rulesync.dev

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

rulesync.dev serves a website of its own over HTTPS and under www. It answers on IPv4 only, with a valid TLS certificate and MX records for mail.

629,671 other domains share an IP address with it.

The most recent crawl returned the page title “RuleSync — Sync CLAUDE.md Across Repos” and 65,781 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	yes	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.	yes	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	629,671	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": "rulesync.dev"}'

Create a free account Read the API docs

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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	Let's Encrypt
Valid from	9/27/2026
Valid to	12/26/2026
Time until expiry	66 days

Last successful crawl

Title	RuleSync — Sync CLAUDE.md Across Repos
Description	Manage and sync your AI coding rules across all your repositories
Content-Length	65,781 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
216.150.1.1	4/2/2026

Mail server	Priority	Last updated
eforward1.registrar-servers.com	10	4/29/2026
eforward2.registrar-servers.com	10	4/29/2026
eforward3.registrar-servers.com	10	4/29/2026
eforward4.registrar-servers.com	15	4/29/2026
eforward5.registrar-servers.com	20	4/29/2026

Name server	Last updated
dns1.registrar-servers.com	4/2/2026
dns2.registrar-servers.com	4/2/2026

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

216.150.1.1 629,671 domains · here since 9/17/2026

Domain	On this IP since
zzzzhub.xyz	10/19/2026
zzzsg.com	10/17/2026
zzzpost.com	9/28/2026
zzzip.kr	10/8/2026
zzz.toys	9/23/2026
zzz.bingo	10/12/2026
zzz.art	10/8/2026
zzxgim.com	9/16/2026
zztbsw.info	10/4/2026
zzpzt.cn	9/14/2026
zzpwerkvinden.nl	9/15/2026
zzppy.nl	9/16/2026
and 629,658 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!