`cesi-alternance.com`

DNSSEC	⚠️ Not signed
A	80.80.228.253^{🇨🇭 SAFEHOSTNET80.80.224.0/21 CH-SAFEHOST}
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-186-a.gandi.net`
		A	2001:4b98:aaaa::bb^{🇫🇷 GANDI-LIVEDNS2001:4b98:aaaa::/48 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-186-a.gandi.net`
		A	173.246.100.187^{🇺🇸 GANDI-LIVEDNS173.246.100.0/24 Gandi LiveDNS A}
			PTR	`ns-186-a.gandi.net`
NS	`ns-27-c.gandi.net`
		A	2604:3400:aaac::1c^{🇺🇸 GANDI-LIVEDNS2604:3400:aaac::/48 Gandi US Inc.}
			PTR	`ns-27-c.gandi.net`
		A	217.70.187.28^{🇫🇷 GANDI-LIVEDNS217.70.187.0/24 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-27-c.gandi.net`
NS	`ns-57-b.gandi.net`
		A	2001:4b98:aaab::3a^{🇫🇷 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-57-b.gandi.net`
		A	213.167.230.58^{🇫🇷 GANDI-LIVEDNS213.167.230.0/24 GANDI is an ICANN accredited registrar and Cloud services provider}
			PTR	`ns-57-b.gandi.net`
MX	`mail.cesi-alternance.com` ⭐
		A	80.80.228.54^{🇨🇭 SAFEHOSTNET80.80.224.0/21 CH-SAFEHOST}
			PTR	`mail.net4all.ch`
TXT	`v=spf1 ip4:80.80.228.41 ip4:80.80.228.43 ip4:80.80.228.56 ip4:80.80.228.81 ip...`
SOA	`ns1.gandi.net`hostmaster@gandi.net serial=1776902400

`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=1777243041

Subdomains

mail.cesi-alternance.com

Same first word

cesi-alternance.com

DNS History

8 records (6 active, 2 former)

●NSns-186-a.gandi.net2026-03-04 → 2026-04-26 · 3 obs

○ 2020-04-06 18:00:34
● 2026-03-04 06:50:20
● 2026-04-26 22:47:28

●NSns-27-c.gandi.net2026-03-04 → 2026-04-26 · 3 obs

○ 2020-04-06 18:00:34
● 2026-03-04 06:50:20
● 2026-04-26 22:47:28

●NSns-57-b.gandi.net2026-03-04 → 2026-04-26 · 3 obs

○ 2020-04-06 18:00:34
● 2026-03-04 06:50:20
● 2026-04-26 22:47:28

○NSns.net4all-dns.com2015-04-16 → 2020-04-06 · 4 obs

● 2015-04-16 16:50:42
● 2020-04-06 18:00:34
○ 2026-03-04 06:50:20
○ 2026-04-26 22:47:28

●NSns1.gandi.net2026-03-04 → 2026-04-26 · 3 obs

○ 2020-04-06 18:00:34
● 2026-03-04 06:50:20
● 2026-04-26 22:47:28

○NSns2.net4all-dns.com2015-04-16 → 2020-04-06 · 4 obs

● 2015-04-16 16:50:42
● 2020-04-06 18:00:34
○ 2026-03-04 06:50:20
○ 2026-04-26 22:47:28

●MXmail.cesi-alternance.com2015-04-16 → 2026-04-26 · 2 obs

● 2015-04-16 16:50:42
● 2026-04-26 22:47:28

●A80.80.228.2532015-04-16 → 2026-04-26 · 2 obs

● 2015-04-16 16:50:42
● 2026-04-26 22:47:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cesi-alternance.com	ns-186-a.gandi.net, ns-57-b.gandi.net, ns-27-c.gandi.net	-

✅ Authoritative Response

Server:173.246.100.187

NS records: ns-186-a.gandi.net, ns-57-b.gandi.net, ns-27-c.gandi.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cesi-alternance.com (unsigned zone)

⏱️ Timing

Total: 800ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`80.80.228.253`
NS	3	`ns-186-a.gandi.net, ns-27-c.gandi.net...`
MX	1	`mail.cesi-alternance.com (pri: 10)`
TXT	1	`v=spf1 ip4:80.80.228.41 ip4:80.80.228.43`
SOA	1	`ns1.gandi.net hostmaster.gandi.net`

Analysis

Hierarchy

cesi-alternance.com is the parent of mail.cesi-alternance.com.

IP Addresses

cesi-alternance.com points to a single IP number: 80.80.228.253.

other host names for instance cesialumni.eu, www.dhoc.ch, cameleonsbags.com, mygbox.fr and fidunet.ch share IP numbers with cesi-alternance.com.

Name Servers

cesi-alternance.com is delegated to four name servers: ns-186-a.gandi.net, ns-27-c.gandi.net, ns-57-b.gandi.net and ns1.gandi.net.

cesi-alternance.com at least partially shares name servers with other domains, for instance onesky.fr, dellight.com, jelify.com, poisot.net and hydrescale.com.