes.
DNS
CAA DNS Record: Control Which CAs Issue Your SSL
What a CAA DNS record is, why it matters, the issue/issuewild/iodef syntax, and how to check it. Stop unauthorized SSL certificate issuance for your domain.
DNS
SPF Too Many DNS Lookups (10-Lookup Limit) Fix
SPF too many DNS lookups error: what the 10-lookup limit means and how to fix it. Counting include, mx, a, SPF flattening, macros and checking with dig.