`centralesupelec.eu`

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-A8aVDmXMkWi5xpzZU1h`
TXT	`v=spf1 include:centralesupelec.fr ~all`
SOA	`ns.centralesupelec.fr`hostmaster@centralesupelec.fr 2026-03-16 #1

`eu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`si.dns.eu` ⭐
	NS	`be.dns.eu`
	NS	`w.dns.eu`
	NS	`x.dns.eu`
	NS	`y.dns.eu`
	SOA	`si.dns.eu`tech@eurid.eu serial=1123625395

Same first word

centralesupelec.org

centralesupelec.fr

centralesupelec.net

centralesupelec.eu

centralesupelec.com

DNS History

9 records (6 active, 3 former)

○NSinfogif.supelec.fr2015-08-11 → 2017-04-06 · 4 obs

● 2015-08-11 21:37:38
● 2017-04-06 20:36:54
○ 2026-04-04 02:28:20
○ 2026-04-26 02:31:20

○NSns.centralesupelec.eu2015-08-11 → 2017-04-06 · 4 obs

● 2015-08-11 21:37:38
● 2017-04-06 20:36:54
○ 2026-04-04 02:28:20
○ 2026-04-26 02:31:20

●NSns.centralesupelec.fr2026-04-04 → 2026-04-26 · 3 obs

○ 2017-04-06 20:36:54
● 2026-04-04 02:28:20
● 2026-04-26 02:31:20

●NSns1-metz.centralesupelec.fr2026-04-04 → 2026-04-26 · 3 obs

○ 2017-04-06 20:36:54
● 2026-04-04 02:28:20
● 2026-04-26 02:31:20

●NSns1-rennes.centralesupelec.fr2026-04-04 → 2026-04-26 · 3 obs

○ 2017-04-06 20:36:54
● 2026-04-04 02:28:20
● 2026-04-26 02:31:20

●NSns1-saclay.centralesupelec.fr2026-04-04 → 2026-04-26 · 3 obs

○ 2017-04-06 20:36:54
● 2026-04-04 02:28:20
● 2026-04-26 02:31:20

○NSsupelec.supelec.fr2015-08-11 → 2017-04-06 · 4 obs

● 2015-08-11 21:37:38
● 2017-04-06 20:36:54
○ 2026-04-04 02:28:20
○ 2026-04-26 02:31:20

●MXmail.supelec.fr2015-08-11 → 2026-04-26 · 2 obs

● 2015-08-11 21:37:38
● 2026-04-26 02:31:20

●A51.75.23.422026-04-04 → 2026-04-26 · 2 obs

● 2026-04-04 02:28:20
● 2026-04-26 02:31:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
eu	be.dns.eu, x.dns.eu, y.dns.eu, w.dns.eu...	-
centralesupelec.eu	ns1-metz.centralesupelec.fr, ns1-saclay.centralesupelec.fr, ns1-rennes.centralesupelec.fr	-

✅ Authoritative Response

Server:138.195.193.12

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for centralesupelec.eu (unsigned zone)

⏱️ Timing

Total: 920ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.75.23.42`
NS	3	`ns1-rennes.centralesupelec.fr, ns1-saclay.centralesupelec.fr...`
MX	1	`mail.supelec.fr (pri: 10)`
TXT	2	`HARICA-A8aVDmXMkWi5xpzZU1h, v=spf1 include:centralesupelec.fr ~all`
SOA	1	`ns.centralesupelec.fr hostmaster.central`

Analysis

IP Addresses

centralesupelec.eu resolves to one IP number: 51.75.23.42.

other host names including ikpo.asso.fr, centralesupelec.org, ikpo.fr, concours-centrale-supelec.fr and centralesupelec.fr share IP numbers with centralesupelec.eu.

Name Servers

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

centralesupelec.eu at least partially shares name servers with other domains, for instance metz.centralesupelec.fr, 195.138.in-addr.arpa, l2s.supelec.fr, lss.supelec.fr and 237.195.138.in-addr.arpa.

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

Host names with three IPs:

The host ns.centralesupelec.fr points to: 138.195.193.12, 193.48.224.3 and 193.54.192.54.

Host names with one IP:

The host ns1-metz.centralesupelec.fr points to: 193.48.224.3.

The host ns1-rennes.centralesupelec.fr points to: 193.54.192.54.

The host ns1-saclay.centralesupelec.fr points to: 138.195.193.12.

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

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

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

Mail Servers

centralesupelec.eu is handled by a single mail server, mail.supelec.fr.

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

mail.supelec.fr resolves to IP 138.195.193.80.

centralesupelec.eu - robtex.com