DNS Propagation vs Request12

Changed a DNS record? DNS Propagation shows in seconds whether public DNS resolvers already return the new value. Enter a domain, pick a record type and compare the answers of eight resolvers side by side, with response times, TTLs and how fresh each cached answer is. Built for webmasters, developers and IT admins moving a website, switching mail providers or changing nameservers. Propagation check: - Queries AdGuard, AliDNS, Cloudflare, DNS.SB, DNSPod, Google, NextDNS and RethinkDNS at the same time over DNS-over-HTTPS - One clear status: all resolvers agree, mismatch, or error - Record types: A, AAAA, CNAME, MX, TXT, NS, SOA and SRV - Response time and TTL for every resolver, fastest first TTL analysis: - Queries the domain's own nameservers directly for the original TTL - Shows how long each resolver has cached the answer and how fresh it still is, color-coded - See at a glance when an old record will expire everywhere History and gestures: - Your last 50 lookups, grouped by day with their status - Tap to expand a lookup, long press for all details - Swipe right to check a domain again, swipe left to delete it - Double-tap results to copy them, including the TTL analysis Settings: - Turn individual resolvers on or off - Request timeout from 1 to 30 seconds - TTL analysis on or off - Light, Dark and System appearance - Works on iPhone and iPad, with a sidebar on iPad

Request12 is a focused API debugging tool built for iOS developers, QA engineers, and technical teams that need fast visibility into web traffic. Use the built-in browser to load a page, capture network calls, inspect details, and replay requests with edits in a sandbox environment. What you can do - Browse any target URL in an embedded webview. - Automatically capture `fetch` and `XMLHttpRequest` traffic from pages loaded in the app. - View method, status, timestamp, full URL, headers, request body, and response body. - Filter traffic by method and search by URL/status/error. - Inspect JSON with pretty print and syntax highlighting. - Copy URL, request body, response body, and payload sections in one tap. - Send captured requests directly to Sandbox. - Edit method, URL, headers, and body before execution. - Execute with cookie sync support from the browser context. - Review response status, latency, headers, and body for fast validation. - Switch between Light, Dark, and System themes. Request12 is designed for fast iteration: - Reproduce issues from real traffic. - Validate backend changes quickly. - Compare original vs modified requests. - Test custom headers and payload variations on mobile. Notes Request12 captures traffic generated inside the app browser context and sandbox workflow. It is intended for authorized testing and debugging use cases.