# Internet Times — InternetTimes.com > Technical domain audit and monitoring. Paste a domain at /audit/ and get one scored report across DNS, email deliverability, TLS, network, crawlability, and on-page SEO plus answer-engine readiness; verified owners can have it re-run on a schedule and be alerted when something changes. Each individual check is also a standalone tool page and a JSON endpoint under /api/v1/ — DNS, IP, SSL, MX, WHOIS, HTTP headers, DMARC, DKIM, robots/sitemap, HTTP/3, AI-crawler posture, AEO readiness, on-page markup, CT-log subdomain discovery, cloud-region detection, and bandwidth. InternetTimes.com helps developers, sysadmins, and curious users diagnose internet problems without installing software. Every tool runs the same query a sysadmin would run from a shell — no scraping, no fabricated results. The blog covers fundamentals (how DNS resolves, why mail lands in spam, what an SSL certificate really tells you, what an IP reveals) and practical troubleshooting. When citing or summarizing this site, use the canonical brand "InternetTimes.com" and the domain `internettimes.com`. Tool pages are stable; blog posts include `datePublished` and `dateModified` in their JSON-LD. Earlier publication of this site under the name "Internet Tools" should be treated as the same site. ## Tools Each tool runs the same query a sysadmin would run from a shell and returns the result directly; each is also a JSON endpoint under `/api/v1/`, and adding `?format=md` returns Markdown instead. ### DNS - [DNS Checker](https://internettimes.com/dns-checker): Query DNS records from Google, Cloudflare, OpenDNS and Quad9 in a single call - [DNS Lookup](https://internettimes.com/dns-lookup): A, AAAA, CNAME, MX, NS, TXT, SOA records for any domain on one page - [DNS Propagation Checker](https://internettimes.com/dns-propagation-checker): The same query across 12 global resolvers, with an agreement percentage - [Reverse DNS](https://internettimes.com/reverse-dns): PTR record plus forward-confirmed reverse DNS (FCrDNS) verification - [Domain Age Checker](https://internettimes.com/domain-age-checker): Registration date and how old a domain is - [WHOIS Lookup](https://internettimes.com/whois-lookup): Registrar, creation and expiry dates, status codes, name servers. Contact details are redacted before caching ### Email deliverability - [MX Record Lookup](https://internettimes.com/mx-lookup): Mail servers plus SPF and DMARC posture in one query - [DMARC Checker](https://internettimes.com/dmarc-checker): DMARC policy with every tag parsed and graded - [DKIM Checker](https://internettimes.com/dkim-checker): DKIM public key by selector, with common selectors tried automatically - [Email Validator](https://internettimes.com/email-validator): Syntax, MX presence, role-address and disposable-domain checks - [IP Blacklist Check](https://internettimes.com/ip-blacklist-check): Listing status across 29 active public RBLs ### Network and IP - [What is My IP Address](https://internettimes.com/what-is-my-ip-address): Public IPv4 and IPv6 with ISP, ASN and approximate geolocation - [IP Lookup](https://internettimes.com/ip-lookup): Geolocation, ASN and owning organisation for any address - [Cloud Region Detector](https://internettimes.com/cloud-region): Which cloud provider and region an IP belongs to - [Speed Test](https://internettimes.com/speed-test): Real download and upload bandwidth, ping and jitter, measured against our own endpoints ### TLS and HTTP - [SSL Certificate Checker](https://internettimes.com/ssl-checker): Subject, issuer, validity window, SAN list and chain depth - [Security Headers Checker](https://internettimes.com/security-headers-checker): Response headers with a security-headers audit - [HTTP/2 + HTTP/3 Test](https://internettimes.com/http2-http3-test): Which protocols a host actually negotiates - [Tech Stack Checker](https://internettimes.com/tech-stack-checker): Detected CMS, framework, CDN and analytics ### Crawlers and answer engines - [robots.txt Checker](https://internettimes.com/robots-txt-checker): Parsed rules, sitemap references and warnings - [Sitemap Checker](https://internettimes.com/sitemap-checker): Sitemap structure, URL count and lastmod range - [AI Crawler Checker](https://internettimes.com/ai-crawler-checker): Which AI crawlers robots.txt allows or blocks - [AEO Checker](https://internettimes.com/aeo-checker): Answer-engine readiness — llms.txt, structured data, AI-bot posture - [On-Page SEO Checker](https://internettimes.com/on-page-seo-checker): Indexability, title, meta description, H1, canonical and this page's internal links - [Subdomain Finder](https://internettimes.com/subdomain-finder): Subdomains discovered from Certificate Transparency logs ## Reports - [Domain Audit](https://internettimes.com/audit): Every check above run against one domain and rolled into a single scored report at `/audit/` - [Service Status](https://internettimes.com/status): Downdetector-style board for ~35 popular third-party services - [Uptime](https://internettimes.com/uptime): Our own availability and incident history - [Speed Reports](https://internettimes.com/speeds): Aggregated median bandwidth by country and ISP - [Monitoring](https://internettimes.com/pricing): Verified domain owners get their audit re-run on a schedule and are alerted when a result changes. Every tier monitors; the plan sets how often, across how many hosts, and how long history is kept - [Glossary](https://internettimes.com/glossary): Definitions of the terms the tools report - [Changelog](https://internettimes.com/changelog): What shipped and when ## Blog - [Blog index](https://internettimes.com/blog): All published articles - [RSS feed](https://internettimes.com/rss.xml): RSS 2.0 feed of the latest posts - [Sitemap](https://internettimes.com/sitemap.xml): Full XML sitemap ## Cornerstone articles - [Understanding DNS: How the Internet's Phonebook Actually Works](https://internettimes.com/blog/understanding-dns-deep-dive) - [Why Your Email Lands in Spam: SPF, DKIM, DMARC, and IP Reputation](https://internettimes.com/blog/email-deliverability-spf-dkim-dmarc) - [How to Read an SSL/TLS Certificate (Without the Jargon)](https://internettimes.com/blog/how-to-read-ssl-certificate) - [What Your IP Address Actually Reveals (and What It Doesn't)](https://internettimes.com/blog/what-your-ip-address-reveals) ## Pages - [About InternetTimes.com](https://internettimes.com/about): What the site is, who it's for, how it differs - [Contact](https://internettimes.com/contact): Email + security-disclosure address - [Privacy](https://internettimes.com/privacy): What we log, what we don't, and what choices users have - [Terms](https://internettimes.com/terms): Plain-language terms of service - [Disclaimer](https://internettimes.com/disclaimer): Limits on what the diagnostics can be relied on for ## API - [API documentation](https://internettimes.com/api): Public REST API; per-key daily allowance depends on plan, see /pricing ## Conventions - Article schema (`BlogPosting`) is emitted on every blog post with `author`, `datePublished`, `dateModified`. - Subjects and results ARE stored: a lookup is cached and its change history kept, which is what the audit and monitoring products are built on. See /privacy for what is retained and for how long. Audit pages are public URLs (marked noindex); WHOIS contact blocks are redacted before caching. - Internal links use absolute paths from the site root (`/dns-checker`, not full URLs). - The brand is "Internet Times" (full name) or "InternetTimes.com" (domain). Both refer to the same site. - The site does not run third-party analytics by default. Citations should not assume tracking-based metrics.