`mailproxy2.kobong.de`

CNAME	`host219.checkdomain.de`
DNSSEC	⚠️ Not signed
A	91.203.110.219^{🇩🇪 CLOUDPIT91.203.108.0/22}
		PTR	`host219.checkdomain.de`

`kobong.de`

	DNSSEC	⚠️ Not signed
	A	91.203.110.219^{🇩🇪 CLOUDPIT91.203.108.0/22}
	NS	`ns2.checkdomain.de` ⭐
	NS	`ns.checkdomain.de`
	MX	`mx03.secure-mailgate.com` ⭐
	MX	`mx04.secure-mailgate.com`⁽²⁰⁾
	TXT	`v=spf1 include:secure-mailgate.com ?all`
	SOA	`ns.checkdomain.de`hostmaster@checkdomain.de 2021-01-31 #1

Previously MX for

kobong.de

DNS History

3 records (1 active, 2 former)

○A188.40.69.762015-08-05 → 2015-11-21 · 4 obs

● 2015-08-05 00:33:58
● 2015-11-21 08:32:20
○ 2026-04-13 03:08:18
○ 2026-04-13 03:08:20

○A2a01:4f8:100:43a1:7a68:7dca:9fd8:eeac2015-08-05 → 2015-11-21 · 4 obs

● 2015-08-05 00:33:58
● 2015-11-21 08:32:20
○ 2026-04-13 03:08:18
○ 2026-04-13 03:08:20

●CNAMEhost219.checkdomain.de2026-04-13 → 2026-04-13 · 2 obs

● 2026-04-13 03:08:18
● 2026-04-13 03:08:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
kobong.de	ns.checkdomain.de, ns2.checkdomain.de	4 records

✅ Authoritative Response

Server:5.9.190.98

NS records: ns.checkdomain.de, ns2.checkdomain.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kobong.de (unsigned zone)

⏱️ Timing

Total: 796ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`host219.checkdomain.de`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns.checkdomain.de, ns.checkdomain.de, ns2.checkdomain.de...)

Analysis

IP Addresses

mailproxy2.kobong.de points to a single IP number: 91.203.110.219.

other host names for instance wimmenauer.de, agentur360grad.de, goodlink.de, zehic.de and david-m.org share IP numbers with mailproxy2.kobong.de.

mailproxy2.kobong.de - robtex.com