`mail.pdftobook.ch`

DNSSEC	⚠️ Not signed
A	116.203.14.108^{🇩🇪 Hetzner116.203.0.0/16 HETZNER-DC}
		PTR	`vhost.vm.bubu.ch`

`pdftobook.ch`

	DNSSEC	⚠️ Not signed
	A	116.203.14.108^{🇩🇪 Hetzner116.203.0.0/16 HETZNER-DC}
	NS	`ns1.first-ns.de` ⭐
	NS	`robotns2.second-ns.de`
	NS	`robotns3.second-ns.com`
	SOA	`ns1.first-ns.de`dns@hetzner.com 2025-11-17 #0

Previously MX for

pdftobook.ch

Same first word

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mail.edu.ee

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mail.k12.vt.us

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DNS History

2 records (1 active, 1 former)

●A116.203.14.1082026-02-25 → 2026-04-11 · 3 obs

○ 2016-04-11 13:45:38
● 2026-02-25 10:33:38
● 2026-04-11 22:23:58

○A213.133.127.2072015-06-20 → 2016-04-11 · 4 obs

● 2015-06-20 10:18:48
● 2016-04-11 13:45:38
○ 2026-02-25 10:33:38
○ 2026-04-11 22:23:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	a.nic.ch, b.nic.ch, d.nic.ch, e.nic.ch...	-
pdftobook.ch	robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de	-

✅ Authoritative Response

Server:213.133.100.103

NS records: robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pdftobook.ch (unsigned zone)

⏱️ Timing

Total: 1591ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`116.203.14.108`

Analysis

IP Addresses

mail.pdftobook.ch points to a single IP address: 116.203.14.108.

Other host names such as pdftobook.ch, vhost.vm.bubu.ch, pdf2book.ch and www.pdf2book.ch share IP numbers with mail.pdftobook.ch.

mail.pdftobook.ch - robtex.com