`mail.doublequick.com`

DNSSEC	⚠️ Not signed
A	206.41.240.83^{🇺🇸 AS4574206.41.224.0/19 Internet Doorway}
		PTR	`corp-svr-exch.doublequick.com`

`doublequick.com`

	DNSSEC	⚠️ Not signed
	A	206.41.229.100^{🇺🇸 AS4574206.41.224.0/19 Internet Doorway}
	NS	`ns83.worldnic.com` ⭐
	NS	`ns84.worldnic.com`
	MX	`netdoor-mx.email-protect.gosecure.net` ⭐
	TXT	`amazonses:bTAbpdewY60FP3sleQE/Qqf8I21YKAcW3Gh7+njpy2Q=`
	TXT	`enlgrap4notqd30usuaughcttl`
	TXT	`v=spf1 a mx ptr ip4:206.41.251.170 ip4:206.41.228.0/24 ip4:208.80.200.0/21 ip...`
	TXT	`MS=3267C94A9D2B2BCA1E47CF185E0FFE515E897918`
	SOA	`NS83.WORLDNIC.com`namehost@WORLDNIC.com serial=125121209

Same first word

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DNS History

2 records (1 active, 1 former)

●A206.41.240.832026-03-28 → 2026-07-28 · 3 obs

○ 2016-09-07 19:22:28
● 2026-03-28 18:40:04
● 2026-07-28 14:19:18

○A208.137.145.42007-11-26 → 2016-09-07 · 4 obs

● 2007-11-26 19:59:48
● 2016-09-07 19:22:28
○ 2026-03-28 18:40:04
○ 2026-07-28 14:19:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
doublequick.com	ns83.worldnic.com, ns84.worldnic.com	2 records

✅ Authoritative Response

Server:162.159.27.117

NS records: ns83.worldnic.com, ns84.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doublequick.com (unsigned zone)

⏱️ Timing

Total: 113ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`206.41.240.83`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns83.worldnic.com, ns84.worldnic.com)

Analysis

IP Addresses

mail.doublequick.com directs to one IP number, which is 206.41.240.83.

There are other host names — corp-svr-exch.doublequick.com among them — that share IP numbers with mail.doublequick.com.

mail.doublequick.com - dns.ninja