`mail.algebra21.de`

DNSSEC	⚠️ Not signed
A	213.221.108.182^{🇩🇪 CLARANET-AS213.221.64.0/18 CLARANET-DE 8196:1 8196:100}
		PTR	`leonardo.webstrategy.de`

`algebra21.de`

	DNSSEC	⚠️ Not signed
	A	213.221.108.182^{🇩🇪 CLARANET-AS213.221.64.0/18 CLARANET-DE 8196:1 8196:100}
	NS	`dns3.webstrategy.de` ⭐
	NS	`dns4.webstrategy.de`
	MX	`mail.algebra21.de` ⭐
	SOA	`dns3.webstrategy.de`hostmaster@webstrategy.de 2024-12-03 #1

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DNS History

1 record (1 active, 0 former)

●A213.221.108.1822015-07-19 → 2026-03-29 · 2 obs

● 2015-07-19 04:33:48
● 2026-03-29 05:52:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
algebra21.de	dns3.webstrategy.de, dns4.webstrategy.de	4 records

✅ Authoritative Response

Server:176.97.158.13

NS records: dns3.webstrategy.de, dns4.webstrategy.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for algebra21.de (unsigned zone)

⏱️ Timing

Total: 536ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.221.108.182`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns3.webstrategy.de, dns4.webstrategy.de, dns3.webstrategy.de...)

Analysis

Mail Server Role

mail.algebra21.de functions as a mail server for algebra21.de.

IP Addresses

mail.algebra21.de points to IP number: 213.221.108.182.

Other host names such as bjko.de, leonardo.webstrategy.de, xn--wiederhren-kcb.de, mail.algebra21.net and algebra21.net share IPs with mail.algebra21.de.

mail.algebra21.de - robtex.com