🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`studentdevguide.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:c35c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:31e6^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.49.230^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.92^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kolton.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c19^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kolton.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c319^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kolton.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2319^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kolton.ns.cloudflare.com`
		A	108.162.195.25^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kolton.ns.cloudflare.com`
		A	162.159.44.25^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kolton.ns.cloudflare.com`
		A	172.64.35.25^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kolton.ns.cloudflare.com`
NS	`sue.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a91^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c091^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sue.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2091^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sue.ns.cloudflare.com`
		A	108.162.192.145^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	172.64.32.145^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
		A	173.245.58.145^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sue.ns.cloudflare.com`
TXT	`google-site-verification=V5w4V8UopTL-W0NVQjn7DbIpn8W_ZqIIs40MaM(0x787878)Kc`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.49.230, 172.67.195.92
		IPv6 hints	2606:4700:3033::ac43:c35c, 2606:4700:3035::6815:31e6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=61, name=cloudflare-ech.com
SOA	`kolton.ns.cloudflare.com`dns@cloudflare.com serial=2414043395

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

studentdevguide.dev

Previous names

Next names

DNS History

6 records (6 active, 0 former)

●NSkolton.ns.cloudflare.com2026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

●NSsue.ns.cloudflare.com2026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

●A104.21.49.2302026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

●A172.67.195.922026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

●A2606:4700:3033::ac43:c35c2026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

●A2606:4700:3035::6815:31e62026-09-08 → 2026-10-04 · 2 obs

● 2026-09-08 16:16:44
● 2026-10-04 14:59:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
studentdevguide.dev	sue.ns.cloudflare.com, kolton.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.145

NS records: sue.ns.cloudflare.com, kolton.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studentdevguide.dev (unsigned zone)

⏱️ Timing

Total: 1339ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.49.230, 172.67.195.92`
AAAA	2	`2606:4700:3035::6815:31e6, 2606:4700:3033::ac43:c35c`
NS	2	`kolton.ns.cloudflare.com, sue.ns.cloudflare.com`
TXT	1	`google-site-verification=V5w4V8UopTL-W0N`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kolton.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

studentdevguide.dev points to the four IP addresses 104.21.49.230, 172.67.195.92, 2606:4700:3033::ac43:c35c and 2606:4700:3035::6815:31e6.

yesapps.me, balddan.com, tranquilitycp.com and two other host names share IP numbers with studentdevguide.dev.

Name Servers

studentdevguide.dev has two authoritative name servers — kolton.ns.cloudflare.com and sue.ns.cloudflare.com.

studentdevguide.dev uses the same name servers as several other domains — among them mevlonariexo.sbs, mama-cfd.workers.dev, themodels-book.pages.dev and two more.

At least some of studentdevguide.dev's name servers are shared with other domains, for example campingpeace.com, jimmyfanboyy.workers.dev, demetri-0fe.workers.dev and two more.

These name servers tend to be deployed in combination with the name servers nile.ns.cloudflare.com and monroe.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

kolton.ns.cloudflare.com points to 108.162.195.25, 162.159.44.25, 172.64.35.25 and 3 other IP addresses.

sue.ns.cloudflare.com points to 108.162.192.145, 172.64.32.145, 173.245.58.145 and 3 other IP addresses.

studentdevguide.dev - robtex.com