`mail.customsknowledge.com`

DNSSEC	⚠️ Not signed
A	91.198.170.115^{🇳🇱 Esmero91.198.170.0/23 ESMERO-BLOCK-1}
		PTR	`plesk15.esmero.nl`

`customsknowledge.com`

	DNSSEC	⚠️ Not signed
	A	91.198.170.115^{🇳🇱 Esmero91.198.170.0/23 ESMERO-BLOCK-1}
	NS	`ns2.esmero.nl` ⭐
	NS	`ns1.esmero.nl`
	MX	`mxs10.esmero.nl` ⭐
	MX	`mxs20.esmero.nl`⁽²⁰⁾
	TXT	`v=spf1 +a +mx +a:plesk7.esmero.nl include:spf.esmero.nl ~all`
	SOA	`ns2.esmero.nl`administratie@customsknowledge.nl 2026-08-07 #2

Previously MX for

customsknowledge.com

mail.customsknowledge.com

Same first word

mail.ne.kr

mail.support

mail.de

mail.hacca.jp

mail.moo.jp

mail.new

mail.teva

mail.gov.al

mail.kapsi.fi

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mail.as

mail.ir

mail.net.ru

mail.cz

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mail.so

mail.ind.in

mail.com.in

mail.noip.us

mail.hippy.jp

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mail.main.jp

mail.graphics

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mlai.com

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mail.dnsalias.com

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mail.barcelona

DNS History

7 records (1 active, 6 former)

○NSns1.openprovider.nl2015-10-18 → 2016-08-14 · 4 obs

● 2015-10-18 18:13:44
● 2016-08-14 07:43:50
○ 2026-07-09 15:37:32
○ 2026-08-08 03:40:28

○NSns2.openprovider.be2015-10-18 → 2016-08-14 · 4 obs

● 2015-10-18 18:13:44
● 2016-08-14 07:43:50
○ 2026-07-09 15:37:32
○ 2026-08-08 03:40:28

○NSns3.openprovider.eu2015-10-18 → 2016-08-14 · 4 obs

● 2015-10-18 18:13:44
● 2016-08-14 07:43:50
○ 2026-07-09 15:37:32
○ 2026-08-08 03:40:28

○MXmail.customsknowledge.com2015-10-18 → 2016-03-28 · 4 obs

● 2015-10-18 18:13:44
● 2016-03-28 20:42:20
○ 2016-08-14 07:43:50
○ 2026-08-08 03:40:28

○A31.25.99.232015-05-22 → 2016-03-28 · 4 obs

● 2015-05-22 13:07:52
● 2016-03-28 20:42:20
○ 2016-08-14 07:43:50
○ 2026-08-08 03:40:28

●A91.198.170.1152026-07-09 → 2026-08-08 · 3 obs

○ 2016-08-14 07:43:50
● 2026-07-09 15:37:32
● 2026-08-08 03:40:28

○CNAMEcustomsknowledge.com2015-05-22 → 2016-08-14 · 4 obs

● 2015-05-22 13:07:52
● 2016-08-14 07:43:50
○ 2026-07-09 15:37:32
○ 2026-08-08 03:40:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net, h.gtld-servers.net...	-
customsknowledge.com	ns1.esmero.nl, ns2.esmero.nl	-

✅ Authoritative Response

Server:91.198.170.10

NS records: ns1.esmero.nl, ns2.esmero.nl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for customsknowledge.com (unsigned zone)

⏱️ Timing

Total: 491ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.198.170.115`

Analysis

IP Addresses

mail.customsknowledge.com points to a single IP number: 91.198.170.115.

Additional host names — perfectoldtimer.com, danielroser.com, klompmaker.com and two others — share IP numbers with mail.customsknowledge.com.

mail.customsknowledge.com - robtex.com