proknowledge.nl - dns.ninja

`proknowledge.nl`

DNSSEC	🔒 Signed (DS record present)
A	85.214.70.213^{🇩🇪 STRATO85.214.0.0/15 AG}
		PTR	`proknowledge.nl`
NS	`ns3.stratoserver.net` ⭐
		A	2607:f1c0:fe:53:185:132:34:159^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns3.stratoserver.net`
		A	185.132.34.159^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns3.stratoserver.net`
NS	`ns4.stratoserver.net`
		A	2001:8d8:fe:53:5747:2a74:d:32^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
		A	217.160.80.159^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
MX	`relay.rzone.de`⁽¹⁰⁰⁾
		A	81.169.145.96^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`relay.rzone.de`
TXT	`v=spf1 include:_spf.protonmail.ch include:sender.zohoinvoice.com`
TXT	`protonmail-verification=eff66dc620608fce33353938d4558401f6a8ebb6`
SOA	`ns3.stratoserver.net`hostmaster@strato-rz.de 2020-05-18 #18

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-06-23 13:30:01 +0000 (EPOCH 1782221401)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-06-23 #27

PTR for

213.70.214.85.in-addr.arpa

Same first word

proknowledge.nl

Similar names

knowlegedrop.xyz

DNS History

15 records (6 active, 9 former)

○NSns0.transip.net2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○NSns1.transip.nl2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○NSns2.transip.eu2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

●NSns3.stratoserver.net2026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

●NSns4.stratoserver.net2026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

○MXalt1.aspmx.l.google.com2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○MXalt2.aspmx.l.google.com2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○MXaspmx.l.google.com2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○MXaspmx2.googlemail.com2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

○MXaspmx3.googlemail.com2015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

●MXmail.protonmail.ch2026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

●MXmailsec.protonmail.ch2026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

●MXrelay.rzone.de2026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

○A149.210.141.172015-08-19 → 2017-03-27 · 4 obs

● 2015-08-19 03:19:44
● 2017-03-27 20:31:00
○ 2026-02-17 18:21:40
○ 2026-06-23 14:40:50

●A85.214.70.2132026-02-17 → 2026-06-23 · 3 obs

○ 2017-03-27 20:31:00
● 2026-02-17 18:21:40
● 2026-06-23 14:40:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
proknowledge.nl	ns3.stratoserver.net, ns4.stratoserver.net	-

✅ Authoritative Response

Server:217.160.80.159

NS records: ns3.stratoserver.net, ns4.stratoserver.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3003ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`85.214.70.213`
NS	2	`ns3.stratoserver.net, ns4.stratoserver.net`
MX	3	`relay.rzone.de (pri: 100), mailsec.protonmail.ch (pri: 20)...`
TXT	2	`protonmail-verification=eff66dc620608fce, v=spf1 include:_spf.protonmail.ch includ`
SOA	1	`ns3.stratoserver.net hostmaster.strato-r`

Analysis

IP Addresses

proknowledge.nl resolves to one IP address: 85.214.70.213.

Other host names, such as proknowledge-services.com, share IP numbers with proknowledge.nl.

Name Servers

proknowledge.nl is delegated to two name servers: ns3.stratoserver.net and ns4.stratoserver.net.

proknowledge.nl uses the same name servers as several other domains — among them korsmann.com, dechert-engineering.com, tunnel.de and two more.

ns3.stratoserver.net and ns4.stratoserver.net each resolve to two IP addresses: ns3.stratoserver.net points to 185.132.34.159 and 2607:f1c0:fe:53:185:132:34:159, while ns4.stratoserver.net points to 217.160.80.159 and 2001:8d8:fe:53:5747:2a74:d:32.

Mail Servers

proknowledge.nl is handled by three mail servers: mail.protonmail.ch, mailsec.protonmail.ch and relay.rzone.de.

proknowledge.nl has at least partial mail server overlap with other domains such as wnas.nl, sendme.email, grmn.nl and two more.

These mail servers frequently appear alongside the mail servers aspmx.l.google.com and alt1.aspmx.l.google.com.

Hostnames that resolve to three IP addresses:

mail.protonmail.ch points to 176.119.200.128, 185.70.42.128 and 185.205.70.128.

mailsec.protonmail.ch points to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

Hosts with just one IP address:

relay.rzone.de points to 81.169.145.96.