What is a DNS checker?

A DNS checker queries the Domain Name System for every record type of a domain — the addresses it points to (A, AAAA), its mail servers (MX), name servers (NS), verification strings (TXT) and security policies (CAA) — and reports exactly what is published.

Why can't I see a CNAME record for my domain's root?

DNS does not allow a CNAME on the zone apex (example.com itself) — the root must use A/AAAA records. CNAME records only appear on subdomains like www.example.com.

How long do DNS changes take to show up?

Each record carries a TTL (time to live) that tells resolvers how long to cache it — from seconds to days. After editing a record, public resolvers keep serving the old answer until its TTL expires, so propagation can take as long as the previous TTL.

DNS Checker - Yemahara DNS Tarisa (A, AAAA, MX, TXT, NS Records)

Kugadzirira cheki…

Zvinorehwa neimwe DNS rekodhi mhando

Iyo Domain Name System inochengetedza zvakawanda kupfuura kero yedomasi. Iyi yekutarisa inobvunza live DNS pamusoro yakavharidzirwa DNS-pamusoro-HTTPS uye inoshuma rekodhi rekodhi rekodhi inodhindwa:

A / AAAA - iyo IPv4 / IPv6 inogadzirisa iyo domain inonongedza. Pasina imwe yeiyi, domain haigone kugamuchira webhusaiti.
CNAME - aas anonongedzera zita pane rimwe. Hazvibvumirwi pane zone apex, saka example.com kazhinji hairatidze.
MX - maseva etsamba anogashira email kune iyo domain, imwe neimwe ine yekutanga. Kwete MX kazhinji zvinoreva kuti hapana email.
NS - maseva ane chiremera ezita anopindura nzvimbo.
TXT - yemahara-fomu mameseji: SPF anti-spoofing marongero, DKIM kusaina (pane subdomain), domain-muridzi verification tokens.
CAA - ndezvipi zviremera zvezvitupa zvinotenderwa kuburitsa zvitupa zveTLS zvedomasi.
SOA - iyo zone's administrative metadata: yekutanga nameserver, kuonana uye caching nguva.

Sei uchitarisa DNS zvinyorwa?

Mushure mekufamba kana DNS edit - simbisa kuti zvinyorwa zvitsva zvinogara pane zvinogadziriswa neveruzhinji, kwete pacache yekombuta yako chete.
Email deliveryability - simbisa SPF / MX zvinyorwa ndezvechokwadi mameseji asati atanga kubhuroka.
Security wongororo - tarisa zvisingatarisirwi TXT/NS shanduko, uye ita shuwa kuti CAA inonyora chete maCA aunoshandisa.

Zano: DNS edits hazviratidzike ipapo pese pese - rekodhi yega yega TTL inoudza vanogadzirisa kuti inguvai yekuchengeta mhinduro yekare. Dzikisa TTL pamberi peshanduko yakarongwa, wozoisimudza zvakare mushure.

Wawana kero? Maona Domain kune IP kune iyo yakazara yekugamuchira mbiri yekero, mhanya a blacklist check pairi, kana kuverenga zvayo shandura DNS.

FAQ

DNS cheki mibvunzo

Chii chinonzi DNS cheki?

DNS cheki inobvunza iyo Domain Name System kune yega rekodhi rekodhi rekodhi - kero yainongedza kune (A, AAAA), yayo mail maseva (MX), mazita maseva (NS), tambo dzekusimbisa (TXT) uye mitemo yekuchengetedza (CAA) - uye inoshuma chaizvo zvakaburitswa.

Sei ndisingaone rekodhi yeCNAME yemudzi wedomeini yangu?

DNS haitenderi CNAME pane zone apex (example.com pachayo) - mudzi unofanirwa kushandisa marekodhi eA/AAAA. CNAME marekodhi anongoonekwa pane subdomain senge www.muenzaniso.com.

Shanduko dzeDNS dzinotora nguva yakareba sei kuti dziratidze?

Rekodhi yega yega inotakura TTL (nguva yekurarama) inoudza vanogadzirisa kuti inguva yakadii kuichengeta - kubva pamasekonzi kusvika kumazuva. Mushure mekugadzirisa rekodhi, vagadzirisi veveruzhinji vanoramba vachipa mhinduro yekare kusvika TTL yayo yapera, saka kuparadzira kunogona kutora nguva yakareba seTTL yapfuura.