`istanbulkurs.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:1b6a^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:a91e^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.27.106^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.169.30^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`melnicoff.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cae^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melnicoff.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ae^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melnicoff.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ae^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melnicoff.ns.cloudflare.com`
		A	108.162.195.174^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melnicoff.ns.cloudflare.com`
		A	162.159.44.174^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melnicoff.ns.cloudflare.com`
		A	172.64.35.174^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melnicoff.ns.cloudflare.com`
NS	`rosa.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rosa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rosa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rosa.ns.cloudflare.com`
		A	108.162.192.228^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rosa.ns.cloudflare.com`
		A	172.64.32.228^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rosa.ns.cloudflare.com`
		A	173.245.58.228^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rosa.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.27.106, 172.67.169.30
		IPv6 hints	2606:4700:3032::6815:1b6a, 2606:4700:3033::ac43:a91e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=43, name=cloudflare-ech.com
SOA	`melnicoff.ns.cloudflare.com`dns@cloudflare.com serial=2407561518

`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=1786235274

Subdomains

www.istanbulkurs.com

Similar names

kursistanbul.com

DNS History

17 records (6 active, 11 former)

●NSmelnicoff.ns.cloudflare.com2026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

○NSns.istanbulkurs.com2015-08-19 → 2015-08-19 · 3 obs

● 2015-08-19 09:04:06
○ 2015-12-18 17:17:16
○ 2026-08-09 00:36:14

○NSns1.websahibi.com2015-08-19 → 2015-12-18 · 4 obs

● 2015-08-19 09:04:06
● 2015-12-18 17:17:16
○ 2016-12-09 06:32:28
○ 2026-08-09 00:36:14

○NSns2.websahibi.com2015-08-19 → 2015-12-18 · 4 obs

● 2015-08-19 09:04:06
● 2015-12-18 17:17:16
○ 2016-12-09 06:32:28
○ 2026-08-09 00:36:14

○NSns51.domaincontrol.com2016-12-09 → 2017-10-27 · 5 obs

○ 2015-12-18 17:17:16
● 2016-12-09 06:32:28
● 2017-10-27 13:37:48
○ 2026-08-09 00:36:12
○ 2026-08-09 00:36:14

○NSns52.domaincontrol.com2016-12-09 → 2017-10-27 · 5 obs

○ 2015-12-18 17:17:16
● 2016-12-09 06:32:28
● 2017-10-27 13:37:48
○ 2026-08-09 00:36:12
○ 2026-08-09 00:36:14

●NSrosa.ns.cloudflare.com2026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

○MXmail.istanbulkurs.com2015-08-19 → 2015-12-18 · 4 obs

● 2015-08-19 09:04:06
● 2015-12-18 17:17:16
○ 2016-12-09 06:32:28
○ 2026-08-09 00:36:14

○MXmailstore1.secureserver.net2016-12-09 → 2017-10-27 · 5 obs

○ 2015-12-18 17:17:16
● 2016-12-09 06:32:28
● 2017-10-27 13:37:48
○ 2026-08-09 00:36:12
○ 2026-08-09 00:36:14

○MXsmtp.secureserver.net2016-12-09 → 2017-10-27 · 5 obs

○ 2015-12-18 17:17:16
● 2016-12-09 06:32:28
● 2017-10-27 13:37:48
○ 2026-08-09 00:36:12
○ 2026-08-09 00:36:14

●A104.21.27.1062026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

●A172.67.169.302026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

○A184.168.221.442016-12-09 → 2017-10-27 · 5 obs

○ 2015-12-18 17:17:16
● 2016-12-09 06:32:28
● 2017-10-27 13:37:48
○ 2026-08-09 00:36:12
○ 2026-08-09 00:36:14

○A213.142.141.942015-08-19 → 2015-08-19 · 3 obs

● 2015-08-19 09:04:06
○ 2015-12-18 17:17:16
○ 2026-08-09 00:36:14

○A213.142.145.412015-12-18 → 2015-12-18 · 4 obs

○ 2015-08-19 09:04:06
● 2015-12-18 17:17:16
○ 2016-12-09 06:32:28
○ 2026-08-09 00:36:14

●A2606:4700:3032::6815:1b6a2026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

●A2606:4700:3033::ac43:a91e2026-08-09 → 2026-08-09 · 3 obs

○ 2017-10-27 13:37:48
● 2026-08-09 00:36:12
● 2026-08-09 00:36:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
istanbulkurs.com	rosa.ns.cloudflare.com, melnicoff.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.174

NS records: rosa.ns.cloudflare.com, melnicoff.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for istanbulkurs.com (unsigned zone)

⏱️ Timing

Total: 118ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.27.106, 172.67.169.30`
AAAA	2	`2606:4700:3033::ac43:a91e, 2606:4700:3032::6815:1b6a`
NS	2	`melnicoff.ns.cloudflare.com, rosa.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`melnicoff.ns.cloudflare.com dns.cloudfla`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

istanbulkurs.com serves as the parent of www.istanbulkurs.com.

IP Addresses

istanbulkurs.com resolves to four IP addresses: 104.21.27.106, 172.67.169.30, 2606:4700:3032::6815:1b6a and 2606:4700:3033::ac43:a91e.

Additional host names — dcrapermit.com, www.21cwoman.com, 4428858.com.cdn.cloudflare.net and two others — share IP numbers with istanbulkurs.com.

Name Servers

istanbulkurs.com is delegated to two name servers: melnicoff.ns.cloudflare.com and rosa.ns.cloudflare.com.

istanbulkurs.com shares its name server setup with other domains, including necc.co.uk, evde-internetim.com, chamber.directory and two others.

istanbulkurs.com has at least partial name server overlap with other domains, such as talaythaimenu.com, maco4dnee.com, naoina.info and two others.

These name servers tend to appear together with the name servers darl.ns.cloudflare.com, clarissa.ns.cloudflare.com and perla.ns.cloudflare.com.

Host names with 6 IP numbers:

melnicoff.ns.cloudflare.com resolves to 108.162.195.174, 162.159.44.174, 172.64.35.174 and 3 other IP addresses.

rosa.ns.cloudflare.com resolves to 108.162.192.228, 172.64.32.228, 173.245.58.228 and 3 other IP addresses.

istanbulkurs.com - robtex.com