`aprendizlibros.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:9ced^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:84b^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.8.75^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.156.237^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bristol.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:262f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c22f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bristol.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:222f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bristol.ns.cloudflare.com`
		A	108.162.194.47^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	162.159.38.47^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	172.64.34.47^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
NS	`valentin.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cce^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ce^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`valentin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ce^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`valentin.ns.cloudflare.com`
		A	108.162.195.206^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	162.159.44.206^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	172.64.35.206^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
MX	`mx10.mailspamprotection.com` ⭐
		A	34.149.79.66^{🇺🇸 Google34.148.0.0/14}
			PTR	`66.79.149.34.bc.googleusercontent.com`
MX	`mx20.mailspamprotection.com`⁽²⁰⁾
		A	34.120.156.61^{🇺🇸 Google34.120.0.0/14}
			PTR	`61.156.120.34.bc.googleusercontent.com`
MX	`mx30.mailspamprotection.com`⁽³⁰⁾
		A	34.111.121.216^{🇺🇸 Google34.108.0.0/14}
			PTR	`216.121.111.34.bc.googleusercontent.com`
TXT	`ca3-2bf2d6a4d5314bd8a6529bd51093f235`
TXT	`v=spf1 +a +mx +a:ns1.ams41.siteground.eu include:_spf.mailspamprotection.com ...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.8.75, 172.67.156.237
		IPv6	2606:4700:3031::ac43:9ced, 2606:4700:3035::6815:84b
SOA	`bristol.ns.cloudflare.com`dns@cloudflare.com serial=2396081437

`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=1771291435

DNS History

17 records (9 active, 8 former)

●NSbristol.ns.cloudflare.com2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

○NSdns1.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

○NSdns2.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

●NSvalentin.ns.cloudflare.com2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

○MXeforward1.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

○MXeforward2.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

○MXeforward3.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

○MXeforward4.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

○MXeforward5.registrar-servers.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

●MXmx10.mailspamprotection.com2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

●MXmx20.mailspamprotection.com2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

●MXmx30.mailspamprotection.com2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

●A104.21.8.752026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

○A162.255.119.1252020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 22:54:10
○ 2026-03-09 07:58:26
○ 2026-03-09 07:58:28

●A172.67.156.2372026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

●A2606:4700:3031::ac43:9ced2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

●A2606:4700:3035::6815:84b2026-03-09 → 2026-03-09 · 3 obs

○ 2020-01-20 22:54:10
● 2026-03-09 07:58:26
● 2026-03-09 07:58:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
aprendizlibros.com	bristol.ns.cloudflare.com, valentin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.194.47

NS records: bristol.ns.cloudflare.com, valentin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for aprendizlibros.com (unsigned zone)

⏱️ Timing

Total: 91ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.156.237, 104.21.8.75`
AAAA	2	`2606:4700:3035::6815:84b, 2606:4700:3031::ac43:9ced`
NS	2	`bristol.ns.cloudflare.com, valentin.ns.cloudflare.com`
MX	3	`mx10.mailspamprotection.com (pri: 10), mx20.mailspamprotection.com (pri: 20)...`
TXT	2	`ca3-2bf2d6a4d5314bd8a6529bd51093f235, v=spf1 +a +mx +a:ns1.ams41.siteground.eu`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bristol.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Four IP numbers are pointed to by aprendizlibros.com: 2606:4700:3031::ac43:9ced, 2606:4700:3035::6815:84b, 104.21.8.75 and 172.67.156.237.

other host names including lechenie-alko-narko.ru, trendholding.sk, fzvalve.com, imd.me and joannvillarreal.com share IP numbers with aprendizlibros.com.

Name Servers

aprendizlibros.com is delegated to two name servers bristol.ns.cloudflare.com and valentin.ns.cloudflare.com.

aprendizlibros.com shares the same name server setup as other domains, for instance memlist.se, aprendizfinanciero.com, iabtrends.cl, oplom.com and m0n1c4.com.

aprendizlibros.com at least partially shares name servers with other domains, for instance bets20.org, goedkoopreizen.org, 11maobf.com, bigfree(0x706f726e)movie.com and standrews-episcopal.net.

These name servers are commonly used alongside katelyn.ns.cloudflare.com and dakota.ns.cloudflare.com.

Host names with six IP numbers:

Host name bristol.ns.cloudflare.com points to: 2606:4700:50::a29f:262f, 2803:f800:50::6ca2:c22f, 2a06:98c1:50::ac40:222f, 108.162.194.47, 162.159.38.47 and 172.64.34.47.

Host name valentin.ns.cloudflare.com points to: 2606:4700:58::a29f:2cce, 2803:f800:50::6ca2:c3ce, 2a06:98c1:50::ac40:23ce, 108.162.195.206, 162.159.44.206 and 172.64.35.206.

Mail Servers

aprendizlibros.com is handled by three mail servers: mx10.mailspamprotection.com, mx20.mailspamprotection.com and mx30.mailspamprotection.com.

aprendizlibros.com shares some mail servers with other domains, at least partially, for instance molecats.com, netleaseadvisor.com, tempodilibri.it, johnmaasbuilder.com and wpcdecatur.org.

Host names with one IP number: mx10.mailspamprotection.com points to 34.149.79.66; mx20.mailspamprotection.com points to 34.120.156.61; mx30.mailspamprotection.com points to 34.111.121.216.

aprendizlibros.com - robtex.com