`derskurs.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:b192^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:3832^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.56.50^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.177.146^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jake.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b7a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jake.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c17a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jake.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:217a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jake.ns.cloudflare.com`
		A	108.162.193.122^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jake.ns.cloudflare.com`
		A	172.64.33.122^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jake.ns.cloudflare.com`
		A	173.245.59.122^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jake.ns.cloudflare.com`
NS	`mary.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a86^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c086^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mary.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2086^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mary.ns.cloudflare.com`
		A	108.162.192.134^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	172.64.32.134^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	173.245.58.134^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.56.50, 172.67.177.146
		IPv6 hints	2606:4700:3030::ac43:b192, 2606:4700:3031::6815:3832
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=253, name=cloudflare-ech.com
SOA	`jake.ns.cloudflare.com`dns@cloudflare.com serial=2410726804

`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=1786153559

Same first word

derskurs.com

DNS History

14 records (6 active, 8 former)

●NSjake.ns.cloudflare.com2026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

●NSmary.ns.cloudflare.com2026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

○NSns77.domaincontrol.com2015-05-24 → 2017-12-10 · 4 obs

● 2015-05-24 10:15:24
● 2017-12-10 05:46:00
○ 2026-08-02 11:37:44
○ 2026-08-08 01:59:14

○NSns78.domaincontrol.com2015-05-24 → 2017-12-10 · 4 obs

● 2015-05-24 10:15:24
● 2017-12-10 05:46:00
○ 2026-08-02 11:37:44
○ 2026-08-08 01:59:14

○MXmail.derskurs.com2017-12-10 → 2017-12-10 · 4 obs

○ 2016-09-14 07:33:32
● 2017-12-10 05:46:00
○ 2026-08-02 11:37:44
○ 2026-08-08 01:59:14

○MXmailstore1.secureserver.net2015-05-24 → 2016-09-14 · 4 obs

● 2015-05-24 10:15:24
● 2016-09-14 07:33:32
○ 2017-12-10 05:46:00
○ 2026-08-08 01:59:14

○MXsmtp.secureserver.net2015-05-24 → 2016-09-14 · 4 obs

● 2015-05-24 10:15:24
● 2016-09-14 07:33:32
○ 2017-12-10 05:46:00
○ 2026-08-08 01:59:14

●A104.21.56.502026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

○A160.153.18.1022017-12-10 → 2017-12-10 · 4 obs

○ 2016-09-14 07:33:32
● 2017-12-10 05:46:00
○ 2026-08-02 11:37:44
○ 2026-08-08 01:59:14

●A172.67.177.1462026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

●A2606:4700:3030::ac43:b1922026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

●A2606:4700:3031::6815:38322026-08-02 → 2026-08-08 · 3 obs

○ 2017-12-10 05:46:00
● 2026-08-02 11:37:44
● 2026-08-08 01:59:14

○A50.63.202.512015-12-27 → 2016-09-14 · 5 obs

○ 2015-10-23 03:23:30
● 2015-12-27 10:55:28
● 2016-09-14 07:33:32
○ 2017-12-10 05:46:00
○ 2026-08-08 01:59:14

○A50.63.99.12015-05-24 → 2015-10-23 · 4 obs

● 2015-05-24 10:15:24
● 2015-10-23 03:23:30
○ 2015-12-27 10:55:28
○ 2026-08-08 01:59:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
derskurs.com	jake.ns.cloudflare.com, mary.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.122

NS records: jake.ns.cloudflare.com, mary.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for derskurs.com (unsigned zone)

⏱️ Timing

Total: 142ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.177.146, 104.21.56.50`
AAAA	2	`2606:4700:3031::6815:3832, 2606:4700:3030::ac43:b192`
NS	2	`jake.ns.cloudflare.com, mary.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jake.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (jake.ns.cloudflare.com, jake.ns.cloudflare.com, jake.ns.cloudflare.com...)

Analysis

IP Addresses

derskurs.com resolves to four IP addresses: 104.21.56.50, 172.67.177.146, 2606:4700:3030::ac43:b192 and 2606:4700:3031::6815:3832.

www.iheartteachingmusic.com, chadam.pl, www.ciaprint.com plus two other host names have IP numbers in common with derskurs.com.

Name Servers

The NS records for derskurs.com delegate to jake.ns.cloudflare.com and mary.ns.cloudflare.com.

The name server configuration of derskurs.com is shared with other domains, for instance dartrecruitment.co.uk, autohandelreinaert.be, trealyfarm.com and two others.

derskurs.com shares at least some of its name servers with other domains, including thegilmoreaac.org, paydirt.in, neiyiwang.com.cn and two others.

These name servers are frequently paired with the name servers sue.ns.cloudflare.com and zoe.ns.cloudflare.com.

Hosts with 6 IP addresses each:

jake.ns.cloudflare.com maps to 108.162.193.122, 172.64.33.122, 173.245.59.122 and 3 additional IP addresses.

mary.ns.cloudflare.com maps to 108.162.192.134, 172.64.32.134, 173.245.58.134 and 3 additional IP addresses.

derskurs.com - robtex.com

derskurs.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`derskurs.com`

`com`