cref.school - robtex.com

cref.school

DNSSEC⚠️ Not signed
A18.213.244.203🇺🇸 Amazon
PTRec2-18-213-244-203.compute-1.amazonaws.com
A44.221.105.82🇺🇸 Amazon
A52.1.240.179🇺🇸 Amazon
NSns-1064.awsdns-05.org ⭐
A2600:9000:5304:2800::1🇺🇸 Amazon
PTRns-1064.awsdns-05.org
A205.251.196.40🇺🇸 Amazon
PTRns-1064.awsdns-05.org
NSns-1709.awsdns-21.co.uk
A2600:9000:5306:ad00::1🇺🇸 Amazon
PTRns-1709.awsdns-21.co.uk
A205.251.198.173🇺🇸 Amazon
PTRns-1709.awsdns-21.co.uk
NSns-452.awsdns-56.com
A2600:9000:5301:c400::1🇺🇸 Amazon
PTRns-452.awsdns-56.com
A205.251.193.196🇺🇸 Amazon
PTRns-452.awsdns-56.com
NSns-748.awsdns-29.net
A2600:9000:5302:ec00::1🇺🇸 Amazon
PTRns-748.awsdns-29.net
A205.251.194.236🇺🇸 Amazon
PTRns-748.awsdns-29.net
TXTMS=ms66045096
SOAns-1064.awsdns-05.orgawsdns-hostmaster@amazon.com serial=1

school

DNSSEC🔒 Signed (DS record present)
NSv0n0.nic.school ⭐ 🔒
NSv0n1.nic.school 🔒
NSv0n2.nic.school 🔒
NSv0n3.nic.school 🔒
NSv2n0.nic.school 🔒
NSv2n1.nic.school 🔒
SOAv0n0.nic.schoolhostmaster@donuts.email serial=1771738069

Same first word

cref.nl
cref.co.kr
cref.org.cn
cref.de
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cref.co.uk
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cref.school
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rcfe.net
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fcre.top
ecrf.fi
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refc.ru
frec.solutions
fcre.co.jp
fecr.in
ecfr.gov
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efrc.ru
ecrf.be
rcfe.com
frec.org.uk
crfe.ca
erfc.us
ecrf.kr
ecrf.de
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cerf.fr
cfre.net
recf.ca
cefr.com
cefr.asso.fr
cfre.de
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ercf.blogspot.com
frce.be
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refc.com
cfre.ca
fcer.net
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cefr.fr
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cerf.cz
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ecrf.us
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erfc.com.au
cerf.lv
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ferc.com.br
frec.fr
ecfr.eu
ecrf.si
ferc.it
cerf.us

DNS History

7 records (7 active, 0 former)

NSns-1064.awsdns-05.orgns-1709.awsdns-21.co.ukns-452.awsdns-56.comns-748.awsdns-29.netA18.213.244.20344.221.105.8252.1.240.179
●NSns-1064.awsdns-05.org2026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●NSns-1709.awsdns-21.co.uk2026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●NSns-452.awsdns-56.com2026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●NSns-748.awsdns-29.net2026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●A18.213.244.2032026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●A44.221.105.822026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42
●A52.1.240.1792026-02-21 → 2026-02-22 · 2 obs
● 2026-02-21 11:31:02
● 2026-02-22 05:52:42

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
schoolv0n0.nic.school, v0n1.nic.school, v0n2.nic.school, v0n3.nic.school...12 records
cref.schoolns-1709.awsdns-21.co.uk, ns-1064.awsdns-05.org, ns-452.awsdns-56.com, ns-748.awsdns-29.net-

✅ Authoritative Response

Server: 205.251.198.173

NS records: ns-1709.awsdns-21.co.uk, ns-1064.awsdns-05.org, ns-452.awsdns-56.com, ns-748.awsdns-29.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cref.school (unsigned zone)

⏱️ Timing

Total: 693ms | Queries: -

📄 Records

TypeCountSample Data
A344.221.105.82, 52.1.240.179...
NS4ns-1064.awsdns-05.org, ns-1709.awsdns-21.co.uk...
TXT1MS=ms66045096
SOA1ns-1064.awsdns-05.org awsdns-hostmaster.

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.school, v0n1.nic.school, v0n2.nic.school...)

AI analysis

cref.school resolves to three IP numbers: 18.213.244.203, 44.221.105.82 and 52.1.240.179.

Other host names, for instance, ec2-18-213-244-203.compute-1.amazonaws.com share IP numbers with cref.school.

cref.school is delegated to four name servers: ns-452.awsdns-56.com, ns-748.awsdns-29.net, ns-1064.awsdns-05.org and ns-1709.awsdns-21.co.uk.

cref.school shares name servers with other domains at least partially, for example anaphylaxie-experten.info, my-career-tab.com, nexon.io, 37.151.88.in-addr.arpa and aluminummanufacturers.org.

Host names with two IP numbers:

ns-452.awsdns-56.com points to: 2600:9000:5301:c400::1 and 205.251.193.196

ns-748.awsdns-29.net points to: 2600:9000:5302:ec00::1 and 205.251.194.236

ns-1064.awsdns-05.org points to: 2600:9000:5304:2800::1 and 205.251.196.40

ns-1709.awsdns-21.co.uk points to: 2600:9000:5306:ad00::1 and 205.251.198.173