Dive into our data, search now!

We offer robust APIs and data services for domainers, data crawlers, security teams and many more.

384.6 M

Domains known to webXtrend

9.6 M

New domains in the last 30 days

62.8 M

Social media profiles detected

fspec.dev

Get an email when its DNS, website or certificate changes.

fspec.dev serves a website of its own over HTTPS. It answers on IPv4 only, with a valid TLS certificate.

3,459 other domains share an IP address with it.

The most recent crawl returned the page title “fspec ~ Stop fixing AI chaos. Start shipping quality.” and 52,325 bytes of HTML.

Domain properties

Property Value Explanation
Top-level domain .dev Statistics for all domains we know under this TLD.
Has website yes A website is hosted under the domain, which does not redirect to an external domain.
Has MX-record no The domain has an MX record.
External redirect no The domain redirects to another domain.
Redirect to https yes The domain redirects to https.
Redirect to www. no The domain redirects to www.domain.
Only with www. no The domain can only be reached with the subdomain "www".
Only DNS, no website no There are no A or AAAA records in DNS.
IP-Address only IPv4 Shows whether the domain only has IPv4 or IPv6 or both.
SSL-Certificate valid Shows whether the domain has a valid SSL certificate.
Redirects 0 Number of domains that redirect to this domain.
Reverse IP 3,459 Number of domains with the same IP(s).

This data through the API

The data on this page is also available as JSON: /lookup for the key facts, /reverseip, /redirect and /similar for the lists, and /dnshistory with Basic and Premium. A free account comes with an API key and 100 calls a day.

curl -X POST https://api.webxtrend.com/v1.0/lookup \
  -H 'Content-Type: application/json' \
  -d '{"token": "YOUR_TOKEN", "query": "fspec.dev"}'

Create a free account Read the API docs

Detected social media networks

No social networks found on this website.

Similar websites

Website Similarity
CodeLoop — Automated Verification for AI-Powered Development
Stop manually testing AI-generated code. CodeLoop automates the verify-diagnose-fix loop inside Cursor and Claude Code. 14-day free trial.
85 %
ticket-rs — Memory for Agents
AI-native issue tracking built for agentic coding workflows.
85 %
FlowDex — Code intelligence for AI-driven software development
FlowDex maps your codebase into living documentation, end-to-end flows, change impact and security insight — for developers, product owners and AI agents via...
85 %
Obsigna — sign and verify every AI agent action | Obsigna
SDKs, an MCP proxy, a hook, and a dashboard for generating and verifying tamper-evident audit trails for AI agent actions.
85 %
Fieldbook — Agent Skills for Claude Code & Codex
Find reviewed agent skills for Claude Code, Codex and other coding agents. Browse by task and stack, compare access labels, and copy install commands.
85 %
ChatML - AI Agent Orchestration for Claude Code
Ship code faster with parallel AI coding agents. ChatML runs multiple Claude sessions in isolated git worktrees on macOS, Windows, and Linux.
84 %
Codegen | AI Coding Tools, Guides & Comparisons
AI coding tool reviews, head-to-head comparisons, alternatives guides, and developer workflow insights from the team behind the Codegen agent platform.
84 %
CommandCenter — Your AI Agents, Under Control.
The desktop app that lets you build with AI coding tools and run autonomous AI agent workflows — all from one command center.
84 %
Breydan Personal Blog
AI-powered full-stack developer sharing insights on modern SaaS development, Next.js, and AI integration. From enterprise systems to indie hacking.
84 %
FixMe Agent — AI Code Review & Bug Prevention for Claude Code | FixMe AI
FixMe Agent is the #1 real-time AI code quality tool. Prevents bugs, security vulnerabilities, and code smells before they reach your files. Works with Claud...
84 %
What comes BEFORE the prompt? | DownCold.Academy
Spec-Driven Development methodology for AI-assisted teams. Reduce AI code review burden by 40% through specification-first workflows.
84 %
点令 - AI Coding Agent
84 %
Recep ŞEN - Software Engineer
I design the architecture behind Easyapp.ai at Taptoweb and work on distributed systems and AI agents.
84 %
Home | Bob Dempsey
I build performant, serverless, cloud based web applications with conversational AI features like LLM chat assistants, RAG over your own documents, and tool...
84 %
AI‑Native Engineering — Specs, Agents & DevSecOps
Actionable patterns for spec‑driven development, agentic DevSecOps, and automated compliance—build faster and safer with AI across clouds (mostly AWS).
84 %
Projexlight AI — Build production software with AI agents
Projexlight AI turns requirements into working software: epics, user stories, code, API tests and deployment, driven by AI agents with human review at every...
84 %
PairPrep - AI Pair Programming Setup
Setup your complete AI pair programming workflow in under 3 minutes. Generate CLAUDE.md, .cursorrules, copilot-instructions, subagents, hooks, commands, and...
84 %
ClawDE — The Host-First AI Development Environment
Your IDE. Your Rules. Runs entirely on your machine. Your code stays local. Your AI context follows you to every device on your network.
84 %
点令 - AI Coding Agent
84 %
Dispatched — The Developer Workspace for the AI-Native Era
A native Mac app to plan your work, direct your AI agents, and ship from one place. Works with Claude Code and Codex.
84 %

Websites whose start page offers something similar, found by comparing the text of their start pages, across languages. Near-identical copies, parking pages and error pages are left out. The full list of up to 100 comes through the API: similar websites.

Last SSL certificate

Issuer Amazon
Valid from 9/13/2026
Valid to 3/30/2027
Time until expiry 159 days

Last successful crawl

Title fspec ~ Stop fixing AI chaos. Start shipping quality.
Description Kanban-based project management and specification tool for AI agents that enforces ACDD workflow
Content-Length 52,325 bytes

Title and description as published by the page itself in its own <title> and <meta name="description"> tags.

DNS history

IPv4 address Last updated
18.244.18.124 10/17/2026
18.244.18.129 10/17/2026
18.244.18.6 10/17/2026
18.244.18.62 10/17/2026
18.245.46.11 2/16/2026
Name server Last updated
ns-1198.awsdns-21.org 10/17/2025
ns-1587.awsdns-06.co.uk 10/17/2025
ns-465.awsdns-58.com 10/17/2025
ns-987.awsdns-59.net 10/17/2025

The five most recent states of each record type. The full history comes through the API: DNS history.

Most recent redirect domains

No domains found.

Reverse IP neighbours

18.245.46.75 1,736 domains · here since 10/8/2026
Domain On this IP since
zogames-fun.net 10/18/2026
zoewetherall.com 9/13/2026
zilrettalabel.com 9/22/2026
zeqlo.in 9/16/2026
zavesmith.com 9/17/2026
zanepartain.com 9/15/2026
zahirpour.com 9/14/2026
zackbenson.com 9/21/2026
zachcordner.com 9/19/2026
zacharybako.com 10/21/2026
yvonnebelanger.com 9/13/2026
yurihasegawa.com 9/15/2026
and 1,723 more
18.245.46.66 581 domains · here since 10/8/2026
Domain On this IP since
zoremixy.com 9/18/2026
zenodhty.com 9/18/2026
zanepartain.com 9/15/2026
zacharyjklein.com 9/17/2026
youliq.com 10/14/2026
yoshimoto-kuji.jp 9/14/2026
yono777game.com 9/15/2026
yonkersbuschartercompany.com 10/19/2026
yojra.com 9/17/2026
yoanandselinagethitched.com 9/13/2026
ymysystems.com 9/17/2026
ydwpk.cn 9/18/2026
and 568 more
18.245.46.11 580 domains · here since 10/8/2026
Domain On this IP since
zubiss.com 9/13/2026
zocnotes.com 9/20/2026
zirux.com.br 10/17/2026
zilvy.co 10/11/2026
ytlemendoc.org 9/28/2026
yourcertificatesonline.com 10/16/2026
yourbetting.co.uk 9/26/2026
young-monte.com 9/14/2026
yinandyanginharmony.com 9/17/2026
yemenamericanfoundation.org 9/13/2026
yamatonikudori-sakurahara.com 9/13/2026
yabi.ai 9/14/2026
and 567 more
18.245.46.62 562 domains · here since 10/8/2026
Domain On this IP since
zoejmg.club 10/12/2026
zenitryd.pw 9/13/2026
zaim.net 9/13/2026
zackuhlenhuth.com 9/13/2026
yeti777.net 9/18/2026
yepdev.co.za 9/13/2026
yeogt.com 9/12/2026
yemenamericanfoundation.org 9/13/2026
yardstarllc.com 9/29/2026
yapiformsapp.com 9/20/2026
yamahaprecisionagricultureforum.com 10/20/2026
yamahaprecisionagriculture.com 10/11/2026
and 549 more

Sharing an address does not always mean sharing a server: on a CDN or a large hosting platform, millions of unrelated domains answer on the same few addresses. We measured how far that goes in Half the web sits on 276 IP addresses. The complete list of neighbours, also for an IP address, comes through the API: reverse IP lookup.