`howtolearnclass.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:b1d^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a517^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.11.29^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.165.23^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`achiel.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c7b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`achiel.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`achiel.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`achiel.ns.cloudflare.com`
		A	108.162.195.123^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`achiel.ns.cloudflare.com`
		A	162.159.44.123^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`achiel.ns.cloudflare.com`
		A	172.64.35.123^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`achiel.ns.cloudflare.com`
NS	`hadlee.ns.cloudflare.com`
		A	2606:4700:50::a29f:2643^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hadlee.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c243^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hadlee.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2243^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hadlee.ns.cloudflare.com`
		A	108.162.194.67^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hadlee.ns.cloudflare.com`
		A	162.159.38.67^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hadlee.ns.cloudflare.com`
		A	172.64.34.67^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hadlee.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.11.29, 172.67.165.23
		IPv6 hints	2606:4700:3030::6815:b1d, 2606:4700:3035::ac43:a517
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=71, name=cloudflare-ech.com
SOA	`achiel.ns.cloudflare.com`dns@cloudflare.com serial=2402991749

`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=1778395406

Same first word

howtolearnclass.com

DNS History

8 records (6 active, 2 former)

●NSachiel.ns.cloudflare.com2026-04-11 → 2026-05-10 · 3 obs

○ 2017-12-13 15:14:00
● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

●NShadlee.ns.cloudflare.com2026-04-11 → 2026-05-10 · 3 obs

○ 2017-12-13 15:14:00
● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

○NSns3.dnsv2.com2017-12-13 → 2017-12-13 · 3 obs

● 2017-12-13 15:14:00
○ 2026-04-11 04:05:06
○ 2026-05-10 07:03:26

○NSns4.dnsv2.com2017-12-13 → 2017-12-13 · 3 obs

● 2017-12-13 15:14:00
○ 2026-04-11 04:05:06
○ 2026-05-10 07:03:26

●A104.21.11.292026-04-11 → 2026-05-10 · 2 obs

● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

●A172.67.165.232026-04-11 → 2026-05-10 · 2 obs

● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

●A2606:4700:3030::6815:b1d2026-04-11 → 2026-05-10 · 2 obs

● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

●A2606:4700:3035::ac43:a5172026-04-11 → 2026-05-10 · 2 obs

● 2026-04-11 04:05:06
● 2026-05-10 07:03:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
howtolearnclass.com	hadlee.ns.cloudflare.com, achiel.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.67

NS records: hadlee.ns.cloudflare.com, achiel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for howtolearnclass.com (unsigned zone)

⏱️ Timing

Total: 199ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.165.23, 104.21.11.29`
AAAA	2	`2606:4700:3035::ac43:a517, 2606:4700:3030::6815:b1d`
NS	2	`achiel.ns.cloudflare.com, hadlee.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`achiel.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

howtolearnclass.com maps to four IP numbers: 2606:4700:3030::6815:b1d, 2606:4700:3035::ac43:a517, 104.21.11.29 and 172.67.165.23.

Other host names such as creconsult.org, blinkist.de, a545b7.com, heavenandearthacu.com and pedrini.com.br share IPs with howtolearnclass.com.

Name Servers

Two name servers achiel.ns.cloudflare.com and hadlee.ns.cloudflare.com handle the delegation for howtolearnclass.com.

howtolearnclass.com shares the same name server setup as other domains, for example deyuanmiaomu.com, hanlians.cn, db9900.com, enterpyh.com and oumeilai.net.

howtolearnclass.com at least partially shares name servers with other domains, for example kharkiv.biz.ua, maricopa-az.gov, igri3d.ru, earnmnre-nnfccg.click and flirtbase-time.com.

These name servers are often used together with shane.ns.cloudflare.com and monroe.ns.cloudflare.com.

Host names with six IP numbers:

achiel.ns.cloudflare.com points to 2606:4700:58::a29f:2c7b, 2803:f800:50::6ca2:c37b, 2a06:98c1:50::ac40:237b, 108.162.195.123, 162.159.44.123 and 172.64.35.123.

hadlee.ns.cloudflare.com points to 2606:4700:50::a29f:2643, 2803:f800:50::6ca2:c243, 2a06:98c1:50::ac40:2243, 108.162.194.67, 162.159.38.67 and 172.64.34.67.

howtolearnclass.com - robtex.com