r-learning.co.jp - robtex.com

r-learning.co.jp

DNSSEC⚠️ Not signed
A85.131.197.45🇯🇵 XSERVER-AS85.131.192.0/18 XSERVER Inc.
PTRsv16104.xserver.jp
NSns1.xserver.jp ⭐
A202.226.36.164🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.170🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
A202.226.36.246🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns1.xserver.jp
NSns2.xserver.jp
A35.72.43.26🇯🇵 Amazon35.72.0.0/13 EC2 NRT prefix
PTRns2.xserver.jp
NSns3.xserver.jp
A202.226.36.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns3.xserver.jp
NSns4.xserver.jp
A183.90.224.226🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A183.90.224.230🇯🇵 XSERVER-AS183.90.224.0/20 XSERVER Inc.
A202.226.39.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns4.xserver.jp
NSns5.xserver.jp
A157.112.182.218🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A157.112.182.220🇯🇵 XSERVER-AS157.112.176.0/21 XSERVER Inc.
A202.226.37.247🇯🇵 XSERVER-AS202.226.36.0/22 XSERVER Inc.
PTRns5.xserver.jp
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c1b::1b🇺🇸 Google2607:f8b0:4004::/48
PTRwv-in-f27.1e100.net
A192.178.155.27🇺🇸 Google192.178.155.0/24
PTRyuiadrs-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4023:2801::1b🇺🇸 Google2607:f8b0::/32
PTRlcausi-in-f27.1e100.net
A192.178.128.27🇺🇸 Google192.178.128.0/24
PTRlcausi-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4023:3003::1b🇺🇸 Google2607:f8b0::/32
PTRyulnkjt-in-f27.1e100.net
A172.253.145.27🇺🇸 Google172.253.145.0/24
PTRyulnkjt-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:4025:c01::1b🇵🇱 Google2a00:1450:4025::/48
PTRrd-in-f27.1e100.net
A142.250.147.27🇺🇸 Google142.250.147.0/24
PTRrd-in-f27.1e100.net
TXTgoogle-site-verification=as7pfFr7fcS8G5nn6te5ClcUvc9LUWIU6BHhXUsPTtw
TXTv=spf1 ip4:202.222.25.10 include:_spf.google.com ~all
SOAns1.xserver.jproot@xserver.jp serial=0

co.jp

DNSSEC⚠️ Not signed
TXTco.jp.
WOT: SAFE (58/100)

Subdomains

smtp.r-learning.co.jp

Same first word

r-learning.com
r-learning.co.jp

DNS History

18 records (11 active, 7 former)

20162017201820192020202120222023202420252026NSns1.xserver.jpns2.xserver.jpns3.xserver.jpns4.xserver.jpns5.xserver.jpns.dlsv.comns1.gslb2.sakura.ne.jpns2.dlsv.comns2.gslb2.sakura.ne.jpns3.dlsv.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA85.131.197.45
○NSns.dlsv.com2015-10-16 → 2015-12-17 · 5 obs
○ 2015-04-06 15:19:16
● 2015-10-16 04:26:08
● 2015-12-17 07:32:14
○ 2016-03-21 03:26:20
○ 2026-05-13 11:54:16
○NSns1.gslb2.sakura.ne.jp2016-03-21 → 2017-04-20 · 5 obs
○ 2015-12-17 07:32:14
● 2016-03-21 03:26:20
● 2017-04-20 05:29:46
○ 2026-03-28 08:45:26
○ 2026-05-13 11:54:16
●NSns1.xserver.jp2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
○NSns2.dlsv.com2015-10-16 → 2015-12-17 · 5 obs
○ 2015-04-06 15:19:16
● 2015-10-16 04:26:08
● 2015-12-17 07:32:14
○ 2016-03-21 03:26:20
○ 2026-05-13 11:54:16
○NSns2.gslb2.sakura.ne.jp2016-03-21 → 2017-04-20 · 5 obs
○ 2015-12-17 07:32:14
● 2016-03-21 03:26:20
● 2017-04-20 05:29:46
○ 2026-03-28 08:45:26
○ 2026-05-13 11:54:16
●NSns2.xserver.jp2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
○NSns3.dlsv.com2015-04-06 → 2015-12-17 · 4 obs
● 2015-04-06 15:19:16
● 2015-12-17 07:32:14
○ 2016-03-21 03:26:20
○ 2026-05-13 11:54:16
●NSns3.xserver.jp2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
●NSns4.xserver.jp2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
●NSns5.xserver.jp2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
●MXalt1.aspmx.l.google.com2015-04-06 → 2026-05-13 · 2 obs
● 2015-04-06 15:19:16
● 2026-05-13 11:54:16
●MXalt2.aspmx.l.google.com2015-04-06 → 2026-05-13 · 2 obs
● 2015-04-06 15:19:16
● 2026-05-13 11:54:16
●MXalt3.aspmx.l.google.com2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
●MXalt4.aspmx.l.google.com2026-03-28 → 2026-05-13 · 3 obs
○ 2017-04-20 05:29:46
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16
●MXaspmx.l.google.com2015-04-06 → 2026-05-13 · 2 obs
● 2015-04-06 15:19:16
● 2026-05-13 11:54:16
○MXaspmx2.googlemail.com2015-04-06 → 2017-04-20 · 4 obs
● 2015-04-06 15:19:16
● 2017-04-20 05:29:46
○ 2026-03-28 08:45:26
○ 2026-05-13 11:54:16
○MXaspmx3.googlemail.com2015-04-06 → 2017-04-20 · 4 obs
● 2015-04-06 15:19:16
● 2017-04-20 05:29:46
○ 2026-03-28 08:45:26
○ 2026-05-13 11:54:16
●A85.131.197.452026-03-28 → 2026-05-13 · 2 obs
● 2026-03-28 08:45:26
● 2026-05-13 11:54:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
r-learning.co.jpns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp...11 records

✅ Authoritative Response

Server:157.112.182.218

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 r-learning.co.jp (unsigned zone)

⏱️ Timing

Total: 935ms | Queries: -

📄 Records

TypeCountSample Data
A185.131.197.45
NS5ns1.xserver.jp, ns5.xserver.jp...
MX5ALT2.ASPMX.L.GOOGLE.COM (pri: 5), ASPMX.L.GOOGLE.COM (pri: 1)...
TXT2v=spf1 ip4:202.222.25.10 include:_spf.go, google-site-verification=as7pfFr7fcS8G5n
SOA1ns1.xserver.jp root.xserver.jp

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (ns1.xserver.jp, ns1.xserver.jp, ns1.xserver.jp...)

Analysis

Hierarchy

r-learning.co.jp is the parent of smtp.r-learning.co.jp.

IP Addresses

r-learning.co.jp resolves to a single IP: 85.131.197.45.

Other host names, for instance ns1.dailysunny.com, morimoto-tokai.com, shop.5pb.jp, mx.naritashodo.jp and hirano-shikaclinic.com share IP numbers with r-learning.co.jp.

Name Servers

r-learning.co.jp delegates to five name servers: ns1.xserver.jp, ns2.xserver.jp, ns3.xserver.jp, ns4.xserver.jp and ns5.xserver.jp.

r-learning.co.jp shares some name servers with other domains, for example akachanfude.net, 32search.com, bar-landscape.com, sakura-soap.com and twooo.net.

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

r-learning.co.jp is handled by five mail servers: 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.

r-learning.co.jp shares some mail servers with other domains, at least partially; for instance ns500754.ns500731.ns500731.ns500731.ns500742.ns500671.ns500705.ns500705.ns500291.ns500291.ns500649.ns500666.ns500653.ns500153.tenderladiesbz.com, glamourusus.com, ns500759.ns500698.ns500758.ns500758.ns500698.ns500736.ns500708.ns500698.ns500576.ns500619.ns500619.ns500698.ns500576.ns500619.ns500619.trackreceptor.com, ns500731.ns500671.ns500731.ns500742.ns500742.ns500704.ns500678.ns500671.lusty(0x736c7574)z.com and ns500699.ns500699.ns500699.ns500693.ns500734.ns500693.ns500693.ns500699.ns500699.ns500693.ns500699.ns500588.ns500699.ns500683.ns500588.ns500683.ns500588.dtrkdll.com.

these mail servers are commonly used alongside aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IPs:

Host aspmx.l.google.com has IPs 2607:f8b0:4004:c1b::1b and 192.178.155.27.

Host alt1.aspmx.l.google.com has IPs 2607:f8b0:4023:2801::1b and 192.178.128.27.

Host alt2.aspmx.l.google.com has IPs 2607:f8b0:4023:3003::1b and 172.253.145.27.

Host alt3.aspmx.l.google.com has IPs 2a00:1450:4009:c0f::1a and 192.178.223.27.

Host alt4.aspmx.l.google.com has IPs 2a00:1450:4025:c01::1b and 142.250.147.27.