askul.com - dns.ninja

`askul.com`

DNSSEC	⚠️ Not signed
A	210.88.61.169
NS	`ns000.d-53.net` ⭐
NS	`dns-b.iij.ad.jp` ⚠️ Not in zone NS records
		A	2001:240:bb81::28:51^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
		A	202.32.219.51^{🇯🇵 IIJ-AS202.32.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
NS	`dns-c.iij.ad.jp` ⚠️ Not in zone NS records
		A	2001:240:bb81::29:111^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.net`
		A	210.138.20.111^{🇯🇵 IIJ-AS210.138.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.net`
NS	`ns020-6gc8o7jh21be9d0b.6.d-53.info` ⚠️ Not in parent delegation
		A	2001:240:bb81::28:51^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
		A	202.32.219.51^{🇯🇵 IIJ-AS202.32.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.biz`
NS	`ns020-6gc8o7jh21be9d0b.6.d-53.jp` ⚠️ Not in parent delegation
		A	2001:240:bb81::29:1111^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.org`
		A	203.180.146.111^{🇯🇵 IIJ-AS203.180.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.org`
NS	`ns020-6gc8o7jh21be9d0b.6.d-53.org` ⚠️ Not in parent delegation
		A	2001:240:bb81::29:111^{🇯🇵 IIJ-AS2001:240::/32 IIJ IPv6 BLOCK ( AS2497 )}
			PTR	`s020.d-53.net`
		A	210.138.20.111^{🇯🇵 IIJ-AS210.138.0.0/16 IIJ IPv4 BLOCK ( AS2497 )}
			PTR	`s020.d-53.net`
MX	`askul-com.mail.protection.outlook.com` ⭐
		A	52.101.124.0^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tycp286cu02600.inbound.protection.outlook.com`
		A	52.101.124.5^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tyvp286cu00305.inbound.protection.outlook.com`
		A	52.101.124.6^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tyvp286cu00206.inbound.protection.outlook.com`
		A	52.101.157.40^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os9p286cu00100.inbound.protection.outlook.com`
TXT	`MS=ms84731645`
TXT	`DAC=dacgOyH1bO0TCAsbiSC`
TXT	`7cGKppVOPAOiPNvnZaZsOrzCcDaKpA`
TXT	`Zb2dL1jjamvBY2QpsOqwjdb1qzGZqK`
TXT	`ZOOM_verify_evduUISORXWmgjlDTUJahQ`
TXT	`8EQzxfQad9aWlwLFhVaKhj7c8mBOl852yh/Jv60XfbI=`
TXT	`docusign=30a9541f-7fda-4435-a9a0-c333da5231b6`
TXT	`1password-site-verification=H4OGCWWQLRECZNKXNPLC6M7MHA`
TXT	`openai-domain-verification=dv-L7iIXLkvbxSP9roAArIiPy87`
TXT	`google-site-verification=2jpx8RvYsKGaZRefyD8OVFQrrzz41w0QUTJN0ylz7pw`
TXT	`google-site-verification=37qdeUuj_3NvSNpz7zWwJwyZRqxaPrAfB7J7nAk31BE`
TXT	`box-domain-verification=12d678e32f6659669d5be40172dd2caa8a444d54683849b5e5e32...`
TXT	`adobe-idp-site-verification=0309c1042f28b3b3bde0bb2569e1044554b2fd0e67ee96066...`
TXT	`atlassian-domain-verification=ceVzwqFH2Yk6AOETaO/ze/R3gjKBIeZ9YQHg2tPb4agApUk...`
TXT	`v=spf1 include:_spf.cmjp7.clickmailer.jp include:spf.askul.com include:smp.ne...`
SOA	`ns000.d-53.net`dns-managers@iij.ad.jp serial=373

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785949364

Subdomains

mailds.askul.com

Same first word

askul.biz

askul.co.jp

askul.com

askul.co

askul.jp

askul.us

askul.org

askul.com.cn

Similar names

luska.ru

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kausl.com

uslak.com

kulas.info

sulak.info

klaus.ch

sulak.net

uksal.com

skalu.com

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lasuk.com

lusak.at

kalus.cn

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lauks.de

sulak.cz

lukas.asia

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aluks.com

kslau.com.my

sukla.com

sulak.com

lukas.graphics

kulas.us

ulkas.eu

klaus.de

sulka.pl

klaus.com.au

kulsa.at

kasul.in

lukas.lu

lukas.com.pl

aluks.si

sulka.fr

lukas.guru

lukas.pl

kalus.eu

sukla.in

sluka.at

kulas.tech

klaus.net

lukas.com.mx

luaks.com

lukas.at

luksa.sk

ukasl.net

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kalus.eu.org

luksa.net

kalus.com

lukas.cl

lukas.zone

kulsa.com

aluks.ru

kausl.at

sakul.nl

klaus.com.ua

klaus.kz

klaus.co

sulka.biz

klaus.com.tr

sluka.biz

lukas.schule

kulsa.biz

luska.ch

kalus.si

lukas.waw.pl

alkus.com

lukas.ru

aluks.de

sulka.cz

lukas.pro

skual.com

ksual.eu

sulka.net

sukal.cz

lukas.ch

luksa.de

klaus.cl

sluka.org

asluk.com

kauls.in

sualk.de

kalus.hu

uklsa.co.uk

alsuk.com

lusak.it

luksa.com.au

klaus.at

lukas.world

lukas.cool

kauls.info

klaus.ru

DNS History

13 records (8 active, 5 former)

●NSdns-b.iij.ad.jp2015-05-07 → 2026-08-05 · 3 obs

○ 2008-01-23 20:44:28
● 2015-05-07 02:46:30
● 2026-08-05 17:09:30

●NSdns-c.iij.ad.jp2015-05-07 → 2026-08-05 · 3 obs

○ 2008-01-23 20:44:28
● 2015-05-07 02:46:30
● 2026-08-05 17:09:30

●NSns000.d-53.net2026-03-09 → 2026-08-05 · 3 obs

○ 2015-05-07 02:46:30
● 2026-03-09 03:29:24
● 2026-08-05 17:09:30

○NSns01.idc.jp2008-01-23 → 2008-01-23 · 3 obs

● 2008-01-23 20:44:28
○ 2015-05-07 02:46:30
○ 2026-08-05 17:09:30

○NSns02.idc.jp2008-01-23 → 2008-01-23 · 3 obs

● 2008-01-23 20:44:28
○ 2015-05-07 02:46:30
○ 2026-08-05 17:09:30

●NSns020-6gc8o7jh21be9d0b.6.d-53.info2026-03-09 → 2026-08-05 · 3 obs

○ 2015-05-07 02:46:30
● 2026-03-09 03:29:24
● 2026-08-05 17:09:30

●NSns020-6gc8o7jh21be9d0b.6.d-53.jp2026-03-09 → 2026-08-05 · 3 obs

○ 2015-05-07 02:46:30
● 2026-03-09 03:29:24
● 2026-08-05 17:09:30

●NSns020-6gc8o7jh21be9d0b.6.d-53.org2026-03-09 → 2026-08-05 · 3 obs

○ 2015-05-07 02:46:30
● 2026-03-09 03:29:24
● 2026-08-05 17:09:30

○NSns03.idc.jp2008-01-23 → 2008-01-23 · 3 obs

● 2008-01-23 20:44:28
○ 2015-05-07 02:46:30
○ 2026-08-05 17:09:30

○MXaskul-com.mail.eo.outlook.com2015-05-07 → 2026-06-11 · 5 obs

○ 2008-01-23 20:44:28
● 2015-05-07 02:46:30
● 2026-06-11 23:04:30
○ 2026-06-20 18:58:10
○ 2026-08-05 17:09:30

●MXaskul-com.mail.protection.outlook.com2026-03-09 → 2026-08-05 · 3 obs

○ 2015-05-07 02:46:30
● 2026-03-09 03:29:24
● 2026-08-05 17:09:30

○MXmailds.askul.com2008-01-23 → 2008-01-23 · 3 obs

● 2008-01-23 20:44:28
○ 2015-05-07 02:46:30
○ 2026-08-05 17:09:30

●A210.88.61.1692008-01-23 → 2026-08-05 · 2 obs

● 2008-01-23 20:44:28
● 2026-08-05 17:09:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net...	-
askul.com	dns-b.iij.ad.jp, dns-c.iij.ad.jp	-

✅ Authoritative Response

Server:202.32.219.51

NS records: dns-b.iij.ad.jp, dns-c.iij.ad.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for askul.com (unsigned zone)

⏱️ Timing

Total: 1164ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.88.61.169`
NS	3	`ns020-6gc8o7jh21be9d0b.6.d-53.info, ns020-6gc8o7jh21be9d0b.6.d-53.jp...`
MX	1	`askul-com.mail.protection.outlook.com (p`
TXT	15	`adobe-idp-site-verification=0309c1042f28, atlassian-domain-verification=ceVzwqFH2Y...`
SOA	1	`ns000.d-53.net dns-managers.iij.ad.jp`

Analysis

Hierarchy

The domain mailds.askul.com falls under the parent askul.com.

IP Addresses

askul.com points to a single IP number: 210.88.61.169.

Name Servers

DNS for askul.com is handled by 6 name servers: ns000.d-53.net, ns020-6gc8o7jh21be9d0b.6.d-53.info, dns-b.iij.ad.jp and 3 others.

At least some of askul.com's name servers are shared with other domains, for example ndex.jp, tamahome.net, otoku-keitai.net and two more.

These name servers tend to co-occur with dns-c.iij.ad.jp, rev.iij-dns.jp, rev.iij-dns.net and 7 other name servers in the same DNS delegations.

Host names with two IP numbers:

ns020-6gc8o7jh21be9d0b.6.d-53.info has two IP addresses: 202.32.219.51 and 2001:240:bb81::28:51.

dns-b.iij.ad.jp has two IP addresses: 202.32.219.51 and 2001:240:bb81::28:51.

dns-c.iij.ad.jp has two IP addresses: 210.138.20.111 and 2001:240:bb81::29:111.

ns020-6gc8o7jh21be9d0b.6.d-53.jp has two IP addresses: 203.180.146.111 and 2001:240:bb81::29:1111.

ns020-6gc8o7jh21be9d0b.6.d-53.org has two IP addresses: 210.138.20.111 and 2001:240:bb81::29:111.

Host names pointing to 2001:240:bb81::28:51 IP addresses: ns020-6gc8o7jh21be9d0b.6.d-53.info and dns-b.iij.ad.jp.

Host names pointing to 202.32.219.51 IP addresses: ns020-6gc8o7jh21be9d0b.6.d-53.info and dns-b.iij.ad.jp.

Host names pointing to 2001:240:bb81::29:111 IP addresses: dns-c.iij.ad.jp and ns020-6gc8o7jh21be9d0b.6.d-53.org.

Host names pointing to 210.138.20.111 IP addresses: dns-c.iij.ad.jp and ns020-6gc8o7jh21be9d0b.6.d-53.org.

Mail Servers

askul.com has one mail server: askul-com.mail.protection.outlook.com.

askul-com.mail.protection.outlook.com resolves to four IP addresses: 52.101.124.0, 52.101.124.5, 52.101.124.6 and 52.101.157.40.