`opensourcemasterclass.com`

DNSSEC	⚠️ Not signed
A	217.70.184.55^{🇫🇷 GANDI-AS217.70.184.0/24 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net}
		PTR	`webredir.gandi.net`
NS	`ns1.gandi.net` ⭐
		A	2001:4b98:aaaa::2^{🇫🇷 GANDI-LIVEDNS2001:4b98:aaaa::/48 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-1-a.gandi.net`
		A	173.246.100.2^{🇺🇸 GANDI-LIVEDNS173.246.100.0/24 Gandi LiveDNS A}
			PTR	`ns-1-a.gandi.net`
NS	`ns-239-a.gandi.net`
		A	2001:4b98:aaaa::f0^{🇫🇷 GANDI-LIVEDNS2001:4b98:aaaa::/48 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-239-a.gandi.net`
		A	173.246.100.240^{🇺🇸 GANDI-LIVEDNS173.246.100.0/24 Gandi LiveDNS A}
			PTR	`ns-239-a.gandi.net`
NS	`ns-28-b.gandi.net`
		A	2001:4b98:aaab::1d^{🇫🇷 GANDI-LIVEDNS2001:4b98:aaab::/48 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net}
			PTR	`ns-28-b.gandi.net`
		A	213.167.230.29^{🇫🇷 GANDI-LIVEDNS213.167.230.0/24 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-28-b.gandi.net`
NS	`ns-6-c.gandi.net`
		A	2604:3400:aaac::7^{🇺🇸 GANDI-LIVEDNS2604:3400:aaac::/48 Gandi US Inc.}
			PTR	`ns-6-c.gandi.net`
		A	217.70.187.7^{🇫🇷 GANDI-LIVEDNS217.70.187.0/24 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-6-c.gandi.net`
MX	`spool.mail.gandi.net` ⭐
		A	2001:4b98:e00::1^{🇫🇷 GANDI-AS2001:4b98::/32 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net}
			PTR	`spool.mail.gandi.net`
		A	217.70.178.1^{🇫🇷 GANDI-AS217.70.176.0/20 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net}
			PTR	`spool.mail.gandi.net`
MX	`fb.mail.gandi.net`⁽⁵⁰⁾
		A	2001:4b98:dc4:8::215^{🇫🇷 GANDI-AS2001:4b98::/32 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net}
			PTR	`spool6.mail.gandi.net`
		A	2001:4b98:dc4:8::216^{🇫🇷 GANDI-AS2001:4b98::/32 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net}
			PTR	`spool7.mail.gandi.net`
		A	2001:4b98:dc4:8::217^{🇫🇷 GANDI-AS2001:4b98::/32 GANDI is an ICANN accredited registrar GANDI is a virtual server provider for more information: Web: http://www.gandi.net}
			PTR	`spool8.mail.gandi.net`
		A	217.70.178.215^{🇫🇷 GANDI-AS217.70.176.0/20 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net}
			PTR	`spool6.mail.gandi.net`
		A	217.70.178.216^{🇫🇷 GANDI-AS217.70.176.0/20 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net}
			PTR	`spool7.mail.gandi.net`
		A	217.70.178.217^{🇫🇷 GANDI-AS217.70.176.0/20 GANDI is an ICANN accredited registrar for more information: Web: http://www.gandi.net}
			PTR	`spool8.mail.gandi.net`
TXT	`v=spf1 include:_mailcust.gandi.net ?all`
SOA	`ns1.gandi.net`hostmaster@gandi.net serial=1775088000

`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=1784126407

Same first word

opensourcemasterclass.com

DNS History

7 records (7 active, 0 former)

●NSns-239-a.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●NSns-28-b.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●NSns-6-c.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●NSns1.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●MXfb.mail.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●MXspool.mail.gandi.net2026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

●A217.70.184.552026-03-20 → 2026-07-15 · 2 obs

● 2026-03-20 06:56:12
● 2026-07-15 15:04:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
opensourcemasterclass.com	ns-239-a.gandi.net, ns-28-b.gandi.net, ns-6-c.gandi.net	-

✅ Authoritative Response

Server:173.246.100.240

NS records: ns-239-a.gandi.net, ns-28-b.gandi.net, ns-6-c.gandi.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opensourcemasterclass.com (unsigned zone)

⏱️ Timing

Total: 4238ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.70.184.55`
NS	3	`ns-239-a.gandi.net, ns-6-c.gandi.net...`
MX	2	`spool.mail.gandi.net (pri: 10), fb.mail.gandi.net (pri: 50)`
TXT	1	`v=spf1 include:_mailcust.gandi.net ?all`
SOA	1	`ns1.gandi.net hostmaster.gandi.net`

Analysis

IP Addresses

opensourcemasterclass.com resolves to one IP address: 217.70.184.55.

la-sportive-outdoor.com, ifmt-grenoble.com, bardoline.eu and two other host names share IP numbers with opensourcemasterclass.com.

Name Servers

The authoritative name servers for opensourcemasterclass.com are ns-239-a.gandi.net, ns-28-b.gandi.net, ns-6-c.gandi.net and ns1.gandi.net.

opensourcemasterclass.com has at least partial name server overlap with other domains, such as be-cet.fr, lesprofessionnelsdugaz.com, foamshop.at and two others.

These name servers tend to appear together with the name servers ns-202-b.gandi.net, ns-128-a.gandi.net and ns-156-c.gandi.net.

ns-239-a.gandi.net, ns-28-b.gandi.net, ns-6-c.gandi.net and ns1.gandi.net all point to exactly two IP numbers each: ns-239-a.gandi.net → 173.246.100.240 and 2001:4b98:aaaa::f0; ns-28-b.gandi.net → 213.167.230.29 and 2001:4b98:aaab::1d; ns-6-c.gandi.net → 217.70.187.7 and 2604:3400:aaac::7; ns1.gandi.net → 173.246.100.2 and 2001:4b98:aaaa::2.

Mail Servers

Mail for opensourcemasterclass.com is handled by two mail servers — fb.mail.gandi.net and spool.mail.gandi.net.

opensourcemasterclass.com uses an identical mail server configuration to several other domains — among them absr.be, easylease.me, ventealapropriete.name and two more.

opensourcemasterclass.com has mail servers in common with other domains — for example c2p.be and qualitree.net.

Hostnames that resolve to 6 IP addresses:

fb.mail.gandi.net resolves to 217.70.178.215, 217.70.178.216, 217.70.178.217 and 3 other IP addresses.

Hostnames that resolve to two IP addresses:

spool.mail.gandi.net points to 217.70.178.1 and 2001:4b98:e00::1.

opensourcemasterclass.com - robtex.com