offcourses.net - dns.ninja

`offcourses.net`

DNSSEC	⚠️ Not signed
A	51.210.99.122^{🇫🇷 OVH51.210.0.0/16}
		PTR	`ns3173564.ip-51-210-99.eu`
NS	`dns103.ovh.net` ⭐
		A	2001:41d0:d00:fd00::2^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`dns103.ovh.net`
		A	5.196.39.89^{🇫🇷 OVH5.196.0.0/16}
			PTR	`dns103.ovh.net`
NS	`ns103.ovh.net`
		A	2001:41d0:b00:f700::2^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`ns103.ovh.net`
		A	5.135.54.65^{🇧🇪 OVH5.135.0.0/16}
			PTR	`ns103.ovh.net`
MX	`offcourses-net.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::1^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00401.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::2^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du2pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::7^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
		A	52.101.73.24^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr05cu00300.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
		A	52.101.73.28^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00204.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.mailjet.com include:spf.sendinblue.com include:spf.protect...`
TXT	`Sendinblue-code:ea793197f9b57af036ca85d93010d166`
TXT	`MS=ms28737168`
TXT	`google-site-verification=XqUdkivliVokZ_zKCS9zV7COhgWMA0C4Gg0D0Gp-sFY`
SOA	`dns103.ovh.net`tech@ovh.net 2023-10-26 #3

`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=1785915849

rank #497157 globally
rank #14250 in the tld

Same first word

offcourses.com

offcourses.fr

offcourses.net

DNS History

9 records (4 active, 5 former)

●NSdns103.ovh.net2015-08-22 → 2026-08-05 · 2 obs

● 2015-08-22 12:50:28
● 2026-08-05 08:04:28

●NSns103.ovh.net2015-08-22 → 2026-08-05 · 2 obs

● 2015-08-22 12:50:28
● 2026-08-05 08:04:28

○MXmx1.deltson.com2015-08-22 → 2017-04-06 · 4 obs

● 2015-08-22 12:50:28
● 2017-04-06 12:47:32
○ 2026-03-27 03:33:48
○ 2026-08-05 08:04:28

○MXmx2.deltson.com2015-08-22 → 2017-04-06 · 4 obs

● 2015-08-22 12:50:28
● 2017-04-06 12:47:32
○ 2026-03-27 03:33:48
○ 2026-08-05 08:04:28

●MXoffcourses-net.mail.protection.outlook.com2026-03-27 → 2026-08-05 · 3 obs

○ 2017-04-06 12:47:32
● 2026-03-27 03:33:48
● 2026-08-05 08:04:28

○A178.33.105.2412015-08-22 → 2015-08-22 · 3 obs

● 2015-08-22 12:50:28
○ 2015-12-16 21:19:50
○ 2026-08-05 08:04:28

○A213.186.33.1762017-04-06 → 2017-04-06 · 4 obs

○ 2016-09-11 17:14:48
● 2017-04-06 12:47:32
○ 2026-03-27 03:33:48
○ 2026-08-05 08:04:28

●A51.210.99.1222026-03-27 → 2026-08-05 · 3 obs

○ 2017-04-06 12:47:32
● 2026-03-27 03:33:48
● 2026-08-05 08:04:28

○A87.98.178.1102015-12-16 → 2016-09-11 · 5 obs

○ 2015-08-22 12:50:28
● 2015-12-16 21:19:50
● 2016-09-11 17:14:48
○ 2017-04-06 12:47:32
○ 2026-08-05 08:04:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	f.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net...	-
offcourses.net	dns103.ovh.net, ns103.ovh.net	4 records

✅ Authoritative Response

Server:5.135.54.65

NS records: dns103.ovh.net, ns103.ovh.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for offcourses.net (unsigned zone)

⏱️ Timing

Total: 363ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.210.99.122`
NS	2	`dns103.ovh.net, ns103.ovh.net`
MX	1	`offcourses-net.mail.protection.outlook.c`
TXT	4	`MS=ms28737168, google-site-verification=XqUdkivliVokZ_z...`
SOA	1	`dns103.ovh.net tech.ovh.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns103.ovh.net, dns103.ovh.net, ns103.ovh.net...)

Analysis

IP Addresses

offcourses.net resolves to one IP address: 51.210.99.122.

ns3173564.ip-51-210-99.eu is an example of another host name that shares IP numbers with offcourses.net.

Name Servers

offcourses.net has two authoritative name servers — dns103.ovh.net and ns103.ovh.net.

offcourses.net uses the same name servers as several other domains — among them salon-objectifemploi.fr, sollerto.com, asvema.fr and two more.

Both dns103.ovh.net and ns103.ovh.net have two IP addresses each. dns103.ovh.net resolves to 5.196.39.89 and 2001:41d0:d00:fd00::2; ns103.ovh.net resolves to 5.135.54.65 and 2001:41d0:b00:f700::2.

Mail Servers

Mail for offcourses.net is handled by a single mail server, offcourses-net.mail.protection.outlook.com.

offcourses-net.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.73.8, 52.101.73.24, 52.101.73.26 and 5 others.