`mail.jacobi-server.de`

DNSSEC	⚠️ Not signed
A	213.241.163.222^{🇩🇪 OSN213.241.128.0/18 -NET}
		PTR	`mail.jacobi-server.de`

`jacobi-server.de`

	DNSSEC	⚠️ Not signed
	A	213.241.163.222^{🇩🇪 OSN213.241.128.0/18 -NET}
	NS	`dns.osn.de` ⭐
	NS	`dns.osn.net`
	NS	`dns.osn.org`
	MX	`mail.jacobi-server.de` ⭐
	TXT	`v=spf1 include:jacobi.to ~all`
	SOA	`dns.osn.de`root@osn.de serial=1764757320

PTR for

222.163.241.213.in-addr.arpa

MX for

jacobi-server.de

Same first word

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DNS History

1 record (1 active, 0 former)

●A213.241.163.2222020-04-14 → 2026-07-30 · 2 obs

● 2020-04-14 01:24:16
● 2026-07-30 11:16:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
jacobi-server.de	dns.osn.org, dns.osn.de, dns.osn.net	1 record

✅ Authoritative Response

Server:213.241.148.43

NS records: dns.osn.org, dns.osn.de, dns.osn.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jacobi-server.de (unsigned zone)

⏱️ Timing

Total: 3980ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.241.163.222`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (dns.osn.de)

Analysis

Mail Server Role

jacobi-server.de uses mail.jacobi-server.de as a mail server.

IP Addresses

mail.jacobi-server.de resolves to one IP address: 213.241.163.222.

jacobi-server.de is an example of another host name that shares IP numbers with mail.jacobi-server.de.

mail.jacobi-server.de - robtex.com