AnyTools
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Domain Lookup

Query domain name DNS records, resolve to IP addresses, test connectivity with ping, and display geolocation information

Input
HTTPS
Approximate Location
Map will appear here after domain lookup

❓O que é pesquisa de domínio

A ferramenta de pesquisa de domínio consulta registros DNS para resolver nomes de domínio em endereços IP, testa a conectividade do servidor com ping e exibe informações de geolocalização. Adequada para solução de problemas de rede, análise DNS, monitoramento de servidores e gerenciamento de domínios.

✨Features

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DNS Resolution

Resolve domain names to IP addresses using DNS over HTTPS (DoH), supporting multiple DNS providers with automatic failover for high availability
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Ping Testing

Test domain connectivity using HTTP HEAD requests, measure response time, and check HTTP/HTTPS status codes to verify server availability
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Geolocation Display

Automatically query geolocation information for resolved IP addresses, displaying country, region, city, coordinates, and network information on an interactive map
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Multiple IP Support

Display all IP addresses resolved from domain name A records, supporting domains with multiple IP addresses for load balancing or CDN configurations

📋Usage Guide

1️⃣
Enter Domain Name
Enter the domain name you want to query in the input box (e.g., example.com). The tool will automatically remove protocol prefixes (http://, https://) and www prefixes.
2️⃣
Execute DNS Lookup
Click the 'Lookup' button or press Enter to query DNS records. The system will resolve the domain name to IP addresses using DNS over HTTPS (DoH) and display the results.
3️⃣
Test Connectivity
Click the 'Ping' button to test domain connectivity using HTTP HEAD requests. Select HTTP or HTTPS protocol, and view response time and status code.
4️⃣
View Results
View DNS resolution results (IP addresses), geolocation information (country, region, city, coordinates), network information (ISP, ASN), and map visualization.

📚Technical Introduction

🔬DNS over HTTPS (DoH)

DNS over HTTPS is a protocol that encrypts DNS queries using HTTPS, improving privacy and security. This tool uses Google DNS and Cloudflare DNS DoH services to resolve domain names. DoH queries are sent over HTTPS connections, preventing DNS query interception and tampering. The tool implements automatic failover: if Google DNS fails, it automatically switches to Cloudflare DNS to ensure query success rate.

⚙️HTTP Ping Implementation

Since Cloudflare Workers does not support ICMP ping, this tool uses HTTP HEAD requests to simulate ping functionality. HEAD requests only retrieve response headers without downloading content, making them faster than GET requests. The tool measures the time from sending the request to receiving the response header, calculating response time. It supports both HTTP and HTTPS protocols, allowing users to test different service endpoints.

🌐Domain Name Format Validation

Domain name validation follows RFC 1123 standards: domain names consist of labels separated by dots, each label can contain letters, numbers, and hyphens, must start and end with alphanumeric characters, maximum length 63 characters per label, total domain name length maximum 253 characters. The tool automatically removes protocol prefixes (http://, https://) and www prefixes before validation, ensuring accurate domain name parsing.

📍IP Geolocation Integration

After resolving domain names to IP addresses, the tool automatically queries geolocation information for the first IP address using the existing IP lookup API. This integration provides complete domain analysis: DNS resolution, IP address display, and geolocation visualization. The geolocation data includes country, region, city, coordinates, ISP, ASN, and other network information, displayed on an interactive map for intuitive visualization.
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Frequently Asked Questions

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Por que ping usa HTTP HEAD em vez de ICMP?

Cloudflare Workers (onde esta ferramenta é executada) não suporta o protocolo ICMP ping. Solicitações HTTP HEAD são usadas como alternativa: elas testam a conectividade do servidor, medem o tempo de resposta e verificam códigos de status HTTP. Embora não seja idêntico ao ICMP ping, HTTP ping fornece funcionalidade similar para ferramentas baseadas na web e funciona melhor em ambientes de navegador.
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Qual é a diferença entre pesquisa DNS e ping?

A pesquisa DNS resolve nomes de domínio em endereços IP consultando servidores DNS. Ping testa a conectividade do servidor enviando solicitações HTTP e medindo o tempo de resposta. A pesquisa DNS informa para onde o domínio aponta (endereços IP), enquanto ping informa se o servidor está acessível e com que rapidez responde. Ambos são úteis para solução de problemas de rede.
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Por que um domínio pode ter múltiplos endereços IP?

Os domínios podem ter múltiplos endereços IP por várias razões: 1) Balanceamento de carga - distribuição de tráfego entre múltiplos servidores；2) Redundância - servidores de backup para alta disponibilidade；3) CDN - redes de entrega de conteúdo usam múltiplos IPs em diferentes localizações；4) DNS Round-robin - rotação entre múltiplos servidores. A ferramenta exibe todos os endereços IP resolvidos.
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Quão precisa é a informação de geolocalização?

A precisão da geolocalização depende da alocação e do roteamento de endereços IP. Tipicamente precisa ao nível da cidade ou região, não endereços físicos precisos. Para CDN e serviços em nuvem, a geolocalização pode mostrar localizações de data centers em vez de localizações reais do servidor. Redes móveis e VPNs podem mostrar localizações de ISP em vez de localizações de usuários. A localização é aproximada e baseada em intervalos de endereços IP.

💡How to Use

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Understanding DNS Resolution

DNS resolution converts human-readable domain names (like example.com) into IP addresses (like 93.184.216.34). When you enter a domain name, the tool queries DNS servers to find the corresponding A records, which contain IP addresses. Domains can have multiple IP addresses for load balancing or redundancy.
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Understanding Ping Testing

Ping testing checks if a server is reachable and measures response time. This tool uses HTTP HEAD requests instead of ICMP ping, which works better in web environments. Response time indicates server performance: lower is better. Status codes indicate server health: 200 means OK, 4xx/5xx indicate errors.
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Understanding Geolocation

Geolocation shows the approximate physical location of the server hosting the domain. This is based on the IP address location, not the domain owner's location. CDN and cloud services may show data center locations rather than actual server locations.
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Troubleshooting Tips

If DNS resolution fails, check: 1) Domain name spelling is correct; 2) Domain exists and has A records; 3) DNS servers are accessible. If ping fails, check: 1) Server is running; 2) Firewall allows HTTP/HTTPS; 3) Domain points to correct server. If geolocation is missing, the IP address may be private or the geolocation database may not have data.

🔗Related Documents

📘RFC 1035 - Domain Names-Official DNS protocol specification, defining domain name structure, DNS query format, and record types
📘RFC 8484 - DNS over HTTPS-DNS over HTTPS (DoH) protocol specification, defining how to send DNS queries over HTTPS
🌐Google DNS Documentation-Google Public DNS service documentation, including DNS over HTTPS API usage
🔍Cloudflare DNS Documentation-Cloudflare DNS over HTTPS service documentation and API reference
📖MDN - DNS-Mozilla Developer Network DNS documentation, explaining DNS concepts and working principles

📝Update Log

📌v1.0.0
v1.0.0Initial version released, supporting DNS resolution using DNS over HTTPS, HTTP ping testing, and IP geolocation display(2025-12-13)

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