`mail.polbuch.de`

CNAME	`poczta.selly.pl`
DNSSEC	⚠️ Not signed
A	31.186.83.203^{🇵🇱 ECO-ATMAN-PL31.186.80.0/21}
		PTR	`poczta.selly.pl`

`polbuch.de`

	DNSSEC	⚠️ Not signed
	A	212.91.26.121^{🇵🇱 ECO-ATMAN-PL212.91.26.0/24 EcoSerwers}
	NS	`dns1.selly.pl` ⭐
	NS	`dns2.selly.pl`
	MX	`mx.spamexperts.com` ⭐
	MX	`fallbackmx.spamexperts.eu`⁽²⁰⁾
	MX	`lastmx.spamexperts.net`⁽³⁰⁾
	TXT	`v=spf1 a mx include:_spf.selly.pl ~all`
	SOA	`dns1.selly.pl`admin@selly@pl 2025-11-06 #0

Previously MX for

polbuch.de

Same first word

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mail.si

mail.gov.rw

mail.gov.bs

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mail.gov.cn

mail.staba.jp

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mail.in.th

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DNS History

2 records (1 active, 1 former)

●CNAMEpoczta.selly.pl2026-05-13 → 2026-05-13 · 3 obs

○ 2017-12-02 21:55:10
● 2026-05-13 01:10:50
● 2026-05-13 01:10:52

○CNAMEpolbuch.de2017-12-02 → 2017-12-02 · 3 obs

● 2017-12-02 21:55:10
○ 2026-05-13 01:10:50
○ 2026-05-13 01:10:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	l.de.net, z.nic.de, s.de.net, f.nic.de...	-
polbuch.de	dns1.selly.pl, dns2.selly.pl	-

✅ Authoritative Response

Server:128.204.218.136

NS records: dns1.selly.pl, dns2.selly.pl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for polbuch.de (unsigned zone)

⏱️ Timing

Total: 1772ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`poczta.selly.pl`

Analysis

IP Addresses

mail.polbuch.de points to a single IP number: 31.186.83.203.

Other host names, for instance poczta.selly.pl, share IP numbers with mail.polbuch.de.

mail.polbuch.de - robtex.com

mail.polbuch.de

polbuch.de