studman.org - dns.ninja

`studman.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:ac84^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:1e53^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.83^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.172.132^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`derek.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`derek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`derek.ns.cloudflare.com`
		A	108.162.193.154^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	172.64.33.154^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
		A	173.245.59.154^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`derek.ns.cloudflare.com`
NS	`erin.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a71^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c071^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`erin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2071^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`erin.ns.cloudflare.com`
		A	108.162.192.113^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	172.64.32.113^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
		A	173.245.58.113^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`erin.ns.cloudflare.com`
MX	`mail.cwndesign.co.uk` ⭐
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.83, 172.67.172.132
		IPv6 hints	2606:4700:3031::ac43:ac84, 2606:4700:3036::6815:1e53
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=245, name=cloudflare-ech.com
SOA	`derek.ns.cloudflare.com`dns@cloudflare.com serial=2406629672

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1782581294

Same first word

studman.ru

studman.org

studman.net

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sudmant.com

umstand.com

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DNS History

14 records (7 active, 7 former)

●NSderek.ns.cloudflare.com2026-03-21 → 2026-06-27 · 3 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-06-27 18:08:14

●NSerin.ns.cloudflare.com2026-03-21 → 2026-06-27 · 3 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-06-27 18:08:14

○NSns.rackspace.com2015-07-02 → 2017-07-04 · 4 obs

● 2015-07-02 21:58:58
● 2017-07-04 08:30:36
○ 2026-03-21 16:22:46
○ 2026-06-27 18:08:14

○NSns2.rackspace.com2015-07-02 → 2017-07-04 · 4 obs

● 2015-07-02 21:58:58
● 2017-07-04 08:30:36
○ 2026-03-21 16:22:46
○ 2026-06-27 18:08:14

●MXmail.cwndesign.co.uk2015-07-02 → 2026-06-27 · 2 obs

● 2015-07-02 21:58:58
● 2026-06-27 18:08:14

●A104.21.30.832026-03-21 → 2026-06-27 · 7 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-03-28 16:38:22
○ 2026-04-08 17:48:34
○ 2026-04-18 22:42:26
● 2026-06-08 18:57:48
● 2026-06-27 18:08:14

●A172.67.172.1322026-03-21 → 2026-06-27 · 7 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-03-28 16:38:22
○ 2026-04-08 17:48:34
○ 2026-04-18 22:42:26
● 2026-06-08 18:57:48
● 2026-06-27 18:08:14

○A188.114.96.02026-04-08 → 2026-04-18 · 5 obs

○ 2026-03-28 16:38:22
● 2026-04-08 17:48:34
● 2026-04-18 22:42:26
○ 2026-06-08 18:57:48
○ 2026-06-27 18:08:14

○A188.114.97.02026-04-08 → 2026-04-18 · 5 obs

○ 2026-03-28 16:38:22
● 2026-04-08 17:48:34
● 2026-04-18 22:42:26
○ 2026-06-08 18:57:48
○ 2026-06-27 18:08:14

●A2606:4700:3031::ac43:ac842026-03-21 → 2026-06-27 · 7 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-03-28 16:38:22
○ 2026-04-08 17:48:34
○ 2026-04-18 22:42:26
● 2026-06-08 18:57:48
● 2026-06-27 18:08:14

●A2606:4700:3036::6815:1e532026-03-21 → 2026-06-27 · 7 obs

○ 2017-07-04 08:30:36
● 2026-03-21 16:22:46
● 2026-03-28 16:38:22
○ 2026-04-08 17:48:34
○ 2026-04-18 22:42:26
● 2026-06-08 18:57:48
● 2026-06-27 18:08:14

○A2a06:98c1:3120::2026-04-08 → 2026-04-18 · 5 obs

○ 2026-03-28 16:38:22
● 2026-04-08 17:48:34
● 2026-04-18 22:42:26
○ 2026-06-08 18:57:48
○ 2026-06-27 18:08:14

○A2a06:98c1:3121::2026-04-08 → 2026-04-18 · 5 obs

○ 2026-03-28 16:38:22
● 2026-04-08 17:48:34
● 2026-04-18 22:42:26
○ 2026-06-08 18:57:48
○ 2026-06-27 18:08:14

○A92.52.110.32015-07-02 → 2017-07-04 · 4 obs

● 2015-07-02 21:58:58
● 2017-07-04 08:30:36
○ 2026-03-21 16:22:46
○ 2026-06-27 18:08:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
studman.org	derek.ns.cloudflare.com, erin.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.154

NS records: derek.ns.cloudflare.com, erin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studman.org (unsigned zone)

⏱️ Timing

Total: 1010ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.30.83, 172.67.172.132`
AAAA	2	`2606:4700:3036::6815:1e53, 2606:4700:3031::ac43:ac84`
NS	2	`derek.ns.cloudflare.com, erin.ns.cloudflare.com`
MX	1	`mail.cwndesign.co.uk (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`derek.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

studman.org points to the four IP addresses 104.21.30.83, 172.67.172.132, 2606:4700:3031::ac43:ac84 and 2606:4700:3036::6815:1e53.

holuxe.com, wrb-adguard.pro, wxxingguang.com and two other host names share IP numbers with studman.org.

Name Servers

studman.org is delegated to two name servers: derek.ns.cloudflare.com and erin.ns.cloudflare.com.

studman.org uses the same name servers as several other domains — among them limefx.group, xcritical.net, forexarena.net and two more.

At least some of studman.org's name servers are shared with other domains, for example by1998.com, zgmdc.net, quocluat.com and two more.

Hostnames that resolve to 6 IP addresses:

derek.ns.cloudflare.com resolves to 108.162.193.154, 172.64.33.154, 173.245.59.154 and 3 other IP addresses.

erin.ns.cloudflare.com resolves to 108.162.192.113, 172.64.32.113, 173.245.58.113 and 3 other IP addresses.

Mail Servers

Mail for studman.org is handled by a single mail server, mail.cwndesign.co.uk.

The mail server configuration of studman.org is identical to that of other domains — styrenic(0x736578)tranet.com being one example.