`mail.jackcobb.com`

DNSSEC	⚠️ Not signed
A	192.252.156.20^{🇺🇸 ICDSoft192.252.144.0/20 SURESUPPORT LLC Waltham, MA, USA}
		PTR	`s446.sureserver.com`

`jackcobb.com`

	DNSSEC	⚠️ Not signed
	A	192.252.156.20^{🇺🇸 ICDSoft192.252.144.0/20 SURESUPPORT LLC Waltham, MA, USA}
	NS	`ns1.s446.sureserver.com` ⭐
	NS	`ns2.s446.sureserver.com`
	MX	`mail.jackcobb.com` ⭐
	TXT	`v=spf1 a mx include:s446.smtp-spf.sureserver.com ~all`
	SOA	`ns1.s446.sureserver.com`hostmaster@jackcobb.com serial=1777361230

MX for

jackcobb.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A192.252.156.202026-02-19 → 2026-04-28 · 2 obs

● 2026-02-19 01:29:16
● 2026-04-28 07:27:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
jackcobb.com	ns1.s446.sureserver.com, ns2.s446.sureserver.com	2 records

✅ Authoritative Response

Server:192.252.157.20

NS records: ns1.s446.sureserver.com, ns2.s446.sureserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jackcobb.com (unsigned zone)

⏱️ Timing

Total: 203ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.252.156.20`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.s446.sureserver.com, ns2.s446.sureserver.com)

Analysis

Mail Server Role

mail.jackcobb.com is the mail server for jackcobb.com.

IP Addresses

mail.jackcobb.com points to a single IP number: 192.252.156.20.

other host names for instance mail.jdspear.com, mail.macpictures.com, jdspear.com, www.everydogcan.com and mail.dralexkrempa.com share IP numbers with mail.jackcobb.com.

mail.jackcobb.com - robtex.com