`onlinecourseguide.info`

DNSSEC	⚠️ Not signed
A	72.52.178.23^{🇺🇸 LiquidWeb72.52.128.0/17 Liquid Web LLC 2703 Ena Dr. Lansing, MI 48917}
		PTR	`hapoxy01.parklogic.com`
NS	`01.dnsv.jp` ⭐
		A	2400:8500:3300::53^{🇯🇵 GMO-DNS2400:8500:3300::/48 GMO Internet,inc.}
			PTR	`01.dnsv.jp`
		A	157.7.32.53^{🇯🇵 GMO-DNS157.7.32.0/24 GMO Internet,inc. Network-Team.}
			PTR	`01.dnsv.jp`
NS	`02.dnsv.jp`
		A	157.7.33.53^{🇯🇵 GMO-DNS157.7.33.0/24 GMO Internet,inc. Network-Team.}
			PTR	`02.dnsv.jp`
NS	`03.dnsv.jp`
		A	2400:8500:3000::53^{🇯🇵 GMO-DNS2400:8500:3000::/48 GMO Internet,inc.}
			PTR	`03.dnsv.jp`
		A	157.7.34.53^{🇯🇵 GMO-DNS157.7.34.0/24 GMO Internet,inc. Network-Team.}
			PTR	`03.dnsv.jp`
NS	`04.dnsv.jp`
		A	2400:8500:3fff::53^{🇯🇵 GMO-DNS2400:8500:3fff::/48 GMO Internet,inc.}
			PTR	`04.dnsv.jp`
		A	157.7.35.53^{🇯🇵 GMO-DNS157.7.35.0/24 GMO Internet,inc. Network-Team.}
			PTR	`04.dnsv.jp`
SOA	`01.dnsv.jp`hostmaster@dnsv.jp serial=1769933485

`info`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.info.afilias-nst.info` ⭐
	NS	`a2.info.afilias-nst.info`
	NS	`b0.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`b2.info.afilias-nst.org` ⚠️ Not in parent delegation
	NS	`c0.info.afilias-nst.info`
	NS	`d0.info.afilias-nst.org` ⚠️ Not in parent delegation
	SOA	`a0.info.afilias-nst.info`hostmaster@donuts.email serial=1774428883

Same first word

onlinecourseguide.info

DNS History

5 records (5 active, 0 former)

●NS01.dnsv.jp2026-02-23 → 2026-03-25 · 2 obs

● 2026-02-23 22:42:24
● 2026-03-25 09:24:36

●NS02.dnsv.jp2026-02-23 → 2026-03-25 · 2 obs

● 2026-02-23 22:42:24
● 2026-03-25 09:24:36

●NS03.dnsv.jp2026-02-23 → 2026-03-25 · 2 obs

● 2026-02-23 22:42:24
● 2026-03-25 09:24:36

●NS04.dnsv.jp2026-02-23 → 2026-03-25 · 2 obs

● 2026-02-23 22:42:24
● 2026-03-25 09:24:36

●A72.52.178.232026-02-23 → 2026-03-25 · 2 obs

● 2026-02-23 22:42:24
● 2026-03-25 09:24:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
info	a0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info	-
onlinecourseguide.info	03.dnsv.jp, 01.dnsv.jp, 02.dnsv.jp, 04.dnsv.jp	-

✅ Authoritative Response

Server:157.7.33.53

NS records: 03.dnsv.jp, 01.dnsv.jp, 02.dnsv.jp, 04.dnsv.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onlinecourseguide.info (unsigned zone)

⏱️ Timing

Total: 1160ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`72.52.178.23`
NS	4	`01.dnsv.jp, 02.dnsv.jp...`
SOA	1	`01.dnsv.jp hostmaster.dnsv.jp`

Analysis

IP Addresses

onlinecourseguide.info points to a single IP: 72.52.178.23.

Other host names, for instance hourxo.biz, truonghaitin.com, zonaforum.online, hdpe-upvc-grp-fittings.site and addressnumber.shop share IP numbers with onlinecourseguide.info.

Name Servers

onlinecourseguide.info is delegated to four name servers: 01.dnsv.jp, 02.dnsv.jp, 03.dnsv.jp and 04.dnsv.jp.

onlinecourseguide.info at least partially shares its name servers with other domains, for instance asou-mokuzai.co.jp, sanrio.jp, nf-reform.com, szprogen.com and tomhakms.com.

Two IPs per host:

01.dnsv.jp points to 2400:8500:3300::53 and 157.7.32.53.

03.dnsv.jp points to 2400:8500:3000::53 and 157.7.34.53.

04.dnsv.jp points to 2400:8500:3fff::53 and 157.7.35.53.

One IP per host:

02.dnsv.jp points to 157.7.33.53.

onlinecourseguide.info - robtex.com