flaresend.dev

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

flaresend.dev serves a website of its own. It answers on both IPv4 and IPv6, with a valid TLS certificate and MX records for mail.

Its busiest IP address is shared with 1,007 other domains.

The most recent crawl returned the page title “Flaresend: open-source transactional email on Cloudflare” and 165,691 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	no	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	3,998	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": "flaresend.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	Google Trust Services
Valid from	9/27/2026
Valid to	12/26/2026
Time until expiry	63 days

Last successful crawl

Title	Flaresend: open-source transactional email on Cloudflare
Description	Open-source transactional email that runs in your own Cloudflare account. A Resend-style API, logs, retries, templates and webhooks. MIT licensed.
Content-Length	165,691 bytes

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

DNS history

IPv4 address	First seen
104.21.13.35	10/1/2026
172.67.197.164	10/1/2026

IPv6 address	First seen
2606:4700:3030:0:0:0:ac43:c5a4	10/1/2026
2606:4700:3036:0:0:0:6815:d23	10/1/2026

Mail server	Priority	First seen
aspmx.l.google.com	1	10/1/2026
alt1.aspmx.l.google.com	5	10/1/2026
alt2.aspmx.l.google.com	5	10/1/2026
alt3.aspmx.l.google.com	10	10/1/2026
alt4.aspmx.l.google.com	10	10/1/2026

Name server	First seen
ashley.ns.cloudflare.com	10/1/2026
mark.ns.cloudflare.com	10/1/2026

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

104.21.13.35 1,008 domains · here since 9/28/2026

Domain	On this IP since
zy-r.com	9/14/2026
zumrutkuafor.net	9/23/2026
zryvona.com	9/18/2026
zqnzb.com	10/18/2026
zorobetway.bet	9/16/2026
zhetl5m.cn	9/22/2026
zhengquwl.cn	9/29/2026
zhbuy.cn	9/21/2026
zerohand.jp	9/21/2026
zendspiritu.ru	10/23/2026
zarahstar.com	9/19/2026
zamconsultingvlana.com	9/23/2026
and 995 more

172.67.197.164 1,008 domains · here since 9/28/2026

Domain	On this IP since
zy-r.com	9/14/2026
zumrutkuafor.net	9/23/2026
zryvona.com	9/18/2026
zqnzb.com	10/18/2026
zorobetway.bet	9/16/2026
zhetl5m.cn	9/22/2026
zhengquwl.cn	9/29/2026
zhbuy.cn	9/21/2026
zerohand.jp	9/21/2026
zendspiritu.ru	10/23/2026
zarahstar.com	9/19/2026
zamconsultingvlana.com	9/23/2026
and 995 more

2606:4700:3030::ac43:c5a4 991 domains · here since 9/28/2026

Domain	On this IP since
zy-r.com	9/14/2026
zumrutkuafor.net	9/23/2026
zryvona.com	9/18/2026
zqnzb.com	10/18/2026
zorobetway.bet	9/16/2026
zhetl5m.cn	9/22/2026
zhengquwl.cn	9/17/2026
zhbuy.cn	9/21/2026
zerohand.jp	9/21/2026
zendspiritu.ru	10/23/2026
zarahstar.com	9/19/2026
zamconsultingvlana.com	9/23/2026
and 978 more

2606:4700:3036::6815:d23 991 domains · here since 9/28/2026

Domain	On this IP since
zy-r.com	9/14/2026
zumrutkuafor.net	9/23/2026
zryvona.com	9/18/2026
zqnzb.com	10/18/2026
zorobetway.bet	9/16/2026
zhetl5m.cn	9/22/2026
zhengquwl.cn	9/17/2026
zhbuy.cn	9/21/2026
zerohand.jp	9/21/2026
zendspiritu.ru	10/23/2026
zarahstar.com	9/19/2026
zamconsultingvlana.com	9/23/2026
and 978 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!