replace.so

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

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

4,174 other domains share an IP address with it.

The most recent crawl returned the page title “Open-source tools and software alternatives” and 138,226 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.so	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	4,174	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": "replace.so"}'

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	10/3/2026
Valid to	1/1/2027
Time until expiry	71 days

Last successful crawl

Title	Open-source tools and software alternatives
Description	Browse reviewed open-source tools and find self-hostable software alternatives that fit how you work.
Content-Length	138,226 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
104.21.41.176	8/19/2026
172.67.149.19	8/19/2026

IPv6 address	Last updated
2606:4700:3035:0:0:0:6815:29b0	8/19/2026
2606:4700:3037:0:0:0:ac43:9513	8/19/2026

Name server	Last updated
aisha.ns.cloudflare.com	8/19/2026
burt.ns.cloudflare.com	8/19/2026

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

104.21.41.176 1,050 domains · here since 9/19/2026

Domain	On this IP since
zyn-ultra.com	10/11/2026
zpsgabcikovo.sk	9/12/2026
zovfxr.com	9/15/2026
zotgermane.art	10/16/2026
zmzen.me	9/13/2026
zjpwaam.cn	9/19/2026
zjiuxin.cn	9/17/2026
zicomachine.com	10/15/2026
zhengnian.club	9/13/2026
zfbjs.com	9/16/2026
zeroriskgrowthbuildoutcrew.com	9/18/2026
zelvor-goldenrocket.click	9/23/2026
and 1,037 more

172.67.149.19 1,050 domains · here since 9/19/2026

Domain	On this IP since
zyn-ultra.com	10/11/2026
zpsgabcikovo.sk	9/12/2026
zovfxr.com	9/15/2026
zotgermane.art	10/16/2026
zmzen.me	9/13/2026
zjpwaam.cn	9/19/2026
zjiuxin.cn	9/17/2026
zicomachine.com	10/15/2026
zhengnian.club	9/13/2026
zfbjs.com	9/16/2026
zeroriskgrowthbuildoutcrew.com	9/18/2026
zelvor-goldenrocket.click	9/23/2026
and 1,037 more

2606:4700:3035::6815:29b0 1,037 domains · here since 9/19/2026

Domain	On this IP since
zyn-ultra.com	10/11/2026
zpsgabcikovo.sk	9/12/2026
zovfxr.com	9/15/2026
zotgermane.art	10/16/2026
zmzen.me	9/13/2026
zjpwaam.cn	9/19/2026
zjiuxin.cn	9/17/2026
zicomachine.com	10/15/2026
zhengnian.club	9/13/2026
zfbjs.com	9/16/2026
zeroriskgrowthbuildoutcrew.com	9/18/2026
zelvor-goldenrocket.click	9/23/2026
and 1,024 more

2606:4700:3037::ac43:9513 1,037 domains · here since 9/19/2026

Domain	On this IP since
zyn-ultra.com	10/11/2026
zpsgabcikovo.sk	9/12/2026
zovfxr.com	9/15/2026
zotgermane.art	10/16/2026
zmzen.me	9/13/2026
zjpwaam.cn	9/19/2026
zjiuxin.cn	9/17/2026
zicomachine.com	10/15/2026
zhengnian.club	9/13/2026
zfbjs.com	9/16/2026
zeroriskgrowthbuildoutcrew.com	9/18/2026
zelvor-goldenrocket.click	9/23/2026
and 1,024 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!