`polytech-grenoble.net`

DNSSEC	⚠️ Not signed
A	37.187.154.190^{🇫🇷 OVH37.187.0.0/16}
		PTR	`siu1.polytech-reseau.org`
NS	`ns321257.ip-37-187-154.eu` ⭐
		A	37.187.154.190^{🇫🇷 OVH37.187.0.0/16}
			PTR	`siu1.polytech-reseau.org`
NS	`ns335557.ip-176-31-229.eu`
		A	176.31.229.169^{🇫🇷 OVH176.31.0.0/16 ISP Paris, France}
			PTR	`siu2.polytech-reseau.org`
MX	`ns321257.ip-37-187-154.eu` ⭐
		A	37.187.154.190^{🇫🇷 OVH37.187.0.0/16}
			PTR	`siu1.polytech-reseau.org`
TXT	`v=spf1 mx ip4:37.187.154.190 ip4:176.31.229.169 ip6:2001:41d0:2:f6a9:: ip6:20...`
SOA	`ns321257.ip-37-187-154.eu`postmaster@polytech-reseau.org 2024-12-13 #1

`net`

	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=1774376897

Same first word

polytech-grenoble.fr

polytech-grenoble.net

DNS History

9 records (4 active, 5 former)

○NSalbanie.ilot.org2007-10-17 → 2017-03-27 · 4 obs

● 2007-10-17 04:28:34
● 2017-03-27 11:49:38
○ 2020-02-27 01:38:06
○ 2026-03-24 18:53:16

○NSbeuvry.escaut.net2015-07-25 → 2017-03-27 · 5 obs

○ 2007-10-17 04:28:34
● 2015-07-25 15:41:40
● 2017-03-27 11:49:38
○ 2020-02-27 01:38:06
○ 2026-03-24 18:53:16

○NScalimero.authie.net2007-10-17 → 2017-03-27 · 4 obs

● 2007-10-17 04:28:34
● 2017-03-27 11:49:38
○ 2020-02-27 01:38:06
○ 2026-03-24 18:53:16

○NSdouaisis.escaut.net2007-10-17 → 2007-10-17 · 3 obs

● 2007-10-17 04:28:34
○ 2015-07-25 15:41:40
○ 2026-03-24 18:53:16

●NSns321257.ip-37-187-154.eu2020-02-27 → 2026-03-24 · 3 obs

○ 2017-03-27 11:49:38
● 2020-02-27 01:38:06
● 2026-03-24 18:53:16

●NSns335557.ip-176-31-229.eu2020-02-27 → 2026-03-24 · 3 obs

○ 2017-03-27 11:49:38
● 2020-02-27 01:38:06
● 2026-03-24 18:53:16

○MXdouaisis.escaut.net2007-10-17 → 2017-03-27 · 4 obs

● 2007-10-17 04:28:34
● 2017-03-27 11:49:38
○ 2020-02-27 01:38:06
○ 2026-03-24 18:53:16

●MXns321257.ip-37-187-154.eu2020-02-27 → 2026-03-24 · 3 obs

○ 2017-03-27 11:49:38
● 2020-02-27 01:38:06
● 2026-03-24 18:53:16

●A37.187.154.1902020-02-27 → 2026-03-24 · 2 obs

● 2020-02-27 01:38:06
● 2026-03-24 18:53:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	k.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net, f.gtld-servers.net...	-
polytech-grenoble.net	ns321257.ip-37-187-154.eu, ns335557.ip-176-31-229.eu	-

✅ Authoritative Response

Server:176.31.229.169

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.net (unsigned zone)

⏱️ Timing

Total: 585ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.187.154.190`
NS	2	`ns321257.ip-37-187-154.eu, ns335557.ip-176-31-229.eu`
MX	1	`ns321257.ip-37-187-154.eu (pri: 100)`
TXT	1	`v=spf1 mx ip4:37.187.154.190 ip4:176.31.`
SOA	1	`ns321257.ip-37-187-154.eu postmaster.pol`

Analysis

IP Addresses

polytech-grenoble.net resolves to a single IP address: 37.187.154.190.

Other host names including polytech-savoie.fr, polytech-orleans.fr, polytech-parisupmc.net, polytech-clermont.net and archimede-concours.org share IP numbers with polytech-grenoble.net.

Name Servers

polytech-grenoble.net's delegation uses two name servers, ns335557.ip-176-31-229.eu and ns321257.ip-37-187-154.eu.

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

polytech-grenoble.net at least partially shares name servers with other domains, including authie.net, escaut.net, 65.48.193.in-addr.arpa, yser.net and 64.48.193.in-addr.arpa.

these name servers are commonly used together with beuvry.escaut.net, calimero.authie.net and albanie.ilot.org.

Host names with a single IP:

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.net is handled by a single mail server, ns321257.ip-37-187-154.eu.

polytech-grenoble.net shares its mail server setup with other domains, including polytech-montpellier.net, archimede-groupe.org, polytech-savoie.fr, polytech-orleans.fr and polytech-parisupmc.net.

polytech-grenoble.net - robtex.com