DNS lookup
DNS lookup за any domain: see its IP addresses, mail servers, Название servers, TXT и other records.
от Queries go до Cloudflare’s public DNS over HTTPS service when you press the button.
О «DNS lookup»
DNS lookup за any domain: see its IP addresses, mail servers, Название servers, TXT и other records.
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Как пользоваться: DNS lookup
Что считает и когда использовать
Looks up the DNS records a domain name: its IPv4 и IPv6 addresses (A и AAAA), mail servers (MX), Название servers (NS), text records (TXT), aliases (CNAME), Зона Подробности (SOA) и от certificate rules (CAA). Use it до check that a domain points where you expect, от or до debug email и website set-up.
Как пользоваться, шаг за шагом
- Type a domain Название such as Пример.com.
- Choose a record type, или Оставить “All common records”.
- Press “Look up DNS”.
- Read За шт. record card. TTL — how many Секунды the answer may be cached.
Что означает каждое поле
- Domain Название – от The domain до от look up. Web addresses are cleaned до the domain, so https://example.com/page also works.
- Record type – One record type, или all the common ones.
Как читать результаты
- A и AAAA – The IPv4 и IPv6 addresses the Название Точки По.
- MX – Mail servers, with a priority Число. Lower Числа are tried first.
- NS, TXT, CNAME, SOA, CAA – Название servers, text records such as SPF, aliases, Зона authority и which certificate authorities may issue certificates.
Формула
Нет calculation. The browser asks Cloudflare’s public DNS over HTTPS service за each record type и shows the answers it gets. TTL — the time в seconds that resolvers may cache an answer.
Пример расчёта
A lookup example.com returns an A record with an IPv4 address, MX records за mail, и TXT records including its SPF policy.
Допущения и ограничения
- Answers come from a public resolver и may be cached за от up до the TTL, so a change made a few minutes ago may not show yet.
- The lookup — made when you press the button.
- Only the common record types are offered.
Частые ошибки
- Typing a full web address with a pa-й и expecting records за the page. DNS works on domain names only.
- от Expecting a Изменение до Показать immediately. Caches hold old answers До the TTL runs out.
- Looking up a subdomain you have not created, which returns Нет records.
Частые вопросы
What — a DNS record?
An entry that tells the internet something about a domain, such as which server hosts its website или handles its email.
What does TTL Среднее?
от Время до live, в seconds. It — how long other servers may reuse an answer before asking again.
Why are there several MX records?
They give backup mail servers. The one with the lowest priority Число — tried first.
What does NXDOMAIN Среднее?
The domain does not exist, so check the spelling.
Банка I look up an MX record only?
Да. Choose MX в the record type list.