`mail.cls.fr`

CNAME	`smtp.cls.fr`
DNSSEC	⚠️ Not signed
A	91.207.20.143^{🇫🇷 CLS-ARGOS-AS91.207.20.0/23}
		PTR	`smtp.cls.fr`

`cls.fr`

	DNSSEC	⚠️ Not signed
	A	91.207.20.235^{🇫🇷 CLS-ARGOS-AS91.207.20.0/23}
	NS	`hermes2.cls.fr` ⭐
	NS	`hermes.cls.fr`
	NS	`ns6.gandi.net`
	MX	`cls-fr.mail.protection.outlook.com` ⭐
	TXT	`hydrones-dataviewer=71b4b99f19dde4284cb7fbca8a86f76f`
	TXT	`ZOOM_verify_RWq0u149S1aZl9OaBpj1cQ`
	TXT	`ApzN/mCdC9dTw07NcuatJ4w/KkLWqcQXOZcDoa39NA09KAr2v0+18MNY9862S5srsKe/ie5abjQM/...`
	TXT	`aguvevoq6o6vikd54v84jqn5j9`
	TXT	`MS=ms41546692`
	TXT	`v=spf1 mx ip4:91.207.20.141 ip4:91.207.20.142 ip4:91.207.20.143 ip4:91.207.20...`
	TXT	`google-site-verification=xvqA-I021uI5GTzYJ05eO5jDzbj_UiASsTIOh3_cWsM`
	TXT	`hydrones=e70e2f99ac2933bfdf5b94f41c94e5e2`
	SOA	`hermes.cls.fr`postmaster@cls.fr 2026-07-16 #4

rank #232623 globally
rank #3192 in the tld
📈 Tranco rank: #195,413

MX for

cls.cnes.fr

Previously MX for

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mail.space

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mail.community

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mail.site

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mail.dating

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mail.nr

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mail.bio

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mail.tel

mail.ws

mail.holiday

mail.zombie.jp

mail.ma

mail.mr

mail.gov.af

mail.hashbang.sh

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mail.schwarz

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DNS History

2 records (1 active, 1 former)

○A91.207.20.1432015-09-02 → 2017-01-03 · 4 obs

● 2015-09-02 15:58:46
● 2017-01-03 16:01:20
○ 2017-09-16 10:39:48
○ 2026-08-09 14:26:20

●CNAMEsmtp.cls.fr2015-09-02 → 2026-08-09 · 2 obs

● 2015-09-02 15:58:46
● 2026-08-09 14:26:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fr	f.ext.nic.fr, d.nic.fr, g.ext.nic.fr	-
cls.fr	hermes2.cls.fr, ns6.gandi.net, hermes.cls.fr	2 records

✅ Authoritative Response

Server:91.207.20.1

NS records: hermes2.cls.fr, ns6.gandi.net, hermes.cls.fr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cls.fr (unsigned zone)

⏱️ Timing

Total: 801ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`smtp.cls.fr`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (hermes.cls.fr, hermes2.cls.fr)

Analysis

Mail Server Role

cls.cnes.fr uses mail.cls.fr as a mail server.

IP Addresses

mail.cls.fr resolves to one IP address: 91.207.20.143.

smtp.cls.fr, for instance, is one of the other host names sharing IP numbers with mail.cls.fr.

mail.cls.fr - robtex.com

mail.cls.fr

cls.fr