challengelearning.com - dns.ninja

challengelearning.com

DNSSEC⚠️ Not signed
A2a01:238:20a:202:1169::🇩🇪 STRATO2a01:238:20a::/48 Strato AG
A81.169.145.169🇩🇪 STRATO81.169.144.0/22 AG
NSshades13.rzone.de ⭐
A2607:f1c0:fe:53:185:132:34:140🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRshades13.rzone.de
A185.132.34.140🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRshades13.rzone.de
NSdocks14.rzone.de
A2001:8d8:fe:53:5747:2a74:d:14🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRdocks14.rzone.de
A217.160.80.141🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRdocks14.rzone.de
MXsmtpin.rzone.de ⭐
A2a01:238:20a:202:50f0::1097🇩🇪 STRATO2a01:238:20a::/48 Strato AG
PTRsmtpin.rzone.de
A81.169.145.97🇩🇪 STRATO81.169.144.0/22 AG
PTRsmtpin.rzone.de
TXTMS=2AB1A74E20F07459A1EC08FDFAAD8737AEA9A680
SOAshades13.rzone.dehostmaster@strato-rz.de 2020-05-18 #34

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785105512

Same first word

challengelearning.nl
challengelearning.com
challengelearning.org

DNS History

10 records (5 active, 5 former)

20162017201820192020202120222023202420252026NSdocks14.rzone.deshades13.rzone.dens1.pansa.netns2.pansa.netns3.pansa.netMXsmtpin.rzone.deantispamcluster.protagonist.nlA2a01:238:20a:202:1169::81.169.145.16982.150.141.30
●NSdocks14.rzone.de2016-01-20 → 2026-07-26 · 3 obs
○ 2015-11-30 17:34:28
● 2016-01-20 06:18:16
● 2026-07-26 22:57:06
○NSns1.pansa.net2015-08-13 → 2015-11-30 · 4 obs
● 2015-08-13 19:05:58
● 2015-11-30 17:34:28
○ 2016-01-20 06:18:16
○ 2026-07-26 22:57:06
○NSns2.pansa.net2015-08-13 → 2015-11-30 · 4 obs
● 2015-08-13 19:05:58
● 2015-11-30 17:34:28
○ 2016-01-20 06:18:16
○ 2026-07-26 22:57:06
○NSns3.pansa.net2015-08-13 → 2015-11-30 · 4 obs
● 2015-08-13 19:05:58
● 2015-11-30 17:34:28
○ 2016-01-20 06:18:16
○ 2026-07-26 22:57:06
●NSshades13.rzone.de2016-01-20 → 2026-07-26 · 3 obs
○ 2015-11-30 17:34:28
● 2016-01-20 06:18:16
● 2026-07-26 22:57:06
○MXantispamcluster.protagonist.nl2015-08-13 → 2015-11-30 · 4 obs
● 2015-08-13 19:05:58
● 2015-11-30 17:34:28
○ 2016-01-20 06:18:16
○ 2026-07-26 22:57:06
●MXsmtpin.rzone.de2016-01-20 → 2026-07-26 · 3 obs
○ 2015-11-30 17:34:28
● 2016-01-20 06:18:16
● 2026-07-26 22:57:06
●A2a01:238:20a:202:1169::2016-01-20 → 2026-07-26 · 3 obs
○ 2015-11-30 17:34:28
● 2016-01-20 06:18:16
● 2026-07-26 22:57:06
●A81.169.145.1692016-01-20 → 2026-07-26 · 3 obs
○ 2015-11-30 17:34:28
● 2016-01-20 06:18:16
● 2026-07-26 22:57:06
○A82.150.141.302015-08-13 → 2015-11-30 · 4 obs
● 2015-08-13 19:05:58
● 2015-11-30 17:34:28
○ 2016-01-20 06:18:16
○ 2026-07-26 22:57:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...-
challengelearning.comshades13.rzone.de, docks14.rzone.de-

✅ Authoritative Response

Server:217.160.80.141

NS records: shades13.rzone.de, docks14.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for challengelearning.com (unsigned zone)

⏱️ Timing

Total: 820ms | Queries: -

📄 Records

TypeCountSample Data
A181.169.145.169
AAAA12a01:238:20a:202:1169::
NS2docks14.rzone.de, shades13.rzone.de
MX1smtpin.rzone.de (pri: 5)
TXT1MS=2AB1A74E20F07459A1EC08FDFAAD8737AEA9A
SOA1shades13.rzone.de hostmaster.strato-rz.d

Analysis

IP Addresses

challengelearning.com resolves to the IP addresses 81.169.145.169 and 2a01:238:20a:202:1169::

autohaus-moeller.de, gesundhaus.net, stor-ag.de and two other host names share IP numbers with challengelearning.com.

Name Servers

Two name servers handle the delegation for challengelearning.com: docks14.rzone.de and shades13.rzone.de.

challengelearning.com uses the same name servers as several other domains — among them stuip.nl, salevant.eu, promuc.net and two more.

challengelearning.com has at least partial name server overlap with other domains, such as bf-remagen.de, national-parks.de, screen-force.com and two others.

shades05.rzone.de, docks12.rzone.de and docks08.rzone.de — plus 7 other name servers — are commonly paired with these name servers.

docks14.rzone.de and shades13.rzone.de both carry two IP addresses. The A records for docks14.rzone.de are 217.160.80.141 and 2001:8d8:fe:53:5747:2a74:d:14; the A records for shades13.rzone.de are 185.132.34.140 and 2607:f1c0:fe:53:185:132:34:140.

Mail Servers

Mail for challengelearning.com is handled by a single mail server, smtpin.rzone.de.

challengelearning.com uses an identical mail server configuration to several other domains — among them grohe-online.de, eleusis.de, germanconstruct.eu and two more.

smtpin.rzone.de has two IP addresses: 81.169.145.97 and 2a01:238:20a:202:50f0::1097.