🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`codehandbook.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:53ba^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:b4d8^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.83.186^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.180.216^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`chin.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a54^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c054^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`chin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2054^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`chin.ns.cloudflare.com`
		A	108.162.192.84^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chin.ns.cloudflare.com`
		A	172.64.32.84^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chin.ns.cloudflare.com`
		A	173.245.58.84^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chin.ns.cloudflare.com`
NS	`felipe.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c74^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c374^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`felipe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2374^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`felipe.ns.cloudflare.com`
		A	108.162.195.116^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	162.159.44.116^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
		A	172.64.35.116^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`felipe.ns.cloudflare.com`
MX	`mx01.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
MX	`mx02.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
TXT	`apple-domain=4pC1Xj5WGCnYtlA2`
TXT	`brevo-code:555be405678ffcee44c4d66198ffe643`
TXT	`google-site-verification=QhW0FuXTsUVpvk6PtSpIXhD5QV43DheyBf0q9dbmh8A`
TXT	`v=spf1 include:icloud.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.83.186, 172.67.180.216
		IPv6 hints	2606:4700:3033::6815:53ba, 2606:4700:3035::ac43:b4d8
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=252, name=cloudflare-ech.com
SOA	`chin.ns.cloudflare.com`dns@cloudflare.com serial=2412361020

`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

codehandbook.com

codehandbook.dev

Previous names

Next names

DNS History

8 records (8 active, 0 former)

●NSchin.ns.cloudflare.com2026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●NSfelipe.ns.cloudflare.com2026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●MXmx01.mail.icloud.com2026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●MXmx02.mail.icloud.com2026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●A104.21.83.1862026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●A172.67.180.2162026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●A2606:4700:3033::6815:53ba2026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

●A2606:4700:3035::ac43:b4d82026-08-26 → 2026-08-27 · 2 obs

● 2026-08-26 03:06:54
● 2026-08-27 19:54:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	10 records
codehandbook.dev	felipe.ns.cloudflare.com, chin.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.116

NS records: felipe.ns.cloudflare.com, chin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codehandbook.dev (unsigned zone)

⏱️ Timing

Total: 2944ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.83.186, 172.67.180.216`
AAAA	2	`2606:4700:3035::ac43:b4d8, 2606:4700:3033::6815:53ba`
NS	2	`chin.ns.cloudflare.com, felipe.ns.cloudflare.com`
MX	2	`mx01.mail.icloud.com (pri: 10), mx02.mail.icloud.com (pri: 10)`
TXT	4	`apple-domain=4pC1Xj5WGCnYtlA2, brevo-code:555be405678ffcee44c4d66198ffe...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`chin.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

codehandbook.dev has four IP addresses: 104.21.83.186, 172.67.180.216, 2606:4700:3033::6815:53ba and 2606:4700:3035::ac43:b4d8.

jgxybj.com, matbet9825.icu, mailgrowthx.com plus two other host names have IP numbers in common with codehandbook.dev.

Name Servers

Two name servers handle the delegation for codehandbook.dev: chin.ns.cloudflare.com and felipe.ns.cloudflare.com.

The name server configuration of codehandbook.dev is shared with other domains, for instance algomaster.edu.vn, parhai.pk, cinghe.cc and two others.

codehandbook.dev shares at least some of its name servers with other domains, including 52tz.cn, civilsocietyforum.eu, hartmindandfood.co.nz and two others.

These name servers are frequently seen alongside the name servers kara.ns.cloudflare.com.

Hosts with 6 IP addresses each:

chin.ns.cloudflare.com resolves to 108.162.192.84, 172.64.32.84 and 173.245.58.84 among others, with 3 other IP addresses in total.

felipe.ns.cloudflare.com resolves to 108.162.195.116, 162.159.44.116 and 172.64.35.116 among others, with 3 other IP addresses in total.

Mail Servers

codehandbook.dev uses two mail servers, mx01.mail.icloud.com and mx02.mail.icloud.com.

The mail server setup of codehandbook.dev matches that of other domains such as tangibles-book.com, topstuck.at, twoplayer.net and two others.

codehandbook.dev shares at least some of its mail servers with other domains, such as kingfisher-cottage.com and arthurrudy.com.

Hosts with 6 IP addresses each:

mx01.mail.icloud.com resolves to 17.42.251.62, 17.56.9.31 and 17.57.152.5 among others, with 3 other IP addresses in total.

mx02.mail.icloud.com resolves to 17.42.251.62, 17.56.9.31 and 17.57.152.5 among others, with 3 other IP addresses in total.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.42.251.62 IP addresses.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.56.9.31 IP addresses.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.57.152.5 IP addresses.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.57.154.33 IP addresses.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.57.155.25 IP addresses.

mx01.mail.icloud.com along with mx02.mail.icloud.com each resolve to 17.57.156.30 IP addresses.

codehandbook.dev - robtex.com