`api.ptopen-online.de`

DNSSEC	⚠️ Not signed
A	129.247.247.117^{🇩🇪 DFN129.247.0.0/16 DLR}
		PTR	`bof-portal.de`
		PTR	`bofplus-portal.de`
		PTR	`bop-portal.de`
		PTR	`ptopen-online.de`
		PTR	`pt-expert.eu`
		PTR	`pt-open.eu`
		PTR	`ptopen.eu`
		PTR	`www.bof-portal.de`
		PTR	`www.bofplus-portal.de`
		PTR	`www.bop-portal.de`
		PTR	`bfn-profi.dlr-pt.de`
		PTR	`ble-profi.dlr-pt.de`
		PTR	`api.ptopen-online.de`
		PTR	`www.pt-expert.eu`
		PTR	`www.pt-open.eu`
		PTR	`www.ptopen.eu`

`ptopen-online.de`

	DNSSEC	⚠️ Not signed
	A	129.247.247.117^{🇩🇪 DFN129.247.0.0/16 DLR}
	NS	`ns3.dlr.de` ⭐
	NS	`ns3.knipp.de`
	NS	`ns4.dlr.de`
	SOA	`ns3.dlr.de`dnsmaster@dlr.de serial=8

PTR for

117.247.247.129.in-addr.arpa

Same first word

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DNS History

1 record (1 active, 0 former)

●A129.247.247.1172026-02-14 → 2026-03-27 · 2 obs

● 2026-02-14 21:21:30
● 2026-03-27 15:37:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
ptopen-online.de	ns3.dlr.de, ns3.knipp.de, ns4.dlr.de	2 records

✅ Authoritative Response

Server:195.253.113.3

NS records: ns3.dlr.de, ns3.knipp.de, ns4.dlr.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ptopen-online.de (unsigned zone)

⏱️ Timing

Total: 1030ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`129.247.247.117`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.dlr.de, ns4.dlr.de)

Analysis

IP Addresses

api.ptopen-online.de maps to IP address 129.247.247.117.

Other host names, for instance www.bof-portal.de, bofplus-portal.de, pt-expert.eu, ptopen-online.de and bof-portal.de share IP numbers with api.ptopen-online.de.

api.ptopen-online.de - robtex.com