`centralesupelec.com`

DNSSEC	⚠️ Not signed
A	51.75.23.42^{🇸🇦 OVH51.75.0.0/16}
		PTR	`42.ip-51-75-23.eu`
NS	`ns1-metz.centralesupelec.fr` ⭐
		A	193.48.224.3^{🇫🇷 FR-RENATER193.48.0.0/14 RENATER}
NS	`ns.centralesupelec.fr`
		A	138.195.193.12^{🇫🇷 FR-RENATER138.195.0.0/16 FR-ECP FRANCE}
			PTR	`ns1-saclay.centralesupelec.fr`
		A	193.48.224.3^{🇫🇷 FR-RENATER193.48.0.0/14 RENATER}
		A	193.54.192.54^{🇫🇷 FR-RENATER193.54.0.0/15 RENATER FRANCE}
			PTR	`ns1-rennes.centralesupelec.fr`
NS	`ns1-rennes.centralesupelec.fr`
		A	193.54.192.54^{🇫🇷 FR-RENATER193.54.0.0/15 RENATER FRANCE}
			PTR	`ns1-rennes.centralesupelec.fr`
NS	`ns1-saclay.centralesupelec.fr`
		A	138.195.193.12^{🇫🇷 FR-RENATER138.195.0.0/16 FR-ECP FRANCE}
			PTR	`ns1-saclay.centralesupelec.fr`
MX	`mail.supelec.fr` ⭐
		A	138.195.193.80^{🇫🇷 FR-RENATER138.195.0.0/16 FR-ECP FRANCE}
			PTR	`mail.supelec.fr`
TXT	`HARICA-EKXIKe09O1sX4ixHCA0`
TXT	`d365mktkey=KJLDyQtxM3rBmxS2LvrEwWpA23fgRsrWiDdir4zQV9Yx`
SOA	`ns.centralesupelec.fr`hostmaster@centralesupelec.fr 2026-03-16 #1

`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=1777121396

Same first word

centralesupelec.org

centralesupelec.fr

centralesupelec.net

centralesupelec.eu

centralesupelec.com

DNS History

9 records (6 active, 3 former)

○NSinfogif.supelec.fr2015-05-14 → 2019-04-05 · 4 obs

● 2015-05-14 07:35:58
● 2019-04-05 19:29:40
○ 2026-02-16 22:42:22
○ 2026-04-25 12:59:18

○NSns.centralesupelec.com2015-05-14 → 2019-04-05 · 4 obs

● 2015-05-14 07:35:58
● 2019-04-05 19:29:40
○ 2026-02-16 22:42:22
○ 2026-04-25 12:59:18

●NSns.centralesupelec.fr2026-02-16 → 2026-04-25 · 3 obs

○ 2019-04-05 19:29:40
● 2026-02-16 22:42:22
● 2026-04-25 12:59:18

●NSns1-metz.centralesupelec.fr2026-02-16 → 2026-04-25 · 3 obs

○ 2019-04-05 19:29:40
● 2026-02-16 22:42:22
● 2026-04-25 12:59:18

●NSns1-rennes.centralesupelec.fr2026-02-16 → 2026-04-25 · 3 obs

○ 2019-04-05 19:29:40
● 2026-02-16 22:42:22
● 2026-04-25 12:59:18

●NSns1-saclay.centralesupelec.fr2026-02-16 → 2026-04-25 · 3 obs

○ 2019-04-05 19:29:40
● 2026-02-16 22:42:22
● 2026-04-25 12:59:18

○NSsupelec.supelec.fr2015-05-14 → 2019-04-05 · 4 obs

● 2015-05-14 07:35:58
● 2019-04-05 19:29:40
○ 2026-02-16 22:42:22
○ 2026-04-25 12:59:18

●MXmail.supelec.fr2015-05-14 → 2026-04-25 · 2 obs

● 2015-05-14 07:35:58
● 2026-04-25 12:59:18

●A51.75.23.422026-02-16 → 2026-04-25 · 2 obs

● 2026-02-16 22:42:22
● 2026-04-25 12:59:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
centralesupelec.com	ns1-saclay.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-metz.centralesupelec.fr	-

✅ Authoritative Response

Server:193.54.192.54

NS records: ns1-saclay.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-metz.centralesupelec.fr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centralesupelec.com (unsigned zone)

⏱️ Timing

Total: 674ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.75.23.42`
NS	3	`ns1-saclay.centralesupelec.fr, ns1-rennes.centralesupelec.fr...`
MX	1	`mail.supelec.fr (pri: 10)`
TXT	2	`HARICA-EKXIKe09O1sX4ixHCA0, d365mktkey=KJLDyQtxM3rBmxS2LvrEwWpA23fgR`
SOA	1	`ns.centralesupelec.fr hostmaster.central`

Analysis

IP Addresses

centralesupelec.com points to a single IP address: 51.75.23.42.

Other host names such as www.concours-centrale-supelec.fr, www.centralesupelec.fr, research.centralesupelec.fr, 42.ip-51-75-23.eu and ikpo.asso.fr share IP numbers with centralesupelec.com.

Name Servers

centralesupelec.com is delegated to four name servers: ns1-metz.centralesupelec.fr, ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr and ns.centralesupelec.fr.

At least part of the name servers for centralesupelec.com are shared with other domains, for instance l2s.centralesupelec.fr, 193.54.193.in-addr.arpa, sio.ecp.fr, concours-centrale-supelec.fr and 3.195.138.in-addr.arpa.

these name servers are commonly used with the name servers ns-master.centralesupelec.fr, piston.ecp.fr, ns.laissus.fr, soleil.uvsq.fr, ns.sio.ecp.fr, ns.l2s.centralesupelec.fr, dns.rezo-rm.fr, ns.l2s.supelec.fr, ns.lss.supelec.fr and ns.lrmh.fr.

Host names with three IPs:

ns.centralesupelec.fr maps to 138.195.193.12, 193.48.224.3 and 193.54.192.54.

Host names with one IP:

ns1-metz.centralesupelec.fr maps to 193.48.224.3.

ns1-rennes.centralesupelec.fr maps to 193.54.192.54.

ns1-saclay.centralesupelec.fr maps to 138.195.193.12.

Names that point to 138.195.193.12: ns.centralesupelec.fr and ns1-saclay.centralesupelec.fr.

Names that point to 193.48.224.3: ns.centralesupelec.fr and ns1-metz.centralesupelec.fr.

Names that point to 193.54.192.54: ns.centralesupelec.fr and ns1-rennes.centralesupelec.fr.

Mail Servers

The mail server for centralesupelec.com is mail.supelec.fr.

centralesupelec.com uses the same mail server setup as other domains, for example centralesupelec.net, centralesupelec.eu and centralesupelec.org.

Host mail.supelec.fr points to IP 138.195.193.80.

centralesupelec.com - robtex.com