`mail.preptoolkit.org`

DNSSEC	⚠️ Not signed
A	54.164.157.133^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
		PTR	`mail.preptoolkit.org`

`preptoolkit.org`

	DNSSEC	⚠️ Not signed
	NS	`ns-1429.awsdns-50.org` ⭐
	NS	`ns-1848.awsdns-39.co.uk`
	NS	`ns-2.awsdns-00.com`
	NS	`ns-759.awsdns-30.net`
	MX	`mail.demo.preptoolkit.org` ⭐
	TXT	`v=spf1 ip4:54.164.157.133 ip4:54.86.174.95 -all`
	SOA	`ns-1429.awsdns-50.org`awsdns-hostmaster@amazon.com serial=1

PTR for

133.157.164.54.in-addr.arpa

Previously MX for

preptoolkit.org

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

mail.cutegirl.jp

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mail.microsoft

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mail.cm

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mail.mil.cn

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mail.dnshome.de

mail.jp

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mail.glass

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mail.ge

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mail.run

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mail.edu.rs

mail.lt

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mail.uz

mail.clinic

mail.bm

mail.com.pk

mail.hl.cn

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mail.hotmail

mail.gov.om

mail.canon

mail.net.hk

mail.as

mail.ir

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mail.cz

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mail.so

mail.ind.in

mail.com.in

mail.noip.us

mail.hippy.jp

mail.eating-organic.net

mail.ba.gov.br

mail.com

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ilma.pl

mail.net.vn

mail.lib.wy.us

lami.com.au

mail.pictures

ilma.org

mail.gov.kg

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ilma.wpmudev.host

ilam.org.tr

almi.ru

liam.nu

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imal.org.mx

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amli.kommune.no

mlai.melbourne

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amil.cn

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lima.world

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DNS History

1 record (1 active, 0 former)

●A54.164.157.1332015-08-07 → 2026-03-29 · 2 obs

● 2015-08-07 10:41:24
● 2026-03-29 10:39:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
preptoolkit.org	ns-2.awsdns-00.com, ns-759.awsdns-30.net, ns-1429.awsdns-50.org, ns-1848.awsdns-39.co.uk	1 record

✅ Authoritative Response

Server:205.251.199.56

NS records: ns-2.awsdns-00.com, ns-759.awsdns-30.net, ns-1429.awsdns-50.org, ns-1848.awsdns-39.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for preptoolkit.org (unsigned zone)

⏱️ Timing

Total: 306ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`54.164.157.133`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-1429.awsdns-50.org)

Analysis

IP Addresses

mail.preptoolkit.org points to a single IP number: 54.164.157.133.

Other host names, for instance mail.demo.preptoolkit.org, share IP numbers with mail.preptoolkit.org.

mail.preptoolkit.org - robtex.com