Network & Security Tools | SEO, IP, DNS and Site Checks

China Unicom DNS Address Directory

Read web-collected China Unicom DNS-related IPv4 records, ranges and location labels. Original source, collection date, public access and availability are unverified.

TTFB Test Tool

Measure your server's Time to First Byte (TTFB) to help developers optimize website performance and SEO rankings.

Top-Level Domain (TLD) Directory

Search 900+ top-level domain suffixes worldwide in one place, including type, managing organization, and registration restrictions.

Browser and Device Information Checker

Inspect the browser, operating system, display, locale, timezone, and hardware hints available to the current web page.

Ping Test

Ping test tool to check network connectivity, latency, and packet loss for quick network troubleshooting.

Multiple Search Engine Tool

Enter one query and create direct links for Google, Bing, DuckDuckGo, GitHub, Wikipedia, YouTube, and other search services.

China Railcom DNS Address Directory

Read web-collected China Railcom DNS-related IPv4 records, ranges and location labels. Original source, collection date, public access and availability are unverified.

Baiduspider Pattern Reference Checker

Match User-Agent text and IPv4 input against the tool’s embedded Baiduspider patterns and reference ranges.

Domain Checker

Check domain DNS records and HTTP status codes online to quickly diagnose website connectivity and network issues.

HSTS Checker

Check your website's HSTS configuration status, analyze security header parameters, and enhance HTTPS strict transport security.

Website URL Search-Page Launcher

Open predefined external search or submission pages with a website URL.

Bulk IP Geolocation Lookup

Bulk lookup IP address locations and network details with city-level accuracy.

My IP Address Checker

See the IP address this device presents to ToolKK, including its version, address scope, and browser network status.

Short URL Generator

Convert long URLs into long-term valid short links with customizable short code length, perfect for sharing, bookmarking, and distribution.

Street-Level IP Address Geolocation Tool

Accurately look up the street-level location and ISP details of an IP address. Supports both IPv4 and IPv6 parsing.

SSL Certificate Checker

Free online SSL certificate checker. Verify website SSL validity, view issuer details, and check expiration dates instantly.

Bing URL Submission Tool

Free online Bing URL submission tool. Quickly submit your website links to the Bing search engine to speed up crawling and improve indexing efficiency.

Web Keyword Density Checker

Check the frequency and density of keywords on a web page to support SEO optimization and improve search rankings.

Reverse IP Lookup

Free reverse IP lookup tool to find all domains hosted on a single IP address. Check DNS resolution history for IPv4 and IPv6 addresses instantly.

Website Meta Tags Checker

Extract website title, description, and keywords metadata to analyze basic SEO configurations.

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