`certainement.fr`

DNSSEC	⚠️ Not signed
A	78.40.11.88^{🇫🇷 O2SWITCH78.40.8.0/22 o2switch Internet Routing}
NS	`ns1.o2switch.net` ⭐
		A	109.234.160.5^{🇫🇷 O2SWITCH109.234.160.0/24 o2switch Internet Routing}
			PTR	`ns1.o2switch.net`
NS	`ns2.o2switch.net`
		A	109.234.161.5^{🇫🇷 O2SWITCH109.234.161.0/24 o2switch Internet Routing}
			PTR	`ns2.o2switch.net`
MX	`mail.certainement.fr` ⭐
		A	109.234.167.134^{🇫🇷 O2SWITCH109.234.164.0/22}
			PTR	`109-234-167-134.reverse.odns.fr`
TXT	`v=spf1 ip4:109.234.167.134 +a +mx +include:spf.jabatus.fr ~all`
SOA	`ns1.o2switch.net`sysadmin@o2switch.fr 2025-11-15 #5

`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	`25 RRs processed [18/05/2026 04H40:51]`
	SOA	`a.nic.fr`dnsmaster@afnic.fr serial=2245143753

Subdomains

mail.certainement.fr

Same first word

certainement.fr

Similar names

acmeinternet.net

DNS History

4 records (4 active, 0 former)

●NSns1.o2switch.net2026-02-22 → 2026-05-18 · 2 obs

● 2026-02-22 14:11:40
● 2026-05-18 05:03:12

●NSns2.o2switch.net2026-02-22 → 2026-05-18 · 2 obs

● 2026-02-22 14:11:40
● 2026-05-18 05:03:12

●MXmail.certainement.fr2026-02-22 → 2026-05-18 · 5 obs

● 2026-02-22 14:11:40
● 2026-03-06 05:28:54
○ 2026-04-07 11:22:36
● 2026-04-30 12:14:14
● 2026-05-18 05:03:12

●A78.40.11.882026-02-22 → 2026-05-18 · 5 obs

● 2026-02-22 14:11:40
● 2026-03-06 05:28:54
○ 2026-04-07 11:22:36
● 2026-04-30 12:14:14
● 2026-05-18 05:03:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fr	f.ext.nic.fr, g.ext.nic.fr, d.nic.fr	-
certainement.fr	ns1.o2switch.net, ns2.o2switch.net	-

✅ Authoritative Response

Server:109.234.160.5

NS records: ns1.o2switch.net, ns2.o2switch.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certainement.fr (unsigned zone)

⏱️ Timing

Total: 902ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`78.40.11.88`
NS	2	`ns1.o2switch.net, ns2.o2switch.net`
MX	1	`mail.certainement.fr (pri: 0)`
TXT	1	`v=spf1 ip4:109.234.167.134 +a +mx +inclu`
SOA	1	`ns1.o2switch.net sysadmin.o2switch.fr`

Analysis

Hierarchy

certainement.fr is a parent of mail.certainement.fr.

IP Addresses

certainement.fr points to one IP number: 78.40.11.88.

Other host names, for instance emailing.fr, bougetoi.fr, www.redacom.ch and 2 other share IP numbers with certainement.fr.

Name Servers

certainement.fr is delegated to two name servers, ns1.o2switch.net and ns2.o2switch.net.

certainement.fr shares the same name server setup with other domains, for instance cdbn.be, arbitrhand.fr, pazapaenligne.com and 2 other.

The host names ns1.o2switch.net, ns2.o2switch.net each point to one IP number: ns1.o2switch.net points to 109.234.160.5. ns2.o2switch.net points to 109.234.161.5.

Mail Servers

certainement.fr is handled by one mail server, mail.certainement.fr.

The host name mail.certainement.fr points to one IP number: 109.234.167.134.

certainement.fr - robtex.com

certainement.fr

fr