koolsun.nl - robtex.com
koolsun.nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2a01:238:20a:202:1093::🇩🇪 STRATO2a01:238:20a::/48 Strato AG | ||||||
| PTR | w8d.rzone.de | ||||||
| A | 81.169.145.93🇩🇪 STRATO81.169.144.0/22 AG | ||||||
| NS | docks05.rzone.de ⭐ | ||||||
| A | 2001:8d8:fe:53:5747:2a74:d:5🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | docks05.rzone.de | ||||||
| A | 217.160.80.132🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | docks05.rzone.de | ||||||
| NS | shades02.rzone.de | ||||||
| A | 2607:f1c0:fe:53:185:132:34:129🇺🇸 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 | shades02.rzone.de | ||||||
| A | 185.132.34.129🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | shades02.rzone.de | ||||||
| MX | smtp.rzone.de ⭐ | ||||||
| A | 2a01:238:20a:202:50f0::2097🇩🇪 STRATO2a01:238:20a::/48 Strato AG | ||||||
| PTR | smtp.rzone.de | ||||||
| A | 81.169.145.98🇩🇪 STRATO81.169.144.0/22 AG | ||||||
| PTR | smtp.rzone.de | ||||||
| SOA | docks05.rzone.dehostmaster@strato-rz.de 2023-03-26 #13 | ||||||
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-04-16 17:00:01 +0000 (EPOCH 1776358801) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-04-16 #34 | ||||||
Same first word
Similar names
DNS History
10 records (5 active, 5 former)
●NSdocks05.rzone.de2026-03-26 → 2026-04-16 · 3 obs
● 2026-03-26 06:16:54
● 2026-04-16 18:03:02
○NSns19.axc.nl2018-07-21 → 2018-07-21 · 3 obs
○ 2026-03-26 06:16:54
○ 2026-04-16 18:03:02
○NSns20.axc.nl2018-07-21 → 2018-07-21 · 3 obs
○ 2026-03-26 06:16:54
○ 2026-04-16 18:03:02
●NSshades02.rzone.de2026-03-26 → 2026-04-16 · 3 obs
● 2026-03-26 06:16:54
● 2026-04-16 18:03:02
○MXmail.koolsun.nl2018-07-21 → 2018-07-21 · 3 obs
○ 2026-03-26 06:16:54
○ 2026-04-16 18:03:02
●MXsmtp.rzone.de2026-03-26 → 2026-04-16 · 3 obs
● 2026-03-26 06:16:54
● 2026-04-16 18:03:02
○A185.182.56.1042018-07-21 → 2018-07-21 · 3 obs
○ 2026-03-26 06:16:54
○ 2026-04-16 18:03:02
●A2a01:238:20a:202:1093::2026-03-26 → 2026-04-16 · 3 obs
● 2026-03-26 06:16:54
● 2026-04-16 18:03:02
○A2a0b:7280:100:0:40a:92ff:fe00:20a22018-07-21 → 2018-07-21 · 3 obs
○ 2026-03-26 06:16:54
○ 2026-04-16 18:03:02
●A81.169.145.932026-03-26 → 2026-04-16 · 3 obs
● 2026-03-26 06:16:54
● 2026-04-16 18:03:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns3.dns.nl, ns1.dns.nl, ns4.dns.nl | - |
| koolsun.nl | docks05.rzone.de, shades02.rzone.de | - |
✅ Authoritative Response
Server:185.132.34.129
NS records: docks05.rzone.de, shades02.rzone.de
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 710ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.169.145.93 |
| AAAA | 1 | 2a01:238:20a:202:1093:: |
| NS | 2 | shades02.rzone.de, docks05.rzone.de |
| MX | 1 | smtp.rzone.de (pri: 5) |
| SOA | 1 | docks05.rzone.de hostmaster.strato-rz.de |
Analysis
IP Addresses
koolsun.nl resolves to two IP numbers: 2a01:238:20a:202:1093:: and 81.169.145.93.
Other host names, for instance purity-records.de, navomedia.de, blintales.de, guantanamera.de and schleipen.com share IP numbers with koolsun.nl.
Name Servers
koolsun.nl has two name servers: docks05.rzone.de and shades02.rzone.de.
koolsun.nl shares the same name server setup as other domains, for example beam.deals, www.harenberg-immobilien.de, widerstand.digital, mindler.de and schaden-a.de.
koolsun.nl shares some name servers with other domains, for example woerden.accountants, katharinaschelling.com, xn--rel-dma.es, hellsangelsstuttgart.de and pupupin.nl.
these name servers are often used with docks16.rzone.de, docks06.rzone.de, docks11.rzone.de, shades03.rzone.de, shades12.rzone.de, shades18.rzone.de, shades13.rzone.de, docks17.rzone.de, shades05.rzone.de and shades16.rzone.de.
Host names with two IP numbers:
docks05.rzone.de points to: 2001:8d8:fe:53:5747:2a74:d:5 and 217.160.80.132; shades02.rzone.de points to: 2607:f1c0:fe:53:185:132:34:129 and 185.132.34.129.
Mail Servers
koolsun.nl is handled by a single mail server, smtp.rzone.de.
koolsun.nl shares the mail server setup with other domains, for example mx.52140376.xy.strato-hosting.eu, dliver.nl, savoyactivosreales.com, 53427970.xy.strato-hosting.eu and mx.52141095.xy.strato-hosting.eu.
smtp.rzone.de resolves to two IPs: 2a01:238:20a:202:50f0::2097 and 81.169.145.98.