`mail.davidrstjohn.com`

CNAME	`davidrstjohn.com`
DNSSEC	⚠️ Not signed
A	23.239.18.181^{🇺🇸 AKAMAI-LINODE-AP23.239.16.0/22 Akamai Technologies}
		PTR	`mail.davidrstjohn.com`
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`mail.davidrstjohn.com` ⭐
TXT	`v=spf1 mx -all`
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1772063225

`davidrstjohn.com`

	DNSSEC	⚠️ Not signed
	A	23.239.18.181^{🇺🇸 AKAMAI-LINODE-AP23.239.16.0/22 Akamai Technologies}
	NS	`dns1.registrar-servers.com` ⭐
	NS	`dns2.registrar-servers.com`
	MX	`mail.davidrstjohn.com` ⭐
	TXT	`v=spf1 mx -all`
	SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1772063225

PTR for

181.18.239.23.in-addr.arpa

MX for

davidrstjohn.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A23.239.18.1812017-01-07 → 2017-01-07 · 3 obs

● 2017-01-07 19:58:40
○ 2026-02-17 14:25:34
○ 2026-04-24 03:32:22

●CNAMEdavidrstjohn.com2026-02-17 → 2026-04-24 · 2 obs

● 2026-02-17 14:25:34
● 2026-04-24 03:32:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
davidrstjohn.com	dns1.registrar-servers.com, dns2.registrar-servers.com	4 records

✅ Authoritative Response

Server:156.154.133.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for davidrstjohn.com (unsigned zone)

⏱️ Timing

Total: 138ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`davidrstjohn.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)

Analysis

Mail Server Role

mail.davidrstjohn.com serves as the mail server for davidrstjohn.com.

IP Addresses

mail.davidrstjohn.com points to an IP address: 23.239.18.181.

Other host names, such as davidrstjohn.com, davidrstjohn.mobi and davidrstjohn.net, share IP numbers with mail.davidrstjohn.com.

Name Servers

Two name servers dns1.registrar-servers.com and dns2.registrar-servers.com handle the delegation for mail.davidrstjohn.com.

mail.davidrstjohn.com shares the same name server setup as other domains, for instance zoaar.com, dynecore.com, rfmlive.com, fireflyit.com and jaripel.com.

mail.davidrstjohn.com at least partially shares name servers with other domains, for instance sofiecat.com, hotforexoffers.com, kovak.net, eartx.com and oakleafbakeshop.com.

These name servers are commonly used alongside dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IP numbers:

dns1.registrar-servers.com points to 2610:a1:1024::200 and 156.154.132.200.

dns2.registrar-servers.com points to 2610:a1:1025::200 and 156.154.133.200.

Mail Servers

mail.davidrstjohn.com is handled by a single mail server.

The mail server setup for mail.davidrstjohn.com is the same as for other domains, such as davidrstjohn.com.

mail.davidrstjohn.com - robtex.com