sinatra.dev

sinatra.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.

245,240 other domains share an IP address with it.

The most recent crawl returned the page title “sinatra.dev: assign the issue. come back to a PR.” and 111,435 bytes of HTML. The site links to X and LinkedIn profiles.

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	245,240	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": "sinatra.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	9/29/2026
Valid to	12/28/2026
Time until expiry	70 days

Last successful crawl

Title	sinatra.dev: assign the issue. come back to a PR.
Description	assign a linear issue to sinatra, or add its label to a github one. it opens a branch, writes the code, runs your tests, and ships a pull request.
Content-Length	111,435 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	10/17/2026
216.150.16.1	10/17/2026
216.150.1.129	10/9/2026
216.150.16.129	10/9/2026
216.150.1.1	10/1/2026

Mail server	Priority	Last updated
mx1.privateemail.com	10	5/28/2026
mx2.privateemail.com	10	5/28/2026
eforward1.registrar-servers.com	10	5/6/2026
eforward2.registrar-servers.com	10	5/6/2026
eforward3.registrar-servers.com	10	5/6/2026

Name server	Last updated
lou.ns.cloudflare.com	5/28/2026
melany.ns.cloudflare.com	5/28/2026
dns1.registrar-servers.com	5/6/2026
dns2.registrar-servers.com	5/6/2026

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

216.150.16.65 122,713 domains · here since 10/9/2026

Domain	On this IP since
zzzyo.com	10/12/2026
zzz-inc.com	10/8/2026
zzim.site	9/18/2026
zzhvtm.info	9/26/2026
zzgyjx.com	10/7/2026
zzchdz.info	10/12/2026
zzboard.com	9/29/2026
zzart.app	10/6/2026
zzalkiro.com	10/18/2026
zywpkd.info	10/7/2026
zyvo.marketing	10/12/2026
zyvahn.com	10/8/2026
and 122,700 more

216.150.1.65 122,527 domains · here since 10/9/2026

Domain	On this IP since
zzzzhub.xyz	10/7/2026
zzzila.fun	10/7/2026
zzpugz.hr	10/9/2026
zzjxhl.info	10/16/2026
zzjprf.info	10/7/2026
zzgyjx.com	10/7/2026
zzen.io	10/17/2026
zzcxpw.info	10/18/2026
zzboard.com	10/10/2026
zywddx.site	10/13/2026
zyvo.marketing	10/12/2026
zyvahn.com	10/8/2026
and 122,514 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!