`security-assistance.nl`

DNSSEC	🔒 Signed (DS record present)
A	81.169.250.4^{🇩🇪 STRATO81.169.128.0/17 AG}
		PTR	`h2927370.stratoserver.net`
NS	`shades17.rzone.de` ⭐
		A	2607:f1c0:fe:53:185:132:34:144^{🇺🇸 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	`shades17.rzone.de`
		A	185.132.34.144^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`shades17.rzone.de`
NS	`docks20.rzone.de`
		A	2001:8d8:fe:53:5747:2a74:d:20^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`docks20.rzone.de`
		A	217.160.80.147^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`docks20.rzone.de`
MX	`security-assistance.nl` ⭐ 🔒
		A	81.169.250.4^{🇩🇪 STRATO81.169.128.0/17 AG}
			PTR	`h2927370.stratoserver.net`
SOA	`shades17.rzone.de`hostmaster@strato-rz.de 2021-05-28 #76

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-05-01 03:00:02 +0000 (EPOCH 1777604402)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-05-01 #5

MX for

security-assistance.nl

Same first word

security-assistance.nl

DNS History

13 records (4 active, 9 former)

●NSdocks20.rzone.de2026-05-01 → 2026-05-01 · 2 obs

○ 2020-01-19 17:14:14
● 2026-05-01 03:20:56

○NSns1.metaregistrar.nl2015-07-08 → 2020-01-19 · 3 obs

● 2015-07-08 12:50:02
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

○NSns2.metaregistrar.nl2015-07-08 → 2020-01-19 · 3 obs

● 2015-07-08 12:50:02
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

●NSshades17.rzone.de2026-05-01 → 2026-05-01 · 2 obs

○ 2020-01-19 17:14:14
● 2026-05-01 03:20:56

○MXmailfilter1.mijndomein.nl2015-07-08 → 2017-03-23 · 4 obs

● 2015-07-08 12:50:02
● 2017-03-23 10:37:56
○ 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

○MXmailfilter1b.mijndomein.nl2020-01-19 → 2020-01-19 · 3 obs

○ 2017-03-23 10:37:56
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

○MXmailfilter2.mijndomein.nl2015-07-08 → 2017-03-23 · 4 obs

● 2015-07-08 12:50:02
● 2017-03-23 10:37:56
○ 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

○MXmailfilter2b.mijndomein.nl2020-01-19 → 2020-01-19 · 3 obs

○ 2017-03-23 10:37:56
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

●MXsecurity-assistance.nl2026-05-01 → 2026-05-01 · 2 obs

○ 2020-01-19 17:14:14
● 2026-05-01 03:20:56

○A188.93.150.672015-07-08 → 2017-03-23 · 4 obs

● 2015-07-08 12:50:02
● 2017-03-23 10:37:56
○ 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

○A2a05:d018:964:c0b:ca65:7773:2dd7:d9bd2020-01-19 → 2020-01-19 · 3 obs

○ 2017-03-23 10:37:56
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

●A81.169.250.42026-05-01 → 2026-05-01 · 2 obs

○ 2020-01-19 17:14:14
● 2026-05-01 03:20:56

○A86.85.32.1662020-01-19 → 2020-01-19 · 3 obs

○ 2017-03-23 10:37:56
● 2020-01-19 17:14:14
○ 2026-05-01 03:20:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
security-assistance.nl	docks20.rzone.de, shades17.rzone.de	-

✅ Authoritative Response

Server:217.160.80.147

NS records: docks20.rzone.de, shades17.rzone.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 550ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.169.250.4`
NS	2	`shades17.rzone.de, docks20.rzone.de`
MX	1	`security-assistance.nl (pri: 10)`
SOA	1	`shades17.rzone.de hostmaster.strato-rz.d`

Analysis

Mail Server Role

security-assistance.nl serves as the mail server for security-assistance.nl.

IP Addresses

security-assistance.nl points to a single IP number: 81.169.250.4.

Other host names, for instance h2927370.stratoserver.net, share IP numbers with security-assistance.nl.

Name Servers

Delegation for security-assistance.nl rests with two name servers, docks20.rzone.de and shades17.rzone.de.

security-assistance.nl shares the same name server setup as other domains, including svhinterimadvies.nl, w8n.de, connyundkurt.de, giesendorf.de and tanay.nl.

security-assistance.nl at least partially shares name servers with other domains, for instance taunushof.de, alcagi.nl, parkonomic.com, pi-pt.com and ys030.nl.

These name servers are commonly used together with the name servers shades07.rzone.de, shades01.rzone.de, shades20.rzone.de, docks06.rzone.de, docks01.rzone.de, docks15.rzone.de, shades05.rzone.de, shades15.rzone.de, shades12.rzone.de and shades10.rzone.de.

Host names with two IP numbers: docks20.rzone.de points to 2001:8d8:fe:53:5747:2a74:d:20 and 217.160.80.147; shades17.rzone.de points to 2607:f1c0:fe:53:185:132:34:144 and 185.132.34.144.

Mail Servers

A single mail server handles security-assistance.nl.

security-assistance.nl points to a single IP: 81.169.250.4.

security-assistance.nl - robtex.com