`koostoo.fr`

DNSSEC	⚠️ Not signed
NS	`ns0.online.net` ⭐
		A	2001:bc8:1408:1::12^{🇳🇱 AS128762001:bc8:1400::/38}
		A	195.154.228.249^{🇫🇷 AS12876195.154.0.0/16 Scaleway Paris, France}
			PTR	`ns0.online.net`
NS	`ns1.online.net`
		A	2001:bc8:408:1::f^{🇫🇷 AS128762001:bc8::/32 Scaleway Paris, France}
		A	62.210.16.9^{🇫🇷 AS1287662.210.0.0/16 Scaleway Paris, France}
			PTR	`ns1.online.net`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
TXT	`protonmail-verification=48e8b4a4a1884727924e84fd75bba903d1152535`
SOA	`ns0.online.net`hostmaster@koostoo.fr 2026-01-22 #10

`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	`26 RRs processed [27/04/2026 23H00:49]`
	SOA	`a.nic.fr`dnsmaster@afnic.fr serial=2244940780

Same first word

koostoo.fr

Similar names

sokotoo.com

kootsoo.com

DNS History

8 records (4 active, 4 former)

●NSns0.online.net2015-07-06 → 2026-04-27 · 2 obs

● 2015-07-06 09:22:54
● 2026-04-27 23:28:48

●NSns1.online.net2015-07-06 → 2026-04-27 · 2 obs

● 2015-07-06 09:22:54
● 2026-04-27 23:28:48

○NSnsmaster.nic.fr2015-07-06 → 2017-02-07 · 4 obs

● 2015-07-06 09:22:54
● 2017-02-07 19:49:22
○ 2020-03-11 11:54:40
○ 2026-04-27 23:28:48

○MXmail.koostoo.fr2015-07-06 → 2020-03-11 · 4 obs

● 2015-07-06 09:22:54
● 2020-03-11 11:54:40
○ 2026-03-24 20:04:26
○ 2026-04-27 23:28:48

●MXmail.protonmail.ch2026-03-24 → 2026-04-27 · 3 obs

○ 2020-03-11 11:54:40
● 2026-03-24 20:04:26
● 2026-04-27 23:28:48

●MXmailsec.protonmail.ch2026-03-24 → 2026-04-27 · 3 obs

○ 2020-03-11 11:54:40
● 2026-03-24 20:04:26
● 2026-04-27 23:28:48

○A62.210.136.1012015-07-06 → 2017-02-07 · 4 obs

● 2015-07-06 09:22:54
● 2017-02-07 19:49:22
○ 2020-03-11 11:54:40
○ 2026-04-27 23:28:48

○A91.121.62.532020-03-11 → 2020-03-11 · 4 obs

○ 2017-02-07 19:49:22
● 2020-03-11 11:54:40
○ 2026-03-24 20:04:26
○ 2026-04-27 23:28:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
fr	g.ext.nic.fr, d.nic.fr, f.ext.nic.fr	6 records
koostoo.fr	ns0.online.net, ns1.online.net	-

✅ Authoritative Response

Server:195.154.228.249

NS records: ns0.online.net, ns1.online.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koostoo.fr (unsigned zone)

⏱️ Timing

Total: 1011ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns0.online.net, ns1.online.net`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`v=spf1 include:_spf.protonmail.ch ~all, protonmail-verification=48e8b4a4a1884727`
SOA	1	`ns0.online.net hostmaster.koostoo.fr`

📌 Glue Records Collected

Total: 6

In-bailiwick: 6 (d.nic.fr, f.ext.nic.fr, g.ext.nic.fr...)

Analysis

Name Servers

koostoo.fr is delegated to two name servers ns0.online.net and ns1.online.net.

koostoo.fr shares the same name server setup as other domains, for instance ri.be, 116.141.210.62.in-addr.arpa, info-sectes.org, 26.253.47.212.in-addr.arpa and 123.77.159.51.in-addr.arpa.

koostoo.fr at least partially shares name servers with other domains, for instance 139.15.51.in-addr.arpa, lumicone.fr, 235.15.51.in-addr.arpa, rainermariarilke.fr and claironett.fr.

These name servers are commonly used with nsmaster.nic.fr, ns0.scaleway.com and ns1.scaleway.com.

Host names with two IP numbers:

The host name ns0.online.net points to 2001:bc8:1408:1::12 and 195.154.228.249; the host name ns1.online.net points to 2001:bc8:408:1::f and 62.210.16.9.

Mail Servers

Two mail servers handle koostoo.fr: mail.protonmail.ch and mailsec.protonmail.ch.

koostoo.fr shares the same mail server setup as other domains, for instance garness.com, t24.co, houschka.de, mosleylanewholesale.com and modity.com.

koostoo.fr shares some mail servers with other domains, at least partially, for instance scvtax.com, filbeck.net, lankhorst.org, srsly.info and langvand.net.

Host names with three IPs:

mail.protonmail.ch points to 176.119.200.128, 185.70.42.128 and 185.205.70.128.

mailsec.protonmail.ch points to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

koostoo.fr - robtex.com

koostoo.fr

fr