`mail.simprograms.com`

CNAME	`simprograms.com`
DNSSEC	⚠️ Not signed
A	77.72.2.151^{🇬🇧 KRYSTAL77.72.2.0/24}
		PTR	`p151.lon.krystal.io`
NS	`ns1.krystal.uk` ⭐
		A	77.72.0.11^{🇬🇧 KRYSTAL77.72.0.0/21 Krystal Hosting Ltd}
			PTR	`ns1.krystal.uk`
NS	`ns2.krystal.uk`
		A	139.162.230.184^{🇬🇧 AKAMAI-LINODE-AP139.162.224.0/19 Akamai Technologies}
			PTR	`ns2.krystal.uk`
MX	`mx1.krystal.io` ⭐
		A	185.53.56.44^{🇬🇧 KRYSTAL185.53.56.0/22}
			PTR	`mx1.strikemail.co.uk`
		A	185.53.56.46^{🇬🇧 KRYSTAL185.53.56.0/22}
			PTR	`mx1.strikemail.co.uk`
MX	`mx2.krystal.io`⁽²⁰⁾
		A	185.53.56.45^{🇬🇧 KRYSTAL185.53.56.0/22}
			PTR	`mx2.strikemail.co.uk`
		A	185.53.56.47^{🇬🇧 KRYSTAL185.53.56.0/22}
			PTR	`mx2.strikemail.co.uk`
TXT	`v=spf1 ip4:77.72.1.48 ip4:77.72.2.151 ip4:77.72.2.92 ip4:185.194.90.22 includ...`
SOA	`ns1.krystal.uk`admin@demo.p151.lon.krystal.io 2026-05-22 #5

`simprograms.com`

	DNSSEC	⚠️ Not signed
	A	77.72.2.151^{🇬🇧 KRYSTAL77.72.2.0/24}
	NS	`ns1.krystal.uk` ⭐
	NS	`ns2.krystal.uk`
	MX	`mx1.krystal.io` ⭐
	MX	`mx2.krystal.io`⁽²⁰⁾
	TXT	`v=spf1 ip4:77.72.1.48 ip4:77.72.2.151 ip4:77.72.2.92 ip4:185.194.90.22 includ...`
	SOA	`ns1.krystal.uk`admin@demo.p151.lon.krystal.io 2026-05-22 #5

WOT: SAFE (94/100)
WOT: SAFE (94/100)

Previously MX for

simprograms.com

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DNS History

2 records (1 active, 1 former)

○A77.72.4.102015-08-05 → 2015-10-24 · 4 obs

● 2015-08-05 00:58:42
● 2015-10-24 09:42:14
○ 2016-01-18 23:28:42
○ 2026-06-11 19:37:56

●CNAMEsimprograms.com2026-06-11 → 2026-06-11 · 1 obs

● 2026-06-11 19:37:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net...	-
simprograms.com	ns2.krystal.uk, ns1.krystal.uk	-

✅ Authoritative Response

Server:139.162.230.184

NS records: ns2.krystal.uk, ns1.krystal.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simprograms.com (unsigned zone)

⏱️ Timing

Total: 549ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`simprograms.com`

Analysis

IP Addresses

mail.simprograms.com directs to one IP number, which is 77.72.2.151.

Among the host names that share IP numbers with mail.simprograms.com are hookahshop.co.uk, simprograms.com, shishainfo.com and two others.

Name Servers

DNS delegation for mail.simprograms.com points to two name servers: ns1.krystal.uk and ns2.krystal.uk.

mail.simprograms.com has the same name server delegation as a number of other domains, such as thechiltons.com, ukprize.co.uk, fullife.com and two more.

mail.simprograms.com has at least partial name server overlap with other domains, such as woweedesign.co.uk, radiocodehelp.com, sapphiredrivingschool.com and two others.

ns1.krystal.co.uk, ns2.krystal.co.uk and ns1.krystal.io — plus 7 other name servers — are commonly paired with these name servers.

ns1.krystal.uk directs to 77.72.0.11 and ns2.krystal.uk directs to 139.162.230.184; each host name points to exactly one IP number.

Mail Servers

The MX records for mail.simprograms.com point to two mail servers: mx1.krystal.io and mx2.krystal.io.

mail.simprograms.com has the same mail server arrangement as a number of other domains, for example dihassall.com, connect-ec.com, literaryreview.co.uk and two more.

mx1.krystal.io directs to 185.53.56.44 and 185.53.56.46. mx2.krystal.io directs to 185.53.56.45 and 185.53.56.47. Each host name carries two IP addresses.

mail.simprograms.com - robtex.com