`certichecker.com`

DNSSEC	⚠️ Not signed
A	77.72.2.138^{🇬🇧 KRYSTAL77.72.2.0/24}
		PTR	`p138.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 +a +mx +ip4:77.72.2.138 include:relay.k.io ~all`
SOA	`ns1.krystal.uk`admin@demo.p138.lon.krystal.io 2026-03-05 #11

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291435

Same first word

certichecker.com

DNS History

5 records (5 active, 0 former)

●NSns1.krystal.uk2026-03-12 → 2026-03-23 · 2 obs

● 2026-03-12 14:40:32
● 2026-03-23 02:04:20

●NSns2.krystal.uk2026-03-12 → 2026-03-23 · 2 obs

● 2026-03-12 14:40:32
● 2026-03-23 02:04:20

●MXmx1.krystal.io2026-03-12 → 2026-03-23 · 2 obs

● 2026-03-12 14:40:32
● 2026-03-23 02:04:20

●MXmx2.krystal.io2026-03-12 → 2026-03-23 · 2 obs

● 2026-03-12 14:40:32
● 2026-03-23 02:04:20

●A77.72.2.1382026-03-12 → 2026-03-23 · 2 obs

● 2026-03-12 14:40:32
● 2026-03-23 02:04:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
certichecker.com	ns2.krystal.uk, ns1.krystal.uk	-

✅ Authoritative Response

Server:77.72.0.11

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certichecker.com (unsigned zone)

⏱️ Timing

Total: 590ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`77.72.2.138`
NS	2	`ns2.krystal.uk, ns1.krystal.uk`
MX	2	`mx1.krystal.io (pri: 10), mx2.krystal.io (pri: 20)`
TXT	1	`v=spf1 +a +mx +ip4:77.72.2.138 include:r`
SOA	1	`ns1.krystal.uk admin.demo.p138.lon.kryst`

Analysis

IP Addresses

certichecker.com resolves to one IP number: 77.72.2.138.

other host names including sgud.co.uk, caesoose.com, filmcollectables.com, 3grouterstore.co.uk and forthelandlords.com share IP numbers with certichecker.com.

Name Servers

certichecker.com is delegated to two name servers ns1.krystal.uk and ns2.krystal.uk.

certichecker.com shares the same name server setup as other domains, for instance alchimisti.co.uk, thecourieronline.co.uk, snicket.org, whereisyourheart.net and ifaroma.net.

certichecker.com at least partially shares name servers with other domains, for instance balniel.com, devonbutterflies.co.uk, footlaunch.co.uk, markwinwood.com and glanfordelectronics.com.

These name servers are commonly used with the following name servers: ns1.krystal.co.uk, ns2.krystal.co.uk, ns1.krystal.io, ns2.krystal.io, ns1.cloudhosting.uk, ns2.cloudhosting.uk, ns3.krystal.io, ns4.krystal.io, ns1.uksrv.co.uk and ns2.uksrv.co.uk.

Host names with one IP number:

ns1.krystal.uk points to 77.72.0.11

ns2.krystal.uk points to 139.162.230.184

Mail Servers

Two mail servers handle certichecker.com: mx1.krystal.io and mx2.krystal.io.

certichecker.com shares the same mail server setup as other domains, for instance calorgasbrighton.co.uk, companyeye.co.uk, learnenglishathome.org.uk, oscar.org.uk and jkgmasterclass.com.

Host names with two IP numbers:

The host name mx1.krystal.io points to 185.53.56.44 and 185.53.56.46; the host name mx2.krystal.io points to 185.53.56.45 and 185.53.56.47.

certichecker.com - robtex.com