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 - Ho sheba mahala DNS (A, AAAA, MX, TXT, NS Records)

E lokisetsa cheke...

Se boleloang ke mofuta o mong le o mong oa rekoto ea DNS

Domain Name System e boloka ho feta aterese ea domain. Sehlahlobi sena se botsa DNS ka kotloloho ka DNS-over-HTTPS e patiloeng, 'me se tlaleha mofuta o mong le o mong oa rekoto eo domain name e e phatlalatsang:

A / AAAA — IPv4 / IPv6 e sebetsana le sebaka sa marang-rang se supang ho. Ntle le bonyane e 'ngoe ea tsena, domain name e ke ke ea amohela sebaka sa marang-rang.
CNAME - lebitso le leng le supang lebitso le leng ho le leng. Ha e lumelloe sebakeng se phahameng sa libaka, ho joalo example.com hangata e ke ke ea bontša letho.
MX — li-server tsa mangolo tse amohelang lengolo-tsoibila bakeng sa domain, e 'ngoe le e 'ngoe e na le eona e tlang pele. Ha ho MX hangata ho bolela hore ha ho na lengolo-tsoibila.
NS — li-server tsa mabitso tse nang le taolo tse arabang sebaka.
TXT - Sengoloa sa mofuta oa mahala: maano a khahlano le spoofing a SPF, ho saena DKIM (libakeng tse tlase), li-tokens tsa netefatso ea beng ba domain.
CAA - ke ba boholong ba setifikeiti ba lumelletsoeng ho fana ka setifikeiti sa TLS bakeng sa sebaka seo.
SOA - metadata ea tsamaiso ea zone: lebitso la mantlha, mabitso le nako ea ho boloka nako.

Hobaneng u sheba lirekoto tsa DNS?

Ka mor'a ho falla kapa ho fetola DNS - netefatsa hore lirekoto tse ncha li fumaneha ho litharollo tsa sechaba, eseng feela polokelong ea komporo ea hau.
Tlhahiso ea lengolo-tsoibila - netefatsa hore SPF/MX likenyo li nepahetse pele melaetsa e qala ho tlokoma.
Litlhahlobo tsa ts'ireletso - sheba liphetoho tse sa lebelloang tsa TXT/NS, 'me u netefatse hore CAA e thathamisa feela li-CA tseo u li sebelisang.

Keletso: Liphetoho tsa DNS ha li hlahe hang-hang hohle - TTL ea rekoto e 'ngoe le e 'ngoe e bolella ba rarollang hore na ba tla boloka karabo ea khale nako e kae. Theola TTL pele ho phetoho e reriloeng, ebe u e phahamisa hape ka mor'a moo.

U fumane liaterese? Bona Domain ho IP bakeng sa boemo bo felletseng ba aterese, tsamaisa a hlahlobisisa lenane la batho ba batsho holim'a eona, kapa u bale ea eona fetola DNS.

FAQ

Lipotso tsa ho hlahloba DNS

Sehlahlobi sa DNS ke eng?

Sehlahlobi sa DNS se botsa Domain Name System bakeng sa mofuta o mong le o mong oa rekoto ea domain - liaterese tseo e li supang (A, AAAA), li-server tsa eona tsa poso (MX), li-server tsa mabitso (NS), likhoele tsa netefatso (TXT) le maano a ts'ireletso (CAA) - mme e tlaleha hantle se phatlalalitsoeng.

Hobaneng ke sa bone rekoto ea CNAME bakeng sa motso oa sebaka sa ka?

DNS ha e lumelle CNAME sebakeng se phahameng sa zone (example.com ka boeona) - motso o tlameha ho sebelisa lirekoto tsa A/AAAA. Lirekoto tsa CNAME li hlaha feela ho li-subdomains joalo ka www.mohlala.com.

Liphetoho tsa DNS li nka nako e kae ho hlaha?

Rekoto e 'ngoe le e' ngoe e na le TTL (nako ea ho phela) e bolellang bahanyetsi hore na ba e boloke nako e kae - ho tloha metsotsoana ho isa matsatsing. Ka mor'a ho hlophisa rekoto, bahanyetsi ba sechaba ba lula ba fana ka karabo ea khale ho fihlela TTL ea eona e felloa ke nako, kahoo phatlalatso e ka nka nako e telele joalo ka TTL e fetileng.