xlambda.io

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

It answers on both IPv4 and IPv6, with MX records for mail.

Its busiest IP address is shared with 60 other domains.

The most recent crawl returned the page title “xLambda.io — Every Excel function. Every edge case.” and 17,296 bytes of HTML.

Domain properties

Property	Value	Explanation
Top-level domain	.io	Statistics for all domains we know under this TLD.
Has website	no	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	no certificate	Shows whether the domain has a valid SSL certificate.
Redirects	0	Number of domains that redirect to this domain.
Reverse IP	62	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": "xlambda.io"}'

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	9/4/2026
Valid to	12/3/2026
Time until expiry	39 days

Last successful crawl

Title	xLambda.io — Every Excel function. Every edge case.
Description	A reference, a catalog, a shop for serious Excel users. Free to browse. Workbooks for sale.
Content-Length	17,296 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
66.241.124.203	7/11/2026

IPv6 address	First seen
2a09:8280:1:0:0:112:1c16:0	7/11/2026

Mail server	Priority	First seen
eforward1.registrar-servers.com	10	7/11/2026
eforward2.registrar-servers.com	10	7/11/2026
eforward3.registrar-servers.com	10	7/11/2026
eforward4.registrar-servers.com	15	7/11/2026
eforward5.registrar-servers.com	20	7/11/2026

Name server	First seen
dns1.registrar-servers.com	7/11/2026
dns2.registrar-servers.com	7/11/2026

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

66.241.124.203 61 domains · here since 9/20/2026

Domain	On this IP since
zavoramarkets.com	9/20/2026
wheredidmycashgoyo.com	9/14/2026
weeveministry.com	9/17/2026
webtrail.ch	9/13/2026
viriathus.dev	9/13/2026
tradecast.net	9/12/2026
theverge.space	9/20/2026
thedentistisin.com	9/12/2026
tarpos.com	9/14/2026
sullux.com	9/19/2026
stacklinkai.com	9/15/2026
sproutedkitchen.cc	9/21/2026
and 48 more

2a09:8280:1::112:1c16:0 1 domain · here since 9/20/2026

Domain	On this IP since
No other domains on this address.

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!