`claude-code-book.com`

DNSSEC	⚠️ Not signed
NS	`cheryl.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a53^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c053^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cheryl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2053^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cheryl.ns.cloudflare.com`
		A	108.162.192.83^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	172.64.32.83^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	173.245.58.83^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
NS	`simon.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`simon.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`simon.ns.cloudflare.com`
		A	108.162.193.232^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	172.64.33.232^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	173.245.59.232^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
SOA	`cheryl.ns.cloudflare.com`dns@cloudflare.com serial=2409465951

`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=1785703172

Same first word

claude-code-book.com

DNS History

6 records (2 active, 4 former)

●NScheryl.ns.cloudflare.com2026-06-22 → 2026-08-02 · 2 obs

● 2026-06-22 12:22:16
● 2026-08-02 20:39:50

●NSsimon.ns.cloudflare.com2026-06-22 → 2026-08-02 · 2 obs

● 2026-06-22 12:22:16
● 2026-08-02 20:39:50

○A104.21.94.662026-06-22 → 2026-06-22 · 3 obs

● 2026-06-22 12:22:16
○ 2026-07-23 22:59:34
○ 2026-08-02 20:39:50

○A172.67.220.1372026-06-22 → 2026-06-22 · 3 obs

● 2026-06-22 12:22:16
○ 2026-07-23 22:59:34
○ 2026-08-02 20:39:50

○A2606:4700:3033::ac43:dc892026-06-22 → 2026-06-22 · 3 obs

● 2026-06-22 12:22:16
○ 2026-07-23 22:59:34
○ 2026-08-02 20:39:50

○A2606:4700:3036::6815:5e422026-06-22 → 2026-06-22 · 3 obs

● 2026-06-22 12:22:16
○ 2026-07-23 22:59:34
○ 2026-08-02 20:39:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
claude-code-book.com	cheryl.ns.cloudflare.com, simon.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.83

NS records: cheryl.ns.cloudflare.com, simon.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for claude-code-book.com (unsigned zone)

⏱️ Timing

Total: 99ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`cheryl.ns.cloudflare.com, simon.ns.cloudflare.com`
SOA	1	`cheryl.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Name Servers

claude-code-book.com uses two name servers for its delegation: cheryl.ns.cloudflare.com and simon.ns.cloudflare.com.

claude-code-book.com shares its NS records with other domains, for example sac2.net, nbitek.com, anuncioscuba.com and two others.

The name servers of claude-code-book.com overlap at least partially with those of other domains — among them bdop.shop, candy.info, bandiera.com.br and two more.

These name servers commonly appear alongside the name servers logan.ns.cloudflare.com and lina.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname cheryl.ns.cloudflare.com directs to 108.162.192.83, 172.64.32.83 and 173.245.58.83 along with 3 other IP addresses.

Hostname simon.ns.cloudflare.com directs to 108.162.193.232, 172.64.33.232 and 173.245.59.232 along with 3 other IP addresses.

claude-code-book.com - robtex.com