`bookheights.click`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:e49^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:9e2c^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.14.73^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.158.44^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hugh.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c175^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hugh.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2175^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hugh.ns.cloudflare.com`
		A	108.162.193.117^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	172.64.33.117^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
		A	173.245.59.117^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hugh.ns.cloudflare.com`
NS	`nena.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nena.ns.cloudflare.com`
		A	108.162.194.161^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	162.159.38.161^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
		A	172.64.34.161^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nena.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.14.73, 172.67.158.44
		IPv6 hints	2606:4700:3033::6815:e49, 2606:4700:3037::ac43:9e2c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=12, name=cloudflare-ech.com
SOA	`hugh.ns.cloudflare.com`dns@cloudflare.com serial=2409975392

`click`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns01.trs-dns.com` ⭐
	NS	`ns.trs-dns.com`
	NS	`ns01.trs-dns.net`
	NS	`ns10.trs-dns.info`
	NS	`ns10.trs-dns.org`
	SOA	`ns.trs-dns.com`trs-ops@tucows.com serial=1785245444

⚠️ On DNS blocklist: tif

Same first word

bookheights.click

DNS History

10 records (6 active, 4 former)

●NShugh.ns.cloudflare.com2026-07-26 → 2026-07-28 · 2 obs

● 2026-07-26 08:27:16
● 2026-07-28 13:36:06

●NSnena.ns.cloudflare.com2026-07-26 → 2026-07-28 · 2 obs

● 2026-07-26 08:27:16
● 2026-07-28 13:36:06

●A104.21.14.732026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-26 08:27:16
● 2026-07-28 13:36:06

●A172.67.158.442026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-26 08:27:16
● 2026-07-28 13:36:06

○A188.114.96.02026-07-26 → 2026-07-26 · 2 obs

● 2026-07-26 08:27:16
○ 2026-07-28 13:36:06

○A188.114.97.02026-07-26 → 2026-07-26 · 2 obs

● 2026-07-26 08:27:16
○ 2026-07-28 13:36:06

●A2606:4700:3033::6815:e492026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-26 08:27:16
● 2026-07-28 13:36:06

●A2606:4700:3037::ac43:9e2c2026-07-28 → 2026-07-28 · 2 obs

○ 2026-07-26 08:27:16
● 2026-07-28 13:36:06

○A2a06:98c1:3120::2026-07-26 → 2026-07-26 · 2 obs

● 2026-07-26 08:27:16
○ 2026-07-28 13:36:06

○A2a06:98c1:3121::2026-07-26 → 2026-07-26 · 2 obs

● 2026-07-26 08:27:16
○ 2026-07-28 13:36:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
click	ns10.trs-dns.info, ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org	8 records
bookheights.click	hugh.ns.cloudflare.com, nena.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.161

NS records: hugh.ns.cloudflare.com, nena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookheights.click (unsigned zone)

⏱️ Timing

Total: 503ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.158.44, 104.21.14.73`
AAAA	2	`2606:4700:3037::ac43:9e2c, 2606:4700:3033::6815:e49`
NS	2	`hugh.ns.cloudflare.com, nena.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hugh.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns10.trs-dns.info, ns10.trs-dns.org, ns01.trs-dns.net...)

Analysis

IP Addresses

bookheights.click points to the four IP addresses 104.21.14.73, 172.67.158.44, 2606:4700:3033::6815:e49 and 2606:4700:3037::ac43:9e2c.

Two other host names, along with www.wenxiancdc.com, zkfl6.cfd and udnpack.com, also share IP numbers with bookheights.click.

Name Servers

bookheights.click uses two name servers for its delegation: hugh.ns.cloudflare.com and nena.ns.cloudflare.com.

bookheights.click shares its NS records with other domains, for example thecourseempower.digital, coursealive.digital, execquesttraining.sbs and two others.

There is at least partial name server overlap between bookheights.click and other domains — hbtaz.com, apollos-muse.co.uk, sufc3g.co.uk and two more among them.

These name servers are routinely deployed together with the name servers harlan.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname hugh.ns.cloudflare.com directs to 108.162.193.117, 172.64.33.117 and 173.245.59.117 along with 3 other IP addresses.

Hostname nena.ns.cloudflare.com directs to 108.162.194.161, 162.159.38.161 and 172.64.34.161 along with 3 other IP addresses.

bookheights.click - robtex.com