`onlinestudylab.com`

DNSSEC	⚠️ Not signed
A	202.254.236.33^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
		PTR	`sv5032.xserver.jp`
NS	`ns1.xserver.jp` ⭐
		A	202.226.36.164^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.170^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
		A	202.226.36.246^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns1.xserver.jp`
NS	`ns2.xserver.jp`
		A	35.72.43.26^{🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix}
			PTR	`ns2.xserver.jp`
NS	`ns3.xserver.jp`
		A	202.226.36.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns3.xserver.jp`
NS	`ns4.xserver.jp`
		A	183.90.224.226^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	183.90.224.230^{🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.}
		A	202.226.39.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns4.xserver.jp`
NS	`ns5.xserver.jp`
		A	157.112.182.218^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	157.112.182.220^{🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.}
		A	202.226.37.247^{🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.}
			PTR	`ns5.xserver.jp`
MX	`onlinestudylab.com` ⭐
		A	202.254.236.33^{🇯🇵 XSERVER-AS202.254.236.0/22 XSERVER Inc.}
			PTR	`sv5032.xserver.jp`
TXT	`v=spf1 +a:sv5032.xserver.jp +a:onlinestudylab.com +mx include:spf.sender.xser...`
SOA	`ns1.xserver.jp`root@xserver.jp serial=0

`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=1778338381

MX for

onlinestudylab.com

Same first word

onlinestudylab.com

DNS History

14 records (7 active, 7 former)

○NSns01.000webhost.com2017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

○NSns02.000webhost.com2017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

●NSns1.xserver.jp2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

●NSns2.xserver.jp2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

●NSns3.xserver.jp2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

●NSns4.xserver.jp2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

●NSns5.xserver.jp2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

○MXmail.post.000webhost.com2017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

●MXonlinestudylab.com2026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

○A145.14.144.1172017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

○A145.14.145.1542017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

●A202.254.236.332026-04-17 → 2026-05-09 · 3 obs

○ 2017-07-10 10:51:08
● 2026-04-17 05:25:26
● 2026-05-09 15:01:34

○A2a02:4780:dead:4880::12017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

○A2a02:4780:dead:c69::12017-07-10 → 2017-07-10 · 3 obs

● 2017-07-10 10:51:08
○ 2026-04-17 05:25:26
○ 2026-05-09 15:01:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, m.gtld-servers.net, e.gtld-servers.net, c.gtld-servers.net...	-
onlinestudylab.com	ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...	-

✅ Authoritative Response

Server:157.112.182.220

NS records: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp, ns5.xserver.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for onlinestudylab.com (unsigned zone)

⏱️ Timing

Total: 1143ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`202.254.236.33`
NS	5	`ns4.xserver.jp, ns5.xserver.jp...`
MX	1	`onlinestudylab.com (pri: 0)`
TXT	1	`v=spf1 +a:sv5032.xserver.jp +a:onlinestu`
SOA	1	`ns1.xserver.jp root.xserver.jp`

Analysis

Mail Server Role

onlinestudylab.com serves as the mail server for onlinestudylab.com.

IP Addresses

onlinestudylab.com points to a single IP number: 202.254.236.33.

Other host names, for instance ozlink.co.jp, sv5032.xserver.jp, 8sp.jp, www.oracity.net and brandstreet.tokyo share IP numbers with onlinestudylab.com.

Name Servers

onlinestudylab.com is delegated to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.

onlinestudylab.com at least partially shares name servers with other domains, for instance sagamier.com, iremax.jp, inventor-navi.net, tcs2.net and taiko-info.xyz.

Host names with three IP numbers:

ns1.xserver.jp points to: 202.226.36.164, 202.226.36.170 and 202.226.36.246

ns4.xserver.jp points to: 183.90.224.226, 183.90.224.230 and 202.226.39.247

ns5.xserver.jp points to: 157.112.182.218, 157.112.182.220 and 202.226.37.247

Host names with one IP number:

ns2.xserver.jp points to: 35.72.43.26

ns3.xserver.jp points to: 202.226.36.247

Mail Servers

A single mail server handles onlinestudylab.com.

onlinestudylab.com points to a single IP: 202.254.236.33.

onlinestudylab.com - robtex.com