`openaccessblog.net`

DNSSEC	⚠️ Not signed
NS	`ns00.hbz-nrw.de` ⭐
		A	193.30.112.100^{🇩🇪 DFN193.30.112.0/24 HBZNET}
			PTR	`ns00.hbz-nrw.de`
NS	`dns1.uni-koeln.de`
		A	2a00:a200:0:56::53^{🇩🇪 UNI-KOELN2a00:a200::/29}
			PTR	`ib-lfi-2.rrz.uni-koeln.de`
		A	134.95.44.35^{🇩🇪 UNI-KOELN134.95.0.0/16}
			PTR	`ib-lfi-2.rrz.uni-koeln.de`
NS	`nse03.hbz-nrw.de`
		A	193.30.112.3^{🇩🇪 DFN193.30.112.0/24 HBZNET}
			PTR	`nse03.hbz-nrw.de`
NS	`nse04.hbz-nrw.de`
		A	193.30.112.4^{🇩🇪 DFN193.30.112.0/24 HBZNET}
SOA	`ns00.hbz-nrw.de`unix@hbz-nrw.de 2021-03-19 #0

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774443707

Same first word

openaccessblog.org

openaccessblog.net

openaccessblog.com

DNS History

7 records (4 active, 3 former)

●NSdns1.uni-koeln.de2026-03-14 → 2026-03-25 · 3 obs

○ 2016-12-30 07:49:34
● 2026-03-14 14:21:46
● 2026-03-25 13:17:32

○NSkassandra.hbz-nrw.de2007-10-20 → 2007-10-20 · 3 obs

● 2007-10-20 07:03:36
○ 2015-08-10 11:59:50
○ 2026-03-25 13:17:32

○NSnoc2.rrz.uni-koeln.de2007-10-20 → 2016-12-30 · 4 obs

● 2007-10-20 07:03:36
● 2016-12-30 07:49:34
○ 2026-03-14 14:21:46
○ 2026-03-25 13:17:32

●NSns00.hbz-nrw.de2015-08-10 → 2026-03-25 · 3 obs

○ 2007-10-20 07:03:36
● 2015-08-10 11:59:50
● 2026-03-25 13:17:32

●NSnse03.hbz-nrw.de2015-08-10 → 2026-03-25 · 3 obs

○ 2007-10-20 07:03:36
● 2015-08-10 11:59:50
● 2026-03-25 13:17:32

●NSnse04.hbz-nrw.de2015-08-10 → 2026-03-25 · 3 obs

○ 2007-10-20 07:03:36
● 2015-08-10 11:59:50
● 2026-03-25 13:17:32

○NSplaton.hbz-nrw.de2007-10-20 → 2007-10-20 · 3 obs

● 2007-10-20 07:03:36
○ 2015-08-10 11:59:50
○ 2026-03-25 13:17:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
openaccessblog.net	nse03.hbz-nrw.de, nse04.hbz-nrw.de, dns1.uni-koeln.de	-

✅ Authoritative Response

Server:193.30.112.3

NS records: nse03.hbz-nrw.de, nse04.hbz-nrw.de, dns1.uni-koeln.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openaccessblog.net (unsigned zone)

⏱️ Timing

Total: 771ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`nse04.hbz-nrw.de, nse03.hbz-nrw.de...`
SOA	1	`ns00.hbz-nrw.de unix.hbz-nrw.de`

Analysis

Name Servers

openaccessblog.net is delegated to four name servers: ns00.hbz-nrw.de, nse03.hbz-nrw.de, nse04.hbz-nrw.de and dns1.uni-koeln.de.

openaccessblog.net shares some name servers with other domains, for example genetik.uni-bielefeld.de, 28.70.129.in-addr.arpa, digitalisiertedrucke.de, denbi.de and zeitenblicke.de.

These name servers are often used together with noc2.rrz.uni-koeln.de, ns1.uni-bielefeld.de, dns1.belwue.de, dns3.belwue.de, auth0.dns.cebitec.uni-bielefeld.de, auth0.dns.techfak.uni-bielefeld.de, ns1.physik.uni-bielefeld.de, ns2.physik.uni-bielefeld.de and waldorf.cs.uni-dortmund.de.

Host names with two IP numbers:

The host name dns1.uni-koeln.de points to 2a00:a200:0:56::53 and 134.95.44.35.

Host names with one IP number:

The host name ns00.hbz-nrw.de points to 193.30.112.100

The host name nse03.hbz-nrw.de points to 193.30.112.3

The host name nse04.hbz-nrw.de points to 193.30.112.4

openaccessblog.net - robtex.com