wrenapp.dev

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

wrenapp.dev serves a website of its own over HTTPS. It answers on both IPv4 and IPv6, with a valid TLS certificate.

4,090 other domains share an IP address with it.

The most recent crawl returned the page title “Wren — A modern, local-first reference manager.” and 61,846 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	Both	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	4,090	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": "wrenapp.dev"}'

Create a free account Read the API docs

Similar websites

Website	Similarity
paperlibrary.org Paper Library — paperlibrary.org Upload, annotate, and organize your PDF library in one place. Highlight, draw, add sticky notes, and search instantly — on any device.	84 %
sghub.cn SG Hub — Local-First Academic Literature Management with AI Search eight academic databases, read and annotate PDFs, and get structured AI analysis. Your papers never leave your machine. Free for Windows and macOS.	84 %
getcahier.com Cahier - Enhance your Reading Cahier is the note-taking tool for researchers and diligent readers. Seamlessly collect, read and synthesize in the same app.	84 %
epistemereader.com Episteme - The art of reading, perfected. A sleek, fast, local-first reader for PDFs, EPUBs, and your entire digital library.	84 %
sciwand.com Sciwand: The Reference Manager That Reads Your Papers Search, analyse, write and cite, from one app. Standalone, or connected to your library in Zotero, Mendeley, EndNote or Bookends. A full citation engine, a c...	83 %
matinta.com Matinta - Ebook Reader & Annotations A beautiful e-reader built for researchers. Read EPUBs and HTML publications with powerful annotation tools.	82 %
mendeley.app Mendeley — Where research comes together A refined research library for papers, references, annotations and citations — organized in one calm Mendeley workspace.	82 %
notemd.org Replace Zotero and Obsidian with one Mac app \| note.md note.md replaces the Zotero, Obsidian and PDF-reader stack with a single Mac app. Read papers, keep every citation anchored to the passage it came from, and...	82 %
cataloger.me Cataloger.me — Read less online. Keep structured notes. Read less online. Cataloger.me turns links into structured markdown notes on your Mac—TL;DR, key points, diagrams—and files them into your personal knowledge...	82 %
readica.pro Readica \| Research Papers, Organized Readica helps students and researchers organize academic PDFs, discover related papers, read with context, and keep notes close to the source.	82 %
obsidianreader.app Obsidian Ebook Reader — Premium EPUB & PDF Reader for Windows A private, offline ebook reader for Windows. Organize EPUBs and PDFs from your folders with powerful library management and zero data collection.	82 %
litlas.ai Litlas \| AI-powered Reference Manager Search papers, explore citation graphs, and organize your references. Send PDFs to your favorite AI. Free plan available, no credit card required.	82 %
tomomark.com TomoMark: A Mac library for your papers, with translation and AI TomoMark is a native macOS library for your papers, books and manuals. Import PDF, epub, docx, Markdown, text and images, get the title, author, year and DOI...	82 %
arboreta.app Arboreta — the reference manager that fills itself A reference manager for researchers that fills itself as you read. Citations, figures, full text and your notes become a library you own — plain files, on yo...	82 %
gammapdf.com Gamma PDF — Read papers. Keep what you learn. Gamma is an open-source, self-hosted PDF annotator with outliner notes for researchers: highlight papers, draw on them, keep notes with live math, ask an AI,...	82 %
notebooksapp.com Notebooks: Write and Organize • Notebooks Notebooks is a writing app, note taker, task manager, file manager, PDF reader and Markdown composer. It creates PDF and eBooks, scans documents and applies...	81 %
scholarlynotes.com ScholarlyNotes: your words, your sources A research workspace for finding papers, building a library, and writing fully cited notes and drafts in your own words. AI can help you read (summaries, key...	81 %
pierian.uk Fontis - Your Digital Research Hub Fontis - AI-powered digital reference library for students and researchers. Seamlessly integrate citations directly into Microsoft Word.	81 %
zave.to Zave — Your second brain for the web Zave — save links, notes, images, and files in one beautiful library. Synced across web, browser extension, and iOS.	81 %
neurixread.com Neurix Reader — AI-Powered Academic PDF Reader & Smart Notes Generator Upload any academic PDF, auto-detect chapters, and generate AI study notes side by side. LaTeX support, scanned PDF vision, 3 free notes a day — no card requ...	81 %

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	Google Trust Services
Valid from	10/7/2026
Valid to	1/5/2027
Time until expiry	77 days

Last successful crawl

Title	Wren — A modern, local-first reference manager.
Description	Wren is a modern, local-first reference manager for research papers — Zotero-compatible, programmable, and yours. Read, annotate, organize, and search your library, with on-device document understanding and optional, bring-your-own AI.
Content-Length	61,846 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
104.21.58.12	6/22/2026
172.67.153.225	6/22/2026

IPv6 address	Last updated
2606:4700:3033:0:0:0:6815:3a0c	7/1/2026
2606:4700:3036:0:0:0:ac43:99e1	7/1/2026
2606:4700:3033:0:0:0:6815:3a0c	6/22/2026
2606:4700:3033:0:0:0:ac43:99e1	6/22/2026

Name server	Last updated
eva.ns.cloudflare.com	6/22/2026
kyree.ns.cloudflare.com	6/22/2026

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

104.21.58.12 1,030 domains · here since 10/18/2026

Domain	On this IP since
zzqq67.com	9/21/2026
zyemt.com	9/12/2026
zuwyalpay.id	9/13/2026
zuruestung.ch	9/14/2026
zshysc.net	9/15/2026
zscope.org	10/19/2026
zoome-casino-onlineau.com	9/18/2026
zh-home-baijiale.com.cn	9/20/2026
zeus88.ink	9/21/2026
zeugmabaklava.com.tr	10/9/2026
zervion-jackpotgold.click	10/16/2026
zenosbet.fun	10/11/2026
and 1,017 more

172.67.153.225 1,030 domains · here since 10/18/2026

Domain	On this IP since
zzqq67.com	9/21/2026
zyemt.com	9/12/2026
zuwyalpay.id	9/13/2026
zuruestung.ch	9/14/2026
zshysc.net	9/15/2026
zscope.org	10/19/2026
zoome-casino-onlineau.com	9/18/2026
zh-home-baijiale.com.cn	9/20/2026
zeus88.ink	9/21/2026
zeugmabaklava.com.tr	10/9/2026
zervion-jackpotgold.click	10/16/2026
zenosbet.fun	10/11/2026
and 1,017 more

2606:4700:3033::6815:3a0c 1,015 domains · here since 10/18/2026

Domain	On this IP since
zzqq67.com	9/21/2026
zyemt.com	9/12/2026
zuwyalpay.id	9/13/2026
zuruestung.ch	9/14/2026
zshysc.net	9/15/2026
zscope.org	10/19/2026
zoome-casino-onlineau.com	9/18/2026
zh-home-baijiale.com.cn	9/20/2026
zeus88.ink	9/21/2026
zeugmabaklava.com.tr	9/27/2026
zervion-jackpotgold.click	10/16/2026
yuhuose3.cyou	9/13/2026
and 1,002 more

2606:4700:3036::ac43:99e1 1,015 domains · here since 10/18/2026

Domain	On this IP since
zzqq67.com	9/21/2026
zyemt.com	9/12/2026
zuwyalpay.id	9/13/2026
zuruestung.ch	9/14/2026
zshysc.net	9/15/2026
zscope.org	10/19/2026
zoome-casino-onlineau.com	9/18/2026
zh-home-baijiale.com.cn	9/20/2026
zeus88.ink	9/21/2026
zeugmabaklava.com.tr	9/27/2026
zervion-jackpotgold.click	10/16/2026
yuhuose3.cyou	9/13/2026
and 1,002 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.

Dive into our data, search now!