microschool.kr - robtex.com

microschool.kr

DNSSEC⚠️ Not signed
A18.245.143.5🇺🇸 Amazon18.245.140.0/22
PTRserver-18-245-143-5.lhr5.r.cloudfront.net
A18.245.143.11🇺🇸 Amazon18.245.140.0/22
A18.245.143.17🇺🇸 Amazon18.245.140.0/22
A18.245.143.24🇺🇸 Amazon18.245.140.0/22
NSans1.hostcocoa.com ⭐
A205.251.192.117🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-117.awsdns-14.com
NSans2.hostcocoa.com
A205.251.195.46🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-814.awsdns-37.net
NSans3.hostcocoa.com
A205.251.197.133🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1413.awsdns-48.org
NSans4.hostcocoa.com
A205.251.198.221🇺🇸 Amazon205.251.198.0/24 prefix
PTRns-1757.awsdns-27.co.uk
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c09::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbh-in-f27.1e100.net
A192.178.155.27🇺🇸 Google192.178.155.0/24
PTRyuiadrs-in-f27.1e100.net
MXsmtp.google.com ⭐
A2607:f8b0:4023:c03::1a🇺🇸 Google2607:f8b0::/32
PTRdy-in-f26.1e100.net
A2607:f8b0:4023:c03::1b🇺🇸 Google2607:f8b0::/32
PTRdy-in-f27.1e100.net
A2607:f8b0:4023:c0d::1a🇺🇸 Google2607:f8b0::/32
PTRdl-in-f26.1e100.net
A2607:f8b0:4023:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRdl-in-f27.1e100.net
A74.125.137.26🇺🇸 Google74.125.137.0/24
PTRdy-in-f26.1e100.net
A74.125.137.27🇺🇸 Google74.125.137.0/24
PTRdy-in-f27.1e100.net
A142.250.101.27🇺🇸 Google142.250.101.0/24
PTRdz-in-f27.1e100.net
A142.251.2.26🇺🇸 Google142.251.2.0/24
PTRdl-in-f26.1e100.net
A142.251.2.27🇺🇸 Google142.251.2.0/24
PTRdl-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1a🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f26.1e100.net
A192.178.128.26🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:4013:c1e::1a🇳🇱 Google2a00:1450:4013::/48
PTRyugrqzs-in-f26.1e100.net
A192.178.213.26🇺🇸 Google192.178.213.0/24
PTRyugrqzs-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c00::1a🇧🇪 Google2a00:1450:400c::/48
PTRws-in-f26.1e100.net
PTRws-in-x1a.1e100.net
A173.194.76.26🇺🇸 Google173.194.76.0/24
PTRws-in-f26.1e100.net
SOAans1.hostcocoa.comawsdns-hostmaster@amazon.com serial=1

kr

DNSSEC🔒 Signed (DS record present)
NSg.dns.kr ⭐
NSb.dns.kr
NSc.dns.kr
NSd.dns.kr
NSe.dns.kr
NSf.dns.kr
SOAg.dns.krdomain-manager@nic.or.kr serial=2605120745

Same first word

microschool.kr

DNS History

42 records (14 active, 28 former)

NSans1.hostcocoa.comans2.hostcocoa.comans3.hostcocoa.comans4.hostcocoa.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comsmtp.google.comA18.245.143.1118.245.143.1718.245.143.2418.245.143.518.161.21.2918.161.21.3018.161.21.5118.161.21.7518.66.255.12818.66.255.4018.66.255.5018.66.255.8418.67.0.3518.67.0.418.67.0.8018.67.0.883.162.3.1043.162.3.23.162.3.493.162.3.6854.230.114.4954.230.114.7754.230.114.8454.230.114.9854.230.253.11854.230.253.4054.230.253.5454.230.253.6699.86.91.11199.86.91.12099.86.91.1699.86.91.48
●NSans1.hostcocoa.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●NSans2.hostcocoa.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●NSans3.hostcocoa.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●NSans4.hostcocoa.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXalt1.aspmx.l.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXalt2.aspmx.l.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXalt3.aspmx.l.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXalt4.aspmx.l.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXaspmx.l.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
●MXsmtp.google.com2026-04-27 → 2026-05-12 · 2 obs
● 2026-04-27 05:49:46
● 2026-05-12 06:22:36
○A18.161.21.292026-05-03 → 2026-05-11 · 26 obs
○ 2026-05-02 21:04:38
● 2026-05-03 00:28:04
○ 2026-05-03 08:12:02
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○ 2026-05-11 21:57:40
○ 2026-05-12 06:22:36
○A18.161.21.302026-05-03 → 2026-05-11 · 26 obs
○ 2026-05-02 21:04:38
● 2026-05-03 00:28:04
○ 2026-05-03 08:12:02
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○ 2026-05-11 21:57:40
○ 2026-05-12 06:22:36
○A18.161.21.512026-05-03 → 2026-05-11 · 26 obs
○ 2026-05-02 21:04:38
● 2026-05-03 00:28:04
○ 2026-05-03 08:12:02
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○ 2026-05-11 21:57:40
○ 2026-05-12 06:22:36
○A18.161.21.752026-05-03 → 2026-05-11 · 26 obs
○ 2026-05-02 21:04:38
● 2026-05-03 00:28:04
○ 2026-05-03 08:12:02
○ 2026-05-04 16:00:08
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○ 2026-05-11 21:57:40
○ 2026-05-12 06:22:36
●A18.245.143.112026-04-29 → 2026-05-12 · 59 obs
○ 2026-04-27 05:49:46
● 2026-04-29 21:29:52
● 2026-04-30 06:46:20
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● 2026-05-12 06:22:36
●A18.245.143.172026-04-29 → 2026-05-12 · 59 obs
○ 2026-04-27 05:49:46
● 2026-04-29 21:29:52
● 2026-04-30 06:46:20
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● 2026-05-12 05:59:30
● 2026-05-12 06:22:36
●A18.245.143.242026-04-29 → 2026-05-12 · 59 obs
○ 2026-04-27 05:49:46
● 2026-04-29 21:29:52
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●A18.245.143.52026-04-29 → 2026-05-12 · 59 obs
○ 2026-04-27 05:49:46
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○A18.66.255.1282026-04-27 → 2026-05-04 · 23 obs
● 2026-04-27 05:49:46
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○A18.66.255.402026-04-27 → 2026-05-04 · 23 obs
● 2026-04-27 05:49:46
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○A18.66.255.502026-04-27 → 2026-05-04 · 23 obs
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○A18.66.255.842026-04-27 → 2026-05-04 · 23 obs
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○A18.67.0.352026-05-10 → 2026-05-11 · 7 obs
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○A18.67.0.42026-05-10 → 2026-05-11 · 7 obs
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○A18.67.0.802026-05-10 → 2026-05-11 · 7 obs
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○A18.67.0.882026-05-10 → 2026-05-11 · 7 obs
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○A3.162.3.1042026-05-07 → 2026-05-07 · 5 obs
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○A3.162.3.22026-05-07 → 2026-05-07 · 5 obs
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○A3.162.3.492026-05-07 → 2026-05-07 · 5 obs
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○A3.162.3.682026-05-07 → 2026-05-07 · 5 obs
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○A54.230.114.492026-05-01 → 2026-05-01 · 4 obs
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○A54.230.114.772026-05-01 → 2026-05-01 · 4 obs
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○A54.230.114.842026-05-01 → 2026-05-01 · 4 obs
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○A54.230.114.982026-05-01 → 2026-05-01 · 4 obs
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○A54.230.253.1182026-05-04 → 2026-05-07 · 16 obs
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○A54.230.253.402026-05-04 → 2026-05-07 · 16 obs
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○A54.230.253.542026-05-04 → 2026-05-07 · 16 obs
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○A54.230.253.662026-05-04 → 2026-05-07 · 16 obs
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○A99.86.91.1112026-05-12 → 2026-05-12 · 4 obs
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○A99.86.91.1202026-05-12 → 2026-05-12 · 4 obs
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○A99.86.91.162026-05-12 → 2026-05-12 · 4 obs
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○A99.86.91.482026-05-12 → 2026-05-12 · 4 obs
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🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
krb.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...-
microschool.krans1.hostcocoa.com, ans3.hostcocoa.com, ans2.hostcocoa.com, ans4.hostcocoa.com-

✅ Authoritative Response

Server:205.251.198.221

NS records: ans1.hostcocoa.com, ans3.hostcocoa.com, ans2.hostcocoa.com, ans4.hostcocoa.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for microschool.kr (unsigned zone)

⏱️ Timing

Total: 1776ms | Queries: -

📄 Records

TypeCountSample Data
A418.161.21.75, 18.161.21.30...
NS4ans1.hostcocoa.com, ans2.hostcocoa.com...
MX6aspmx.l.google.com (pri: 1), smtp.google.com (pri: 1)...
SOA1ans1.hostcocoa.com awsdns-hostmaster.ama

Analysis

IP Addresses

microschool.kr points to four IP numbers: 18.245.143.5, 18.245.143.11, 18.245.143.17 and 18.245.143.24.

Other host names including emojuju.com, flyt.tech, o8ijvwv2a0.execute-api.eu-west-1.amazonaws.com, do16ybk5eyt02.cloudfront.net and cdn.mailpublisher.jp share IP numbers with microschool.kr.

Name Servers

microschool.kr is delegated to four name servers: ans1.hostcocoa.com, ans2.hostcocoa.com, ans3.hostcocoa.com and ans4.hostcocoa.com.

microschool.kr at least partially shares name servers with other domains, including 1day1clean.co.kr, governmentseoul.org, downrise.co.kr, landlawyer.co.kr and miicrete.com.

Hostnames with a single IP:

ans1.hostcocoa.com points to 205.251.192.117

ans2.hostcocoa.com points to 205.251.195.46

ans3.hostcocoa.com points to 205.251.197.133

ans4.hostcocoa.com points to 205.251.198.221

Mail Servers

microschool.kr is handled by six mail servers: smtp.google.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

The mail servers for microschool.kr are shared with other domains, for instance toddyoung.org, dalcero.org, loveshushi.com, italiacine.com and cornerstonecougars.net.

these mail servers are commonly used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Nine IP numbers:

smtp.google.com points to 2607:f8b0:4023:c03::1a, 2607:f8b0:4023:c03::1b, 2607:f8b0:4023:c0d::1a, 2607:f8b0:4023:c0d::1b, 74.125.137.26, 74.125.137.27, 142.250.101.27, 142.251.2.26 and 142.251.2.27.

Two IP numbers:

aspmx.l.google.com points to 2607:f8b0:4004:c09::1b and 192.178.155.27.

alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1a and 192.178.128.26.

alt2.aspmx.l.google.com points to 2a00:1450:4013:c1e::1a and 192.178.213.26.

alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.26.

alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1a and 173.194.76.26.