`lehrbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:e10^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:85c0^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.14.16^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.133.192^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`athena.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a48^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c048^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`athena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2048^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`athena.ns.cloudflare.com`
		A	108.162.192.72^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	172.64.32.72^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
		A	173.245.58.72^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`athena.ns.cloudflare.com`
NS	`evan.ns.cloudflare.com`
		A	2606:4700:58::adf5:3ba5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`evan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`evan.ns.cloudflare.com`
		A	108.162.193.165^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evan.ns.cloudflare.com`
		A	172.64.33.165^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evan.ns.cloudflare.com`
		A	173.245.59.165^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evan.ns.cloudflare.com`
MX	`lehrbook-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c801::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr02cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch5pr02cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch0pr04cu00603.inbound.protection.outlook.com`
		A	2a01:111:f403:f908::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn1pr04cu00101.inbound.protection.outlook.com`
		A	52.101.8.34^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm2pr04cu00102.inbound.protection.outlook.com`
		A	52.101.41.22^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00406.inbound.protection.outlook.com`
		A	52.101.41.58^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr02cu00102.inbound.protection.outlook.com`
		A	52.101.194.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch4pr04cu00104.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.14.16, 172.67.133.192
		IPv6 hints	2606:4700:3035::6815:e10, 2606:4700:3036::ac43:85c0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=106, name=cloudflare-ech.com
SOA	`athena.ns.cloudflare.com`dns@cloudflare.com serial=2411406645

`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=1786166239

Same first word

lehrbook.com

Similar names

herblook.com

brokeloh.de

khelobro.online

DNS History

17 records (7 active, 10 former)

●NSathena.ns.cloudflare.com2026-04-14 → 2026-08-08 · 3 obs

○ 2016-12-16 03:57:22
● 2026-04-14 03:23:12
● 2026-08-08 05:18:16

●NSevan.ns.cloudflare.com2026-04-14 → 2026-08-08 · 3 obs

○ 2016-12-16 03:57:22
● 2026-04-14 03:23:12
● 2026-08-08 05:18:16

○NSns37.domaincontrol.com2016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 03:57:22
○ 2026-04-14 03:23:12
○ 2026-08-08 05:18:16

○NSns38.domaincontrol.com2016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 03:57:22
○ 2026-04-14 03:23:12
○ 2026-08-08 05:18:16

●MXlehrbook-com.mail.protection.outlook.com2026-04-14 → 2026-08-08 · 3 obs

○ 2016-12-16 03:57:22
● 2026-04-14 03:23:12
● 2026-08-08 05:18:16

○MXmx.zoho.com2016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 03:57:22
○ 2026-04-14 03:23:12
○ 2026-08-08 05:18:16

○MXmx2.zoho.com2016-12-16 → 2016-12-16 · 3 obs

● 2016-12-16 03:57:22
○ 2026-04-14 03:23:12
○ 2026-08-08 05:18:16

●A104.21.14.162026-04-14 → 2026-08-08 · 5 obs

● 2026-04-14 03:23:12
○ 2026-04-21 21:53:28
● 2026-04-27 05:43:04
○ 2026-07-07 12:42:24
● 2026-08-08 05:18:16

●A172.67.133.1922026-04-14 → 2026-08-08 · 5 obs

● 2026-04-14 03:23:12
○ 2026-04-21 21:53:28
● 2026-04-27 05:43:04
○ 2026-07-07 12:42:24
● 2026-08-08 05:18:16

○A188.114.96.02026-04-21 → 2026-07-07 · 5 obs

○ 2026-04-14 03:23:12
● 2026-04-21 21:53:28
○ 2026-04-27 05:43:04
● 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

○A188.114.97.02026-04-21 → 2026-07-07 · 5 obs

○ 2026-04-14 03:23:12
● 2026-04-21 21:53:28
○ 2026-04-27 05:43:04
● 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

○A2606:4700:3031::6815:e102026-04-14 → 2026-04-27 · 5 obs

● 2026-04-14 03:23:12
○ 2026-04-21 21:53:28
● 2026-04-27 05:43:04
○ 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

●A2606:4700:3035::6815:e102026-08-08 → 2026-08-08 · 2 obs

○ 2026-07-07 12:42:24
● 2026-08-08 05:18:16

○A2606:4700:3035::ac43:85c02026-04-14 → 2026-04-27 · 5 obs

● 2026-04-14 03:23:12
○ 2026-04-21 21:53:28
● 2026-04-27 05:43:04
○ 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

●A2606:4700:3036::ac43:85c02026-08-08 → 2026-08-08 · 2 obs

○ 2026-07-07 12:42:24
● 2026-08-08 05:18:16

○A2a06:98c1:3120::2026-04-21 → 2026-07-07 · 5 obs

○ 2026-04-14 03:23:12
● 2026-04-21 21:53:28
○ 2026-04-27 05:43:04
● 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

○A2a06:98c1:3121::2026-04-21 → 2026-07-07 · 5 obs

○ 2026-04-14 03:23:12
● 2026-04-21 21:53:28
○ 2026-04-27 05:43:04
● 2026-07-07 12:42:24
○ 2026-08-08 05:18:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net...	-
lehrbook.com	athena.ns.cloudflare.com, evan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.165

NS records: athena.ns.cloudflare.com, evan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lehrbook.com (unsigned zone)

⏱️ Timing

Total: 286ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.14.16, 172.67.133.192`
AAAA	2	`2606:4700:3035::6815:e10, 2606:4700:3036::ac43:85c0`
NS	2	`athena.ns.cloudflare.com, evan.ns.cloudflare.com`
MX	1	`lehrbook-com.mail.protection.outlook.com`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`athena.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

lehrbook.com directs to four IP numbers, which are 104.21.14.16, 172.67.133.192, 2606:4700:3035::6815:e10 and 2606:4700:3036::ac43:85c0.

Additional host names — peoplelife.ru, n-n.cat, www.majolinek.pl and two others — share IP numbers with lehrbook.com.

Name Servers

lehrbook.com has two authoritative name servers — athena.ns.cloudflare.com and evan.ns.cloudflare.com.

lehrbook.com shares its name server setup with other domains, including jelvix.dev, dusk.run, getyourbabymoving.com and two others.

The name servers of lehrbook.com overlap at least partially with those of other domains — among them m-brella.net, appartcloth.com, itpsysteme.de and two more.

These name servers commonly appear alongside the name servers kami.ns.cloudflare.com and rocco.ns.cloudflare.com.

Host names with 6 IP numbers:

athena.ns.cloudflare.com points to 108.162.192.72, 172.64.32.72, 173.245.58.72 and 3 other IP addresses.

evan.ns.cloudflare.com points to 108.162.193.165, 172.64.33.165, 173.245.59.165 and 3 other IP addresses.

Mail Servers

lehrbook.com has one mail server: lehrbook-com.mail.protection.outlook.com.

lehrbook-com.mail.protection.outlook.com points to 8 IP numbers: 52.101.8.34, 52.101.41.22, 52.101.41.58 and 5 other.

lehrbook.com - robtex.com

lehrbook.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`lehrbook.com`

`com`