`tedxopenuniversiteitheerlen.nl`

DNSSEC	⚠️ Not signed
A	134.209.138.19^{🇳🇱 DIGITALOCEAN134.209.136.0/22 DigitalOcean}
NS	`app-hrl-014-lan1.pwo.ou.nl` ⭐
		A	2001:610:338:1030::126:14^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`app-hrl-014-lan1.ou.nl`
			PTR	`app-hrl-014-lan1.pwo.ou.nl`
		A	145.20.126.14^{🇳🇱 SURFNET-NL145.20.0.0/16 OUH-NL}
			PTR	`app-hrl-014-lan1.ou.nl`
			PTR	`dns.ou.nl`
			PTR	`app-hrl-014-lan1.pwo.ou.nl`
NS	`dns.ou.nl` ⚠️ Not in zone NS records
		A	2001:610:338:1030::126:14^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`app-hrl-014-lan1.ou.nl`
			PTR	`app-hrl-014-lan1.pwo.ou.nl`
		A	145.20.126.14^{🇳🇱 SURFNET-NL145.20.0.0/16 OUH-NL}
			PTR	`app-hrl-014-lan1.ou.nl`
			PTR	`dns.ou.nl`
			PTR	`app-hrl-014-lan1.pwo.ou.nl`
NS	`dns2.ou.nl` ⚠️ Not in zone NS records
		A	2001:610:338:1030::126:15^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`app-hsz-002-lan1.ou.nl`
			PTR	`dns2.ou.nl`
		A	145.20.126.15^{🇳🇱 SURFNET-NL145.20.0.0/16 OUH-NL}
			PTR	`app-hsz-002-lan1.ou.nl`
			PTR	`dns2.ou.nl`
NS	`ns.ou.nl`
		A	2001:610:338:1030::126:12^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
		A	145.20.126.12^{🇳🇱 SURFNET-NL145.20.0.0/16 OUH-NL}
			PTR	`aix-4.ou.nl`
			PTR	`dns.ou.nl`
			PTR	`dsa.ou.nl`
			PTR	`lnx-hrl-042v.ou.nl`
			PTR	`mailgw1.ou.nl`
			PTR	`mailserv.ou.nl`
			PTR	`ns.ou.nl`
			PTR	`ntp0.ou.nl`
			PTR	`ouhi06.ou.nl`
			PTR	`relay.ou.nl`
NS	`ns2.ou.nl`
		A	2001:610:338:1030::126:13^{🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block}
			PTR	`lnx-hrl-041v.ou.nl`
			PTR	`mailgw2.ou.nl`
			PTR	`mailserv2.ou.nl`
			PTR	`ns2.ou.nl`
		A	145.20.126.13^{🇳🇱 SURFNET-NL145.20.0.0/16 OUH-NL}
			PTR	`lnx-hrl-041v.ou.nl`
			PTR	`mailgw2.ou.nl`
			PTR	`mailserv2.ou.nl`
			PTR	`ns2.ou.nl`
SOA	`app-hrl-014-lan1.pwo.ou.nl`hostmaster@ou.nl serial=7

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-04-27 20:00:01 +0000 (EPOCH 1777320001)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-04-27 #40

PTR for

61.188.20.145.in-addr.arpa

Same first word

tedxopenuniversiteitheerlen.nl

DNS History

6 records (6 active, 0 former)

●NSapp-hrl-014-lan1.pwo.ou.nl2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

●NSdns.ou.nl2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

●NSdns2.ou.nl2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

●NSns.ou.nl2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

●NSns2.ou.nl2026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

●A134.209.138.192026-03-24 → 2026-04-27 · 2 obs

● 2026-03-24 19:07:42
● 2026-04-27 20:46:28

🔍 DNS Trace

Analysis

IP Addresses

tedxopenuniversiteitheerlen.nl resolves to one IP number: 134.209.138.19.

Name Servers

tedxopenuniversiteitheerlen.nl is delegated to five name servers: dns2.ou.nl, dns.ou.nl, ns2.ou.nl, ns.ou.nl and app-hrl-014-lan1.pwo.ou.nl.

tedxopenuniversiteitheerlen.nl at least partially shares name servers with other domains, for instance open-u.be, ou-vlaanderen.be, netwerkopenhogeschool.com, openuniversiteit.eu and ojh.nl.