ck-study.com - robtex.com

ck-study.com

DNSSEC⚠️ Not signed
A74.208.236.194🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.
PTR74-208-236-194.elastic-ssl.ui-r.com
NSns1039.ui-dns.biz ⭐
A2001:8d8:fe:53:0:d9a0:5127:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1039.ui-dns.biz
A217.160.81.39🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1039.ui-dns.biz
NSns1039.ui-dns.com
A2001:8d8:fe:53:0:d9a0:5227:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1039.ui-dns.com
A217.160.82.39🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1039.ui-dns.com
NSns1039.ui-dns.de
A2001:8d8:fe:53:0:d9a0:5027:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1039.ui-dns.de
A217.160.80.39🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1039.ui-dns.de
NSns1039.ui-dns.org
A2001:8d8:fe:53:0:d9a0:5327:100🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRns1039.ui-dns.org
A217.160.83.39🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRns1039.ui-dns.org
MXmx00.ionos.com ⭐
A74.208.5.3🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.
PTRmx00.perfora.net
MXmx01.ionos.com ⭐
A74.208.5.21🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.
PTRmx01.perfora.net
TXTv=spf1 include:_spf-us.ionos.com ~all
SOAns1039.ui-dns.bizhostmaster@1and1.com 2016-07-25 #3

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=1776209442

Same first word

ck-study.com

DNS History

13 records (7 active, 6 former)

20162017201820192020202120222023202420252026NSns1039.ui-dns.bizns1039.ui-dns.comns1039.ui-dns.dens1039.ui-dns.orgns57.1and1.comns58.1and1.comMXmx00.ionos.commx01.ionos.commx00.1and1.commx01.1and1.comA74.208.236.194216.250.121.3074.208.183.119
●NSns1039.ui-dns.biz2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
●NSns1039.ui-dns.com2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
●NSns1039.ui-dns.de2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
●NSns1039.ui-dns.org2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
○NSns57.1and1.com2015-06-22 → 2017-06-18 · 4 obs
● 2015-06-22 17:29:26
● 2017-06-18 06:54:34
○ 2026-03-25 16:27:58
○ 2026-04-14 23:50:38
○NSns58.1and1.com2015-06-22 → 2017-06-18 · 4 obs
● 2015-06-22 17:29:26
● 2017-06-18 06:54:34
○ 2026-03-25 16:27:58
○ 2026-04-14 23:50:38
○MXmx00.1and1.com2015-06-22 → 2017-06-18 · 4 obs
● 2015-06-22 17:29:26
● 2017-06-18 06:54:34
○ 2026-03-25 16:27:58
○ 2026-04-14 23:50:38
●MXmx00.ionos.com2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
○MXmx01.1and1.com2015-06-22 → 2017-06-18 · 4 obs
● 2015-06-22 17:29:26
● 2017-06-18 06:54:34
○ 2026-03-25 16:27:58
○ 2026-04-14 23:50:38
●MXmx01.ionos.com2026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38
○A216.250.121.302016-12-03 → 2017-06-18 · 5 obs
○ 2016-04-09 09:44:04
● 2016-12-03 12:05:38
● 2017-06-18 06:54:34
○ 2026-03-25 16:27:58
○ 2026-04-14 23:50:38
○A74.208.183.1192015-06-22 → 2016-04-09 · 4 obs
● 2015-06-22 17:29:26
● 2016-04-09 09:44:04
○ 2016-12-03 12:05:38
○ 2026-04-14 23:50:38
●A74.208.236.1942026-03-25 → 2026-04-14 · 3 obs
○ 2017-06-18 06:54:34
● 2026-03-25 16:27:58
● 2026-04-14 23:50:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comf.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net...-
ck-study.comns1039.ui-dns.de, ns1039.ui-dns.biz, ns1039.ui-dns.org, ns1039.ui-dns.com2 records

✅ Authoritative Response

Server:217.160.82.39

NS records: ns1039.ui-dns.de, ns1039.ui-dns.biz, ns1039.ui-dns.org, ns1039.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ck-study.com (unsigned zone)

⏱️ Timing

Total: 637ms | Queries: -

📄 Records

TypeCountSample Data
A174.208.236.194
NS4ns1039.ui-dns.de, ns1039.ui-dns.biz...
MX2mx00.ionos.com (pri: 10), mx01.ionos.com (pri: 10)
TXT1v=spf1 include:_spf-us.ionos.com ~all
SOA1ns1039.ui-dns.biz hostmaster.1and1.com

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1039.ui-dns.com, ns1039.ui-dns.com)

Analysis

IP Addresses

ck-study.com points to a single IP number: 74.208.236.194.

Other host names, for instance www.waptap.net, montgomerypainting.org, louieworks.com, rollingroads.org and irtt.org share IP numbers with ck-study.com.

Name Servers

ck-study.com is delegated to four name servers: ns1039.ui-dns.biz, ns1039.ui-dns.com, ns1039.ui-dns.de and ns1039.ui-dns.org.

ck-study.com at least partially shares name servers with other domains, for instance ds-team.net, vegainst.com, miningfromhome.com, outboardcolors.com and midibero.com.

These name servers are often used together with ns1056.ui-dns.org, ns1071.ui-dns.biz, ns1112.ui-dns.de, ns1118.ui-dns.org and ns1089.ui-dns.com.

Host names with two IP numbers:

ns1039.ui-dns.biz points to: 2001:8d8:fe:53:0:d9a0:5127:100 and 217.160.81.39.

ns1039.ui-dns.com points to: 2001:8d8:fe:53:0:d9a0:5227:100 and 217.160.82.39.

ns1039.ui-dns.de points to: 2001:8d8:fe:53:0:d9a0:5027:100 and 217.160.80.39.

ns1039.ui-dns.org points to: 2001:8d8:fe:53:0:d9a0:5327:100 and 217.160.83.39.

Mail Servers

ck-study.com is handled by two mail servers: mx00.ionos.com and mx01.ionos.com.

ck-study.com uses the same mail server configuration as other domains, such as weacare.net, thisphonerocks.com, riddlepi.com, talkingbox.us and kids4play.com.

ck-study.com shares some mail servers with other domains at least partially, for example ciccr.com.

Host names with one IP number: mx00.ionos.com points to 74.208.5.3; mx01.ionos.com points to 74.208.5.21.