`sl.castuk.com`

CNAME	`custom-tracking.salesloft.com`
DNSSEC	⚠️ Not signed
A	18.210.224.221^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
		PTR	`ec2-18-210-224-221.compute-1.amazonaws.com`
A	52.73.63.50^{🇺🇸 Amazon52.72.0.0/15 EC2 IAD prefix}
A	54.85.60.153^{🇺🇸 Amazon54.84.0.0/15 EC2 IAD prefix}

`castuk.com`

	DNSSEC	⚠️ Not signed
	A	46.101.86.172^{🇬🇧 DIGITALOCEAN46.101.80.0/20 DigitalOcean}
	NS	`ns0.zen.co.uk` ⭐
	NS	`ns1.zen.co.uk`
	MX	`castuk-com.mail.protection.outlook.com` ⭐
	TXT	`google-site-verification=JqQgG6kK6sfFZE5LulfU9NyWBat33q6UDhRqAuHJRlI`
	TXT	`v=spf1 ip4:88.98.253.230/32 ip4:109.111.201.240/32 include:spf.protection.out...`
	TXT	`linkedin-site-verification=292108d0-ac58-4db6-829d-548f44d4e380`
	TXT	`MS=ms38060041`
	TXT	`google-site-verification=QRlMQwmZ9ys4XdAkNy4rAqM6ChiLHXDDHTVhUIO9ees`
	SOA	`ns0.zen.co.uk`dnsmaster@zen.co.uk 2021-04-15 #7

WOT: SAFE (60/100)

Same first word

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sl.ge

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sl.co.kr

sl.is

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ls.com.au

ls.gov.ms

ls.be

ls.com

ls.st

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ls.ca

ls.nl

ls.net.ar

ls.adv.br

ls.ly

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ls.ph

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ls.edu.br

ls.consulting

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ls.fyi

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DNS History

1 record (1 active, 0 former)

●CNAMEcustom-tracking.salesloft.com2026-02-17 → 2026-03-09 · 2 obs

● 2026-02-17 11:08:10
● 2026-03-09 07:15:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
castuk.com	ns0.zen.co.uk, ns1.zen.co.uk	-

✅ Authoritative Response

Server: 212.23.8.1

NS records: ns0.zen.co.uk, ns1.zen.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for castuk.com (unsigned zone)

⏱️ Timing

Total: 668ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`custom-tracking.salesloft.com`

Analysis

IP Addresses

sl.castuk.com resolves to three IP numbers: 18.210.224.221, 52.73.63.50 and 54.85.60.153.

Other host names, for instance custom-tracking.salesloft.com and ec2-54-85-60-153.compute-1.amazonaws.com, share IP numbers with sl.castuk.com.

sl.castuk.com - robtex.com

sl.castuk.com

castuk.com