`lock-book.com`

DNSSEC	⚠️ Not signed
A	3.77.104.169^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
A	3.124.147.94^{🇩🇪 Amazon3.124.0.0/14 EC2 FRA prefix}
A	35.159.8.86^{🇩🇪 Amazon35.156.0.0/14 EC2 FRA prefix}
NS	`ns-1471.awsdns-55.org` ⭐
		A	2600:9000:5305:bf00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1471.awsdns-55.org`
		A	205.251.197.191^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1471.awsdns-55.org`
NS	`ns-1003.awsdns-61.net`
		A	2600:9000:5303:eb00::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-1003.awsdns-61.net`
		A	205.251.195.235^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-1003.awsdns-61.net`
NS	`ns-1889.awsdns-44.co.uk`
		A	2600:9000:5307:6100::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1889.awsdns-44.co.uk`
		A	205.251.199.97^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1889.awsdns-44.co.uk`
NS	`ns-476.awsdns-59.com`
		A	2600:9000:5301:dc00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-476.awsdns-59.com`
		A	205.251.193.220^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-476.awsdns-59.com`
MX	`lockbook-com01b.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::1^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00401.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::f^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db7pr03cu00507.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am3pr04cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.25^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db8pr02cu00101.inbound.protection.outlook.com`
		A	52.101.68.39^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db7pr03cu00607.inbound.protection.outlook.com`
		A	52.101.73.1^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am3pr04cu00501.inbound.protection.outlook.com`
TXT	`MS=ms37953016`
TXT	`google-site-verification=5VFeG7N7l4TaBLryemabo26pLeCny6D0mzCE5XtdgAU`
TXT	`google-site-verification=kWlfssbIywfWts0BRYeJy1_guroKh4NrS4HrFhxL3kY`
TXT	`hes=4bd7849855eb42541c82ed284d7b8803`
TXT	`miro-verification=d18d5f420077b42f94f8076f051828fd6457f6b7`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns-1471.awsdns-55.org`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=1771291435

Subdomains

android.lock-book.com

www.lock-book.com

Same first word

lock-book.de

lock-book.com

DNS History

22 records (8 active, 14 former)

●NSns-1003.awsdns-61.net2026-02-17 → 2026-02-28 · 3 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
● 2026-02-28 21:59:30

●NSns-1471.awsdns-55.org2026-02-17 → 2026-02-28 · 3 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
● 2026-02-28 21:59:30

●NSns-1889.awsdns-44.co.uk2026-02-17 → 2026-02-28 · 3 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
● 2026-02-28 21:59:30

●NSns-476.awsdns-59.com2026-02-17 → 2026-02-28 · 3 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
● 2026-02-28 21:59:30

○NSns1.hans.hosteurope.de2017-08-11 → 2017-08-11 · 3 obs

● 2017-08-11 00:24:36
○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

○NSns2.hans.hosteurope.de2017-08-11 → 2017-08-11 · 3 obs

● 2017-08-11 00:24:36
○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

●MXlockbook-com01b.mail.protection.outlook.com2026-02-17 → 2026-02-28 · 3 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
● 2026-02-28 21:59:30

○MXmx0.lock-book.com2017-08-11 → 2017-08-11 · 3 obs

● 2017-08-11 00:24:36
○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

○A2a01:488:42:1000:57e6:28e3:38:44be2017-08-11 → 2017-08-11 · 3 obs

● 2017-08-11 00:24:36
○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

●A3.124.147.942026-02-28 → 2026-02-28 · 3 obs

○ 2026-02-25 11:51:14
● 2026-02-28 21:59:26
● 2026-02-28 21:59:30

○A3.75.164.1302026-02-17 → 2026-02-28 · 2 obs

○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

○A3.75.98.2332026-02-17 → 2026-02-17 · 4 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
○ 2026-02-25 11:51:14
○ 2026-02-28 21:59:30

●A3.77.104.1692026-02-28 → 2026-02-28 · 3 obs

○ 2026-02-25 11:51:14
● 2026-02-28 21:59:26
● 2026-02-28 21:59:30

○A35.156.141.742026-02-17 → 2026-02-17 · 4 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
○ 2026-02-25 11:51:14
○ 2026-02-28 21:59:30

○A35.157.55.422026-02-17 → 2026-02-17 · 4 obs

○ 2017-08-11 00:24:36
● 2026-02-17 17:34:42
○ 2026-02-25 11:51:14
○ 2026-02-28 21:59:30

●A35.159.8.862026-02-28 → 2026-02-28 · 3 obs

○ 2026-02-25 11:51:14
● 2026-02-28 21:59:26
● 2026-02-28 21:59:30

○A54.93.138.1182026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-17 17:34:42
● 2026-02-25 11:51:14
○ 2026-02-28 21:59:26
○ 2026-02-28 21:59:30

○A63.179.226.2382026-02-17 → 2026-02-28 · 2 obs

○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

○A63.181.119.1502026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-17 17:34:42
● 2026-02-25 11:51:14
○ 2026-02-28 21:59:26
○ 2026-02-28 21:59:30

○A63.182.94.102026-02-17 → 2026-02-28 · 2 obs

○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

○A63.183.37.672026-02-25 → 2026-02-25 · 4 obs

○ 2026-02-17 17:34:42
● 2026-02-25 11:51:14
○ 2026-02-28 21:59:26
○ 2026-02-28 21:59:30

○A87.230.40.2272017-08-11 → 2017-08-11 · 3 obs

● 2017-08-11 00:24:36
○ 2026-02-17 17:34:42
○ 2026-02-28 21:59:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net...	-
lock-book.com	ns-476.awsdns-59.com, ns-1003.awsdns-61.net, ns-1889.awsdns-44.co.uk, ns-1471.awsdns-55.org	1 record

✅ Authoritative Response

Server: 205.251.197.191

NS records: ns-476.awsdns-59.com, ns-1003.awsdns-61.net, ns-1889.awsdns-44.co.uk, ns-1471.awsdns-55.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1412ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`3.77.104.169, 3.124.147.94...`
NS	4	`ns-1003.awsdns-61.net, ns-1471.awsdns-55.org...`
MX	1	`lockbook-com01b.mail.protection.outlook.`
TXT	6	`MS=ms37953016, google-site-verification=5VFeG7N7l4TaBLr...`
SOA	1	`ns-1471.awsdns-55.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-476.awsdns-59.com)

Analysis

Hierarchy

lock-book.com is a parent of android.lock-book.com and www.lock-book.com.

IP Addresses

lock-book.com points to three IPs: 3.77.104.169, 3.124.147.94 and 35.159.8.86.

Other host names, for instance ec2-35-159-8-86.eu-central-1.compute.amazonaws.com, share IP numbers with lock-book.com.

Name Servers

lock-book.com is delegated to four name servers: ns-476.awsdns-59.com, ns-1003.awsdns-61.net, ns-1471.awsdns-55.org and ns-1889.awsdns-44.co.uk.

lock-book.com at least partially shares name servers with other domains, for instance arege.net, cemaco.com.br, mhwollongong.com.au, ddd34g4rq40m4.cloudfront.net and super-prof.nl.

these name servers are commonly used alongside ns-1638.awsdns-12.co.uk.

Host names with two IP numbers:

ns-476.awsdns-59.com points to 2600:9000:5301:dc00::1 and 205.251.193.220; ns-1003.awsdns-61.net points to 2600:9000:5303:eb00::1 and 205.251.195.235; ns-1471.awsdns-55.org points to 2600:9000:5305:bf00::1 and 205.251.197.191; ns-1889.awsdns-44.co.uk points to 2600:9000:5307:6100::1 and 205.251.199.97.

Mail Servers

lock-book.com is handled by a single mail server, lockbook-com01b.mail.protection.outlook.com.

Host lockbook-com01b.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::1, 2a01:111:f403:ca04::f, 2a01:111:f403:ca09::, 2a01:111:f403:ca09::6, 52.101.68.8, 52.101.68.25, 52.101.68.39 and 52.101.73.1.

lock-book.com - robtex.com

lock-book.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`lock-book.com`

`com`