`rostud.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:ca6d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1625^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.22.37^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.109^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`anastasia.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26e3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anastasia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2e3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`anastasia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22e3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`anastasia.ns.cloudflare.com`
		A	108.162.194.227^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anastasia.ns.cloudflare.com`
		A	162.159.38.227^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anastasia.ns.cloudflare.com`
		A	172.64.34.227^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anastasia.ns.cloudflare.com`
NS	`gabriel.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cf4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriel.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3f4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gabriel.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23f4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gabriel.ns.cloudflare.com`
		A	108.162.195.244^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriel.ns.cloudflare.com`
		A	162.159.44.244^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriel.ns.cloudflare.com`
		A	172.64.35.244^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriel.ns.cloudflare.com`
MX	`mx2.zoho.com` ⭐
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`v=spf1 include:_spf.mail.hostinger.com include:zohomail.com ~all`
TXT	`zoho-verification=zb45923210.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.22.37, 172.67.202.109
		IPv6 hints	2606:4700:3033::ac43:ca6d, 2606:4700:3037::6815:1625
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=142, name=cloudflare-ech.com
SOA	`anastasia.ns.cloudflare.com`dns@cloudflare.com serial=2409531623

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1785658984

Same first word

rostud.io

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DNS History

10 records (9 active, 1 former)

●NSanastasia.ns.cloudflare.com2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●NSgabriel.ns.cloudflare.com2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●MXmx.zoho.com2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●MXmx2.zoho.com2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●MXmx3.zoho.com2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●A104.21.22.372026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●A172.67.202.1092026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

○A2606:4700:3030::6815:16252026-05-25 → 2026-05-25 · 3 obs

● 2026-05-25 18:17:48
○ 2026-06-28 18:38:36
○ 2026-08-02 08:58:54

●A2606:4700:3033::ac43:ca6d2026-05-25 → 2026-08-02 · 2 obs

● 2026-05-25 18:17:48
● 2026-08-02 08:58:54

●A2606:4700:3037::6815:16252026-06-28 → 2026-08-02 · 3 obs

○ 2026-05-25 18:17:48
● 2026-06-28 18:38:36
● 2026-08-02 08:58:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
rostud.io	gabriel.ns.cloudflare.com, anastasia.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.227

NS records: gabriel.ns.cloudflare.com, anastasia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rostud.io (unsigned zone)

⏱️ Timing

Total: 461ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.202.109, 104.21.22.37`
AAAA	2	`2606:4700:3037::6815:1625, 2606:4700:3033::ac43:ca6d`
NS	2	`anastasia.ns.cloudflare.com, gabriel.ns.cloudflare.com`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
TXT	2	`v=spf1 include:_spf.mail.hostinger.com i, zoho-verification=zb45923210.zmverify.zo`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`anastasia.ns.cloudflare.com dns.cloudfla`

Analysis

IP Addresses

rostud.io resolves to four IP addresses: 104.21.22.37, 172.67.202.109, 2606:4700:3033::ac43:ca6d and 2606:4700:3037::6815:1625.

www.cdxxy.cn, vanstart.com, conexoo.com plus two other host names have IP numbers in common with rostud.io.

Name Servers

DNS delegation for rostud.io points to two name servers: anastasia.ns.cloudflare.com and gabriel.ns.cloudflare.com.

The name server configuration of rostud.io is shared with other domains, for instance com-saintpierre.com, alarmnation.com, inboxexpertiesworks.agency and two others.

rostud.io has at least partial name server overlap with other domains, such as 715am.com, aktif-jojobetgirisi.icu, asgdhgdhd.top and two others.

These name servers tend to appear together with the name servers ursula.ns.cloudflare.com, ace.ns.cloudflare.com and elijah.ns.cloudflare.com.

Hosts with 6 IP addresses each:

anastasia.ns.cloudflare.com has IP addresses 108.162.194.227, 162.159.38.227 and 172.64.34.227, plus 3 other.

gabriel.ns.cloudflare.com has IP addresses 108.162.195.244, 162.159.44.244 and 172.64.35.244, plus 3 other.

Mail Servers

rostud.io has three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

At least some of the mail servers used by rostud.io are shared with other domains: associatedoptions.com, farvardin.info, smdc.it and two others among them.

Three hosts, each with one IP address: mx2.zoho.com → 136.143.183.44; mx3.zoho.com → 204.141.43.44; mx.zoho.com → 204.141.43.44.

Host names pointing to 204.141.43.44 IP addresses: mx3.zoho.com and mx.zoho.com.

rostud.io - robtex.com

rostud.io

io

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`rostud.io`

`io`