core42.com - dns.ninja

`core42.com`

DNSSEC	⚠️ Not signed
A	2a01:4f8:d0a:3351::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`www539.your-server.de`
A	188.40.3.218^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
NS	`hydrogen.ns.hetzner.com` ⭐
		A	2a01:4f8:0:1::add:1098^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`hydrogen.ns.hetzner.com`
		A	213.133.100.98^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`hydrogen.ns.hetzner.com`
NS	`helium.ns.hetzner.de`
		A	2001:67c:192c::add:5^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`helium.ns.hetzner.de`
		A	193.47.99.5^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`helium.ns.hetzner.de`
NS	`oxygen.ns.hetzner.com`
		A	2a01:4f8:0:1::add:2992^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`oxygen.ns.hetzner.com`
		A	88.198.229.192^{🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4}
			PTR	`oxygen.ns.hetzner.com`
MX	`www539.your-server.de` ⭐
		A	2a01:4f8:d0a:3351::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`www539.your-server.de`
		A	188.40.3.218^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
			PTR	`www539.your-server.de`
TXT	`v=spf1 a mx ~all`
SOA	`hydrogen.ns.hetzner.com`dns@hetzner.com 2026-04-17 #0

`com`

	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=1781542590

Same first word

core42.cloud

core42.de

core42.ai

core42.info

core42.com

Similar names

24core.com

24reco.com

core24.org

core24.eu

core24.com.au

core24.network

core24.com

42core.com

cero24.com

core24.de

DNS History

15 records (6 active, 9 former)

●NShelium.ns.hetzner.de2026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

●NShydrogen.ns.hetzner.com2026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

○NSns.namespace4you.de2015-06-03 → 2017-10-22 · 4 obs

● 2015-06-03 01:41:12
● 2017-10-22 17:54:16
○ 2026-02-16 15:44:52
○ 2026-06-15 17:22:34

○NSns2.namespace4you.de2015-06-03 → 2017-10-22 · 4 obs

● 2015-06-03 01:41:12
● 2017-10-22 17:54:16
○ 2026-02-16 15:44:52
○ 2026-06-15 17:22:34

●NSoxygen.ns.hetzner.com2026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

○MXmxlb.ispgateway.de2015-06-03 → 2017-10-22 · 4 obs

● 2015-06-03 01:41:12
● 2017-10-22 17:54:16
○ 2026-02-16 15:44:52
○ 2026-06-15 17:22:34

●MXwww539.your-server.de2026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

○A134.119.19.572015-10-22 → 2016-03-31 · 5 obs

○ 2015-06-03 01:41:12
● 2015-10-22 05:20:22
● 2016-03-31 17:59:12
○ 2016-11-20 19:57:36
○ 2026-06-15 17:22:34

○A134.119.247.332016-11-20 → 2017-10-22 · 5 obs

○ 2016-03-31 17:59:12
● 2016-11-20 19:57:36
● 2017-10-22 17:54:16
○ 2026-02-16 15:44:52
○ 2026-06-15 17:22:34

●A188.40.3.2182026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

○A188.93.8.682015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 01:41:12
○ 2015-10-22 05:20:22
○ 2026-06-15 17:22:34

○A2a00:1158:0:404:f8c2::12015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 01:41:12
○ 2015-10-22 05:20:22
○ 2026-06-15 17:22:34

○A2a00:1158:0:407:6e4c::12015-10-22 → 2016-03-31 · 5 obs

○ 2015-06-03 01:41:12
● 2015-10-22 05:20:22
● 2016-03-31 17:59:12
○ 2016-11-20 19:57:36
○ 2026-06-15 17:22:34

○A2a00:1158:400:407::212016-11-20 → 2017-10-22 · 5 obs

○ 2016-03-31 17:59:12
● 2016-11-20 19:57:36
● 2017-10-22 17:54:16
○ 2026-02-16 15:44:52
○ 2026-06-15 17:22:34

●A2a01:4f8:d0a:3351::22026-02-16 → 2026-06-15 · 3 obs

○ 2017-10-22 17:54:16
● 2026-02-16 15:44:52
● 2026-06-15 17:22:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
core42.com	helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com	2 records

✅ Authoritative Response

Server:193.47.99.5

NS records: helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for core42.com (unsigned zone)

⏱️ Timing

Total: 3616ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`188.40.3.218`
AAAA	1	`2a01:4f8:d0a:3351::2`
NS	3	`oxygen.ns.hetzner.com, helium.ns.hetzner.de...`
MX	1	`www539.your-server.de (pri: 10)`
TXT	1	`v=spf1 a mx ~all`
SOA	1	`hydrogen.ns.hetzner.com dns.hetzner.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com)

Analysis

IP Addresses

core42.com has two IP addresses: 188.40.3.218 and 2a01:4f8:d0a:3351::2

Additional host names — hypnology.info, x-lam.be, mail.schern.us and two others — share IP numbers with core42.com.

Name Servers

The authoritative name servers for core42.com are hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de — three in total.

There is at least partial name server overlap between core42.com and other domains — thiagoalessio.com, netxsec.net, onlinespecialisten.dk and two more among them.

These name servers are routinely deployed together with the name servers ns1.first-ns.de.

hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de all resolve to exactly two IP numbers apiece: hydrogen.ns.hetzner.com → 213.133.100.98 and 2a01:4f8:0:1::add:1098; oxygen.ns.hetzner.com → 88.198.229.192 and 2a01:4f8:0:1::add:2992; helium.ns.hetzner.de → 193.47.99.5 and 2001:67c:192c::add:5.

Mail Servers

core42.com has one mail server: www539.your-server.de.

core42.com shares the same mail server setup as other domains, including arbeitsrechtsanwaeltin.eu, danielschoenen.de, mojomail.de and two others.

www539.your-server.de carries two IP numbers: 188.40.3.218 and 2a01:4f8:d0a:3351::2.