`polytech-grenoble.fr`

DNSSEC	⚠️ Not signed
A	195.220.30.60^{🇫🇷 FR-RENATER195.220.0.0/16}
		PTR	`magnolia.infra.grenoble-inp.fr`
NS	`ns321257.ip-37-187-154.eu` ⭐
		A	37.187.154.190^{OVH37.187.0.0/16}
NS	`ns335557.ip-176-31-229.eu`
		A	176.31.229.169^{OVH176.31.0.0/16 ISP Paris, France}
MX	`mx.listes.reseau-polytech.org` ⭐
		A	51.77.246.66
TXT	`v=spf1 mx ip4:176.31.229.169 mx:grenoble-inp.fr ip6:2001:41d0:2:f6a9:: ip6:20...`
SOA	`ns321257.ip-37-187-154.eu`postmaster@polytech-grenoble.fr 2026-02-12 #1

`fr`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.fr` ⭐ 🔒
	NS	`d.nic.fr` 🔒
	NS	`f.ext.nic.fr` 🔒
	NS	`g.ext.nic.fr` 🔒
	TXT	`34 RRs processed [03/03/2026 03H50:47]`
	SOA	`a.nic.fr`dnsmaster@afnic.fr serial=2244430463

WOT: SAFE (81/100)

Same first word

polytech-grenoble.fr

polytech-grenoble.net

DNS History

11 records (4 active, 7 former)

○NSalbanie.ilot.org2015-08-08 → 2017-02-13 · 4 obs

● 2015-08-08 13:32:48
● 2017-02-13 16:16:08
○ 2026-02-26 19:49:40
○ 2026-03-23 21:42:20

○NSbeuvry.escaut.net2015-08-08 → 2017-02-13 · 4 obs

● 2015-08-08 13:32:48
● 2017-02-13 16:16:08
○ 2026-02-26 19:49:40
○ 2026-03-23 21:42:20

○NScalimero.authie.net2015-08-08 → 2017-02-13 · 4 obs

● 2015-08-08 13:32:48
● 2017-02-13 16:16:08
○ 2026-02-26 19:49:40
○ 2026-03-23 21:42:20

●NSns321257.ip-37-187-154.eu2026-02-26 → 2026-03-23 · 3 obs

○ 2017-02-13 16:16:08
● 2026-02-26 19:49:40
● 2026-03-23 21:42:20

●NSns335557.ip-176-31-229.eu2026-02-26 → 2026-03-23 · 3 obs

○ 2017-02-13 16:16:08
● 2026-02-26 19:49:40
● 2026-03-23 21:42:20

○MXdouaisis.escaut.net2015-08-08 → 2015-08-08 · 3 obs

● 2015-08-08 13:32:48
○ 2015-11-26 05:25:06
○ 2026-03-23 21:42:20

●MXmx.listes.reseau-polytech.org2026-02-26 → 2026-03-23 · 3 obs

○ 2017-02-13 16:16:08
● 2026-02-26 19:49:40
● 2026-03-23 21:42:20

○MXns321257.ip-37-187-154.eu2015-11-26 → 2017-02-13 · 5 obs

○ 2015-08-08 13:32:48
● 2015-11-26 05:25:06
● 2017-02-13 16:16:08
○ 2026-02-26 19:49:40
○ 2026-03-23 21:42:20

○MXns335557.ip-176-31-229.eu2015-11-26 → 2017-02-13 · 5 obs

○ 2015-08-08 13:32:48
● 2015-11-26 05:25:06
● 2017-02-13 16:16:08
○ 2026-02-26 19:49:40
○ 2026-03-23 21:42:20

●A195.220.30.602026-02-26 → 2026-03-23 · 3 obs

○ 2016-06-21 19:14:46
● 2026-02-26 19:49:40
● 2026-03-23 21:42:20

○A37.187.154.1902015-11-26 → 2016-02-27 · 4 obs

● 2015-11-26 05:25:06
● 2016-02-27 23:49:16
○ 2016-06-21 19:14:46
○ 2026-03-23 21:42:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fr	f.ext.nic.fr, d.nic.fr, g.ext.nic.fr	-
polytech-grenoble.fr	ns321257.ip-37-187-154.eu, ns335557.ip-176-31-229.eu	-

✅ Authoritative Response

Server:37.187.154.190

NS records: ns321257.ip-37-187-154.eu, ns335557.ip-176-31-229.eu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for polytech-grenoble.fr (unsigned zone)

⏱️ Timing

Total: 1998ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`195.220.30.60`
NS	2	`ns321257.ip-37-187-154.eu, ns335557.ip-176-31-229.eu`
MX	1	`mx.listes.reseau-polytech.org (pri: 10)`
TXT	1	`v=spf1 mx ip4:176.31.229.169 mx:grenoble`
SOA	1	`ns321257.ip-37-187-154.eu postmaster.pol`

Analysis

IP Addresses

polytech-grenoble.fr resolves to one IP number: 195.220.30.60.

other host names including lcis.grenoble-inp.fr, ginp.eu, grenoble-inp.net, phelma.eu and pagora.org share IP numbers with polytech-grenoble.fr.

Name Servers

polytech-grenoble.fr is delegated to two name servers ns335557.ip-176-31-229.eu and ns321257.ip-37-187-154.eu.

polytech-grenoble.fr shares the same name server setup as other domains, for instance polytech-montpellier.fr, polytech-clermontferrand.fr, polytech-montpellier.net, archimede-groupe.org and polytech-savoie.fr.

polytech-grenoble.fr at least partially shares name servers with other domains, for instance yser.net, 64.48.193.in-addr.arpa, 57.48.193.in-addr.arpa, authie.net and escaut.net.

these name servers are often used together with beuvry.escaut.net, calimero.authie.net, albanie.ilot.org and buzz.polytech-lille.org.

Host names with one IP number:

ns335557.ip-176-31-229.eu points to 176.31.229.169

ns321257.ip-37-187-154.eu points to 37.187.154.190

Mail Servers

polytech-grenoble.fr is handled by a single mail server, mx.listes.reseau-polytech.org.

polytech-grenoble.fr shares the same mail server setup as other domains, for instance polytech-nantes.fr.

mx.listes.reseau-polytech.org resolves to IP 51.77.246.66.

polytech-grenoble.fr - robtex.com