`learnspherebooks.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:a0e1^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:5994^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.89.148^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.160.225^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alexa.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26d7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alexa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alexa.ns.cloudflare.com`
		A	108.162.194.215^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexa.ns.cloudflare.com`
		A	162.159.38.215^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexa.ns.cloudflare.com`
		A	172.64.34.215^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alexa.ns.cloudflare.com`
NS	`lou.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bc7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lou.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lou.ns.cloudflare.com`
		A	108.162.193.199^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	172.64.33.199^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	173.245.59.199^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽³⁴⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁸⁹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.89.148, 172.67.160.225
		IPv6	2606:4700:3036::ac43:a0e1, 2606:4700:3037::6815:5994
SOA	`alexa.ns.cloudflare.com`dns@cloudflare.com serial=2396374405

`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=1774389407

Same first word

learnspherebooks.com

DNS History

9 records (9 active, 0 former)

●NSalexa.ns.cloudflare.com2026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●NSlou.ns.cloudflare.com2026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●MXroute1.mx.cloudflare.net2026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●MXroute2.mx.cloudflare.net2026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●MXroute3.mx.cloudflare.net2026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●A104.21.89.1482026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●A172.67.160.2252026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●A2606:4700:3036::ac43:a0e12026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

●A2606:4700:3037::6815:59942026-03-20 → 2026-03-24 · 2 obs

● 2026-03-20 23:54:46
● 2026-03-24 22:17:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
learnspherebooks.com	lou.ns.cloudflare.com, alexa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.199

NS records: lou.ns.cloudflare.com, alexa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learnspherebooks.com (unsigned zone)

⏱️ Timing

Total: 191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.89.148, 172.67.160.225`
AAAA	2	`2606:4700:3037::6815:5994, 2606:4700:3036::ac43:a0e1`
NS	2	`alexa.ns.cloudflare.com, lou.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 21), route3.mx.cloudflare.net (pri: 34)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alexa.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

learnspherebooks.com maps to four IP numbers: 2606:4700:3036::ac43:a0e1, 2606:4700:3037::6815:5994, 104.21.89.148 and 172.67.160.225.

other host names include theartofjoomla.com, www.imajweb.com, degastouder.com, su.is and mdoomngnidelo.store; they share IP numbers with learnspherebooks.com.

Name Servers

Two name servers alexa.ns.cloudflare.com and lou.ns.cloudflare.com handle the delegation for learnspherebooks.com.

learnspherebooks.com shares the same name server setup as other domains, for instance platten-paradies.com, mediahiveonline.com, oasismaison.com, weindepot24.com and alpineverde.com.

learnspherebooks.com at least partially shares name servers with other domains, for instance vfdbank.com, pwower.com, send-mrivate-message.pages.dev, sunwinnz.com and zgfulicaipiao3dzou(0x73686974)u.cn.

These name servers are commonly used alongside yisroel.ns.cloudflare.com.

Six IP addresses per host:

alexa.ns.cloudflare.com points to 2606:4700:50::a29f:26d7, 2803:f800:50::6ca2:c2d7, 2a06:98c1:50::ac40:22d7, 108.162.194.215, 162.159.38.215 and 172.64.34.215; lou.ns.cloudflare.com points to 2606:4700:58::adf5:3bc7, 2803:f800:50::6ca2:c1c7, 2a06:98c1:50::ac40:21c7, 108.162.193.199, 172.64.33.199 and 173.245.59.199

Mail Servers

Three mail servers handle learnspherebooks.com: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

learnspherebooks.com shares at least partially some mail servers with other domains, for instance 1lordfilm.one, clarkinweb.com, davinian.com, (0x736578)movies.(0x787878) and vanpolbeheer.nl.

Host names with six IP numbers:

- route1.mx.cloudflare.net points to 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13

- route2.mx.cloudflare.net points to 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19

- route3.mx.cloudflare.net points to 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25

learnspherebooks.com - robtex.com