classguide.study - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`classguide.study`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:3866^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:b7c4^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.56.102^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.183.196^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dilbert.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b9b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dilbert.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c19b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dilbert.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:219b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dilbert.ns.cloudflare.com`
		A	108.162.193.155^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dilbert.ns.cloudflare.com`
		A	172.64.33.155^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dilbert.ns.cloudflare.com`
		A	173.245.59.155^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dilbert.ns.cloudflare.com`
NS	`hera.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aa2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hera.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hera.ns.cloudflare.com`
		A	108.162.192.162^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	172.64.32.162^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
		A	173.245.58.162^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hera.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	2607:f8b0:4004:c19::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f26.1e100.net`
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f27.1e100.net`
			PTR	`pe-in-f27.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.111.26^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f26.1e100.net`
		A	142.251.111.27^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f27.1e100.net`
TXT	`google-site-verification=6Nk_G9RQ85YqN7gphXh1QTmL9IucxP7D8_J35w1bIZM`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.56.102, 172.67.183.196
		IPv6 hints	2606:4700:3032::6815:3866, 2606:4700:3036::ac43:b7c4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=232, name=cloudflare-ech.com
SOA	`dilbert.ns.cloudflare.com`dns@cloudflare.com serial=2412559030

`study`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.study` ⭐
	NS	`b.nic.study`
	NS	`c.nic.study`
	NS	`x.nic.study`
	NS	`y.nic.study`
	NS	`z.nic.study`
	SOA	`a.nic.study`admin@tldns.godaddy serial=1788122500

Same first word

classguide.study

classguide.com

Similar names

guideclass.com

guideclass.fun

Previous names

Next names

DNS History

11 records (7 active, 4 former)

●NSdilbert.ns.cloudflare.com2026-08-22 → 2026-08-30 · 2 obs

● 2026-08-22 20:39:12
● 2026-08-30 21:23:14

●NShera.ns.cloudflare.com2026-08-22 → 2026-08-30 · 2 obs

● 2026-08-22 20:39:12
● 2026-08-30 21:23:14

●MXsmtp.google.com2026-08-22 → 2026-08-30 · 2 obs

● 2026-08-22 20:39:12
● 2026-08-30 21:23:14

●A104.21.56.1022026-08-23 → 2026-08-30 · 5 obs

○ 2026-08-22 20:39:12
● 2026-08-23 18:43:36
○ 2026-08-28 21:41:16
● 2026-08-29 07:05:42
● 2026-08-30 21:23:14

●A172.67.183.1962026-08-23 → 2026-08-30 · 5 obs

○ 2026-08-22 20:39:12
● 2026-08-23 18:43:36
○ 2026-08-28 21:41:16
● 2026-08-29 07:05:42
● 2026-08-30 21:23:14

○A188.114.96.02026-08-22 → 2026-08-28 · 5 obs

● 2026-08-22 20:39:12
○ 2026-08-23 18:43:36
● 2026-08-28 21:41:16
○ 2026-08-29 07:05:42
○ 2026-08-30 21:23:14

○A188.114.97.02026-08-22 → 2026-08-28 · 5 obs

● 2026-08-22 20:39:12
○ 2026-08-23 18:43:36
● 2026-08-28 21:41:16
○ 2026-08-29 07:05:42
○ 2026-08-30 21:23:14

●A2606:4700:3032::6815:38662026-08-23 → 2026-08-30 · 5 obs

○ 2026-08-22 20:39:12
● 2026-08-23 18:43:36
○ 2026-08-28 21:41:16
● 2026-08-29 07:05:42
● 2026-08-30 21:23:14

●A2606:4700:3036::ac43:b7c42026-08-23 → 2026-08-30 · 5 obs

○ 2026-08-22 20:39:12
● 2026-08-23 18:43:36
○ 2026-08-28 21:41:16
● 2026-08-29 07:05:42
● 2026-08-30 21:23:14

○A2a06:98c1:3120::2026-08-22 → 2026-08-28 · 5 obs

● 2026-08-22 20:39:12
○ 2026-08-23 18:43:36
● 2026-08-28 21:41:16
○ 2026-08-29 07:05:42
○ 2026-08-30 21:23:14

○A2a06:98c1:3121::2026-08-22 → 2026-08-28 · 5 obs

● 2026-08-22 20:39:12
○ 2026-08-23 18:43:36
● 2026-08-28 21:41:16
○ 2026-08-29 07:05:42
○ 2026-08-30 21:23:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
study	c.nic.study, z.nic.study, a.nic.study, b.nic.study...	12 records
classguide.study	hera.ns.cloudflare.com, dilbert.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.155

NS records: hera.ns.cloudflare.com, dilbert.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classguide.study (unsigned zone)

⏱️ Timing

Total: 598ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.56.102, 172.67.183.196`
AAAA	2	`2606:4700:3032::6815:3866, 2606:4700:3036::ac43:b7c4`
NS	2	`dilbert.ns.cloudflare.com, hera.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=6Nk_G9RQ85YqN7g, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dilbert.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.study, b.nic.study, c.nic.study...)

Analysis

IP Addresses

classguide.study resolves to four IP addresses: 104.21.56.102, 172.67.183.196, 2606:4700:3032::6815:3866 and 2606:4700:3036::ac43:b7c4.

Additional host names — casino8720.buzz, invest254.com, texaspassports.com and two others — share IP numbers with classguide.study.

Name Servers

classguide.study has two authoritative name servers — dilbert.ns.cloudflare.com and hera.ns.cloudflare.com.

classguide.study shares its name server setup with other domains, including leanlabsdemand.info, ethicalalphaleadglide.com, xn--80akmgqeifceg0c.xn--p1ai and two others.

classguide.study partially shares its NS delegation with several other domains, including mmtoyshop.com, 17zoo5d1tuiuzpkgb.workers.dev, artsalon.kiev.ua and two others.

These name servers often co-occur with the name servers bart.ns.cloudflare.com.

Host names with 6 IP numbers:

dilbert.ns.cloudflare.com points to 108.162.193.155, 172.64.33.155, 173.245.59.155 and 3 other IP addresses.

hera.ns.cloudflare.com points to 108.162.192.162, 172.64.32.162, 173.245.58.162 and 3 other IP addresses.

Mail Servers

classguide.study has one mail server: smtp.google.com.

classguide.study shares the same mail server setup as other domains, including randr.jp, veronasa.com, ebisusushi.jp and two others.

classguide.study shares mail servers — at least in part — with other domains, including succedestudio.com, evolvesquadsstaff.com, soutronpartner.com and two others.

smtp.google.com points to 9 IP numbers: 64.233.180.27, 142.251.16.26, 142.251.16.27 and 6 other.