`bookboon-learning.com`

DNSSEC	⚠️ Not signed
NS	`ns-774.awsdns-32.net` ⭐
		A	2600:9000:5303:600::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-774.awsdns-32.net`
		A	205.251.195.6^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-774.awsdns-32.net`
NS	`ns-1251.awsdns-28.org`
		A	2600:9000:5304:e300::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1251.awsdns-28.org`
		A	205.251.196.227^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1251.awsdns-28.org`
NS	`ns-1678.awsdns-17.co.uk`
		A	2600:9000:5306:8e00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1678.awsdns-17.co.uk`
		A	205.251.198.142^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1678.awsdns-17.co.uk`
NS	`ns-208.awsdns-26.com`
		A	2600:9000:5300:d000::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-208.awsdns-26.com`
		A	205.251.192.208^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-208.awsdns-26.com`
SOA	`ns-774.awsdns-32.net`awsdns-hostmaster@amazon.com serial=1

`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=1774631462

Same first word

bookboon-learning.com

DNS History

4 records (4 active, 0 former)

●NSns-1251.awsdns-28.org2026-02-22 → 2026-03-27 · 2 obs

● 2026-02-22 11:28:06
● 2026-03-27 17:27:06

●NSns-1678.awsdns-17.co.uk2026-02-22 → 2026-03-27 · 2 obs

● 2026-02-22 11:28:06
● 2026-03-27 17:27:06

●NSns-208.awsdns-26.com2026-02-22 → 2026-03-27 · 2 obs

● 2026-02-22 11:28:06
● 2026-03-27 17:27:06

●NSns-774.awsdns-32.net2026-02-22 → 2026-03-27 · 2 obs

● 2026-02-22 11:28:06
● 2026-03-27 17:27:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, j.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net...	-
bookboon-learning.com	ns-208.awsdns-26.com, ns-774.awsdns-32.net, ns-1678.awsdns-17.co.uk, ns-1251.awsdns-28.org	1 record

✅ Authoritative Response

Server:205.251.192.208

NS records: ns-208.awsdns-26.com, ns-774.awsdns-32.net, ns-1678.awsdns-17.co.uk, ns-1251.awsdns-28.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookboon-learning.com (unsigned zone)

⏱️ Timing

Total: 2040ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1251.awsdns-28.org, ns-1678.awsdns-17.co.uk...`
SOA	1	`ns-774.awsdns-32.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-208.awsdns-26.com)

Analysis

Name Servers

bookboon-learning.com delegates to four name servers: ns-208.awsdns-26.com, ns-774.awsdns-32.net, ns-1251.awsdns-28.org and ns-1678.awsdns-17.co.uk.

bookboon-learning.com at least partially shares name servers with other domains, for instance avonvibe.com, selme.jp, amysmartgirls.info, performanceupgrade.net and mobilbahis1099.com.

Host names with two IP numbers: ns-208.awsdns-26.com points to 2600:9000:5300:d000::1 and 205.251.192.208; ns-774.awsdns-32.net points to 2600:9000:5303:600::1 and 205.251.195.6; ns-1251.awsdns-28.org points to 2600:9000:5304:e300::1 and 205.251.196.227; ns-1678.awsdns-17.co.uk points to 2600:9000:5306:8e00::1 and 205.251.198.142.

bookboon-learning.com - robtex.com