numstack.net

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

3,894 other domains share an IP address with it.

The most recent crawl returned the page title “NumStack — AI Cost Calculators for Builders” and 72,651 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.net	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	3,894	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": "numstack.net"}'

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	10/6/2026
Valid to	1/4/2027
Time until expiry	79 days

Last successful crawl

Title	NumStack — AI Cost Calculators for Builders
Description	Free AI cost calculators. Token pricing, model comparison, agent workflows. Know your AI spend before you build. 30+ models, real pricing.
Content-Length	72,651 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
104.21.55.170	4/28/2026
172.67.171.196	4/28/2026
84.32.84.30	4/21/2026
88.222.222.209	4/21/2026
92.113.16.206	4/14/2026

IPv6 address	Last updated
2606:4700:3033:0:0:0:6815:37aa	6/21/2026
2606:4700:3034:0:0:0:ac43:abc4	6/21/2026
2606:4700:3030:0:0:0:6815:37aa	4/28/2026
2606:4700:3035:0:0:0:ac43:abc4	4/28/2026
2a02:4780:84:5587:a3d:9a54:cbd5:503a	4/21/2026

Name server	Last updated
alexia.ns.cloudflare.com	4/14/2026
marvin.ns.cloudflare.com	4/14/2026

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

104.21.55.170 976 domains · here since 9/21/2026

Domain	On this IP since
zxbnvm.store	9/13/2026
zorrus-agency.ru	9/19/2026
zonapolarguayaquil.com	9/23/2026
zmavweb.com	9/19/2026
zis.lt	10/9/2026
zghygame.top	9/18/2026
zfbrr.com	9/21/2026
zetaprimeralinea.com	10/5/2026
zerrandevu.com	10/7/2026
zenmarteellc.com	9/23/2026
zenfluvo.com	9/22/2026
zcepm.com	9/21/2026
and 963 more

172.67.171.196 976 domains · here since 9/21/2026

Domain	On this IP since
zxbnvm.store	9/13/2026
zorrus-agency.ru	9/19/2026
zonapolarguayaquil.com	9/23/2026
zmavweb.com	9/19/2026
zis.lt	10/9/2026
zghygame.top	9/18/2026
zfbrr.com	9/21/2026
zetaprimeralinea.com	10/5/2026
zerrandevu.com	10/7/2026
zenmarteellc.com	9/23/2026
zenfluvo.com	9/22/2026
zcepm.com	9/21/2026
and 963 more

2606:4700:3033::6815:37aa 971 domains · here since 9/21/2026

Domain	On this IP since
zxbnvm.store	9/13/2026
zorrus-agency.ru	9/19/2026
zonapolarguayaquil.com	9/23/2026
zmavweb.com	9/19/2026
zis.lt	10/9/2026
zghygame.top	9/18/2026
zfbrr.com	9/21/2026
zetaprimeralinea.com	10/5/2026
zerrandevu.com	10/7/2026
zenmarteellc.com	9/23/2026
zenfluvo.com	9/22/2026
zcepm.com	9/21/2026
and 958 more

2606:4700:3034::ac43:abc4 971 domains · here since 9/21/2026

Domain	On this IP since
zxbnvm.store	9/13/2026
zorrus-agency.ru	9/19/2026
zonapolarguayaquil.com	9/23/2026
zmavweb.com	9/19/2026
zis.lt	10/9/2026
zghygame.top	9/18/2026
zfbrr.com	9/21/2026
zetaprimeralinea.com	10/5/2026
zerrandevu.com	10/7/2026
zenmarteellc.com	9/23/2026
zenfluvo.com	9/22/2026
zcepm.com	9/21/2026
and 958 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!