istc-tu.org - robtex.com

istc-tu.org

DNSSEC⚠️ Not signed
NSceleste.ns.cloudflare.com ⚠️ Not in zone NS records
A2606:4700:50::a29f:2607🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A2803:f800:50::6ca2:c207🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRceleste.ns.cloudflare.com
A2a06:98c1:50::ac40:2207🇺🇸 Cloudflare2a06:98c1:50::/45
PTRceleste.ns.cloudflare.com
A108.162.194.7🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A162.159.38.7Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A172.64.34.7🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
NSyevgen.ns.cloudflare.com ⚠️ Not in zone NS records
A2606:4700:58::a29f:2cdf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyevgen.ns.cloudflare.com
A2803:f800:50::6ca2:c3df🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRyevgen.ns.cloudflare.com
A2a06:98c1:50::ac40:23df🇺🇸 Cloudflare2a06:98c1:50::/45
PTRyevgen.ns.cloudflare.com
A108.162.195.223🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyevgen.ns.cloudflare.com
A162.159.44.223Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyevgen.ns.cloudflare.com
A172.64.35.223🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyevgen.ns.cloudflare.com

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1776171193
WOT: SAFE (80/100)

Previously MX for

istc-tu.org

Same first word

istc-tu.org

Similar names

stuc-it.nl
ustc-it.com

DNS History

13 records (2 active, 11 former)

200920112013201520172019202120232025NSceleste.ns.cloudflare.comyevgen.ns.cloudflare.comns1.7cloudcomputing.comns1.domainmanager.comns1.md-pb-iqsv.comns2.7cloudcomputing.comns2.domainmanager.compb4.md-pb-iqsv.comMXistc-tu.orgnullmx.domainmanager.comA129.121.96.133193.235.117.10464.40.103.249
●NSceleste.ns.cloudflare.com2026-04-10 → 2026-04-14 · 3 obs
○ 2017-01-26 00:23:28
● 2026-04-10 15:19:58
● 2026-04-14 13:18:28
○NSns1.7cloudcomputing.com2015-06-24 → 2015-11-11 · 5 obs
○ 2008-03-18 23:42:56
● 2015-06-24 22:16:00
● 2015-11-11 10:15:34
○ 2016-02-03 06:04:54
○ 2026-04-14 13:18:28
○NSns1.domainmanager.com2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 23:42:56
○ 2015-06-24 22:16:00
○ 2026-04-14 13:18:28
○NSns1.md-pb-iqsv.com2016-04-29 → 2017-01-26 · 5 obs
○ 2016-02-03 06:04:54
● 2016-04-29 18:06:12
● 2017-01-26 00:23:28
○ 2026-04-10 15:19:58
○ 2026-04-14 13:18:28
○NSns2.7cloudcomputing.com2015-06-24 → 2015-11-11 · 5 obs
○ 2008-03-18 23:42:56
● 2015-06-24 22:16:00
● 2015-11-11 10:15:34
○ 2016-04-29 18:06:12
○ 2026-04-14 13:18:28
○NSns2.domainmanager.com2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 23:42:56
○ 2015-06-24 22:16:00
○ 2026-04-14 13:18:28
○NSpb4.md-pb-iqsv.com2016-04-29 → 2017-01-26 · 5 obs
○ 2016-02-03 06:04:54
● 2016-04-29 18:06:12
● 2017-01-26 00:23:28
○ 2026-04-10 15:19:58
○ 2026-04-14 13:18:28
●NSyevgen.ns.cloudflare.com2026-04-10 → 2026-04-14 · 3 obs
○ 2017-01-26 00:23:28
● 2026-04-10 15:19:58
● 2026-04-14 13:18:28
○MXistc-tu.org2015-06-24 → 2017-01-26 · 8 obs
○ 2008-03-18 23:42:56
● 2015-06-24 22:16:00
● 2015-11-11 10:15:34
○ 2016-02-03 06:04:54
● 2016-04-29 18:06:12
● 2017-01-26 00:23:28
○ 2026-04-10 15:19:58
○ 2026-04-14 13:18:28
○MXnullmx.domainmanager.com2008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 23:42:56
○ 2015-06-24 22:16:00
○ 2026-04-14 13:18:28
○A129.121.96.1332015-06-24 → 2015-11-11 · 5 obs
○ 2008-03-18 23:42:56
● 2015-06-24 22:16:00
● 2015-11-11 10:15:34
○ 2016-02-03 06:04:54
○ 2026-04-14 13:18:28
○A193.235.117.1042016-04-29 → 2017-01-26 · 5 obs
○ 2016-02-03 06:04:54
● 2016-04-29 18:06:12
● 2017-01-26 00:23:28
○ 2026-04-10 15:19:58
○ 2026-04-14 13:18:28
○A64.40.103.2492008-03-18 → 2008-03-18 · 3 obs
● 2008-03-18 23:42:56
○ 2015-06-24 22:16:00
○ 2026-04-14 13:18:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
istc-tu.orgceleste.ns.cloudflare.com, yevgen.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.223

NS records: celeste.ns.cloudflare.com, yevgen.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for istc-tu.org (unsigned zone)

⏱️ Timing

Total: 578ms | Queries: -

📄 Records

TypeCountSample Data

Analysis

Name Servers

Two name servers celeste.ns.cloudflare.com and yevgen.ns.cloudflare.com handle the delegation for istc-tu.org.

istc-tu.org shares the same name server setup as other domains, for instance eco-logis.org, scottishmaternity.org, scarboroughcrossroads.org, elpereirano.com and icd-idb.org.

istc-tu.org at least partially shares name servers with other domains, for instance mariadey.com, k9spud.com, bityhyo.com, russellplattassociates.com and loweref.de.

These name servers are commonly used with javier.ns.cloudflare.com and rudy.ns.cloudflare.com.

Six IP addresses per host:

celeste.ns.cloudflare.com points to 2606:4700:50::a29f:2607, 2803:f800:50::6ca2:c207, 2a06:98c1:50::ac40:2207, 108.162.194.7, 162.159.38.7 and 172.64.34.7; yevgen.ns.cloudflare.com points to 2606:4700:58::a29f:2cdf, 2803:f800:50::6ca2:c3df, 2a06:98c1:50::ac40:23df, 108.162.195.223, 162.159.44.223 and 172.64.35.223