ct-lab.jp - robtex.com

ct-lab.jp

DNSSEC⚠️ Not signed
A3.5.155.90🇯🇵 Amazon3.5.155.0/24 EC2 Prefix
A3.5.157.70🇯🇵 Amazon3.5.157.0/24 EC2 Prefix
A3.5.157.102🇯🇵 Amazon3.5.157.0/24 EC2 Prefix
A3.5.157.173🇯🇵 Amazon3.5.157.0/24 EC2 Prefix
A3.5.159.3🇯🇵 Amazon3.5.159.0/24 EC2 Prefix
A3.5.159.18🇯🇵 Amazon3.5.159.0/24 EC2 Prefix
A3.5.159.221🇯🇵 Amazon3.5.159.0/24 EC2 Prefix
A52.219.200.11🇯🇵 Amazon52.219.200.0/24 AWS S3
NSns-833.awsdns-40.net ⭐
A2600:9000:5303:4100::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-833.awsdns-40.net
A205.251.195.65🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-833.awsdns-40.net
NSns-1161.awsdns-17.org
A2600:9000:5304:8900::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront
PTRns-1161.awsdns-17.org
A205.251.196.137🇺🇸 Amazon205.251.196.0/24 prefix
PTRns-1161.awsdns-17.org
NSns-1983.awsdns-55.co.uk
A2600:9000:5307:bf00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1983.awsdns-55.co.uk
A205.251.199.191🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1983.awsdns-55.co.uk
NSns-34.awsdns-04.com
A2600:9000:5300:2200::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-34.awsdns-04.com
A205.251.192.34🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-34.awsdns-04.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(20)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(20)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
MXaspmx2.googlemail.com(30)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.27🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f27.1e100.net
MXaspmx3.googlemail.com(30)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.27🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f27.1e100.net
MXaspmx4.googlemail.com(30)
A2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRmj-in-f27.1e100.net
A192.178.152.27🇺🇸 Google192.178.152.0/24
PTRmj-in-f27.1e100.net
MXaspmx5.googlemail.com(30)
A2607:f8b0:4023:403::1b🇺🇸 Google2607:f8b0::/32
PTRgg-in-f27.1e100.net
A142.250.96.26🇺🇸 Google142.250.96.0/24
PTRgg-in-f26.1e100.net
TXTgoogle-site-verification=rTtiabgbP7Knj0xh72mommg7K82UY2pTZCaQOP4wdqc
TXTv=spf1 include:_spf.google.com ~all
SOAns-833.awsdns-40.netawsdns-hostmaster@amazon.com serial=1

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1771290902

Subdomains

www.ct-lab.jp

Same first word

ct-lab.com
ct-lab.jp
ct-lab.ru

Similar names

lta-bc.pl
ct-alb.de
ct-alb.com
act-lb.org
ctb-la.com

DNS History

94 records (19 active, 75 former)

20162017201820192020202120222023202420252026NSns-1161.awsdns-17.orgns-1983.awsdns-55.co.ukns-34.awsdns-04.comns-833.awsdns-40.net01.dnsv.jp02.dnsv.jpMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA3.5.155.903.5.157.1023.5.157.1733.5.157.703.5.159.183.5.159.2213.5.159.352.219.200.113.5.155.2353.5.155.2483.5.155.2513.5.155.563.5.155.753.5.155.803.5.155.93.5.157.1043.5.157.1113.5.157.1173.5.157.1193.5.157.1283.5.157.1363.5.157.1633.5.157.193.5.157.2003.5.157.2173.5.157.2333.5.157.2383.5.157.2433.5.157.53.5.157.533.5.157.783.5.157.853.5.159.1083.5.159.133.5.159.1753.5.159.1773.5.159.1793.5.159.1893.5.159.193.5.159.1953.5.159.2293.5.159.2453.5.159.2493.5.159.403.5.159.503.5.159.6349.212.45.6252.219.1.10452.219.1.2452.219.136.21552.219.136.4452.219.136.6852.219.137.1952.219.137.4752.219.150.7552.219.150.8352.219.150.9952.219.152.15952.219.152.2352.219.16.2452.219.162.1552.219.162.17552.219.162.20752.219.162.24752.219.162.2752.219.162.4352.219.163.5552.219.163.7152.219.163.9552.219.17.1552.219.172.2752.219.199.15952.219.199.16352.219.199.16752.219.199.17552.219.199.1952.219.199.352.219.199.5552.219.199.5952.219.199.7152.219.199.91
○NS01.dnsv.jp2015-08-09 → 2018-05-19 · 4 obs
● 2015-08-09 19:00:34
● 2018-05-19 02:29:06
○ 2026-02-20 04:27:08
○ 2026-03-02 08:56:24
○NS02.dnsv.jp2015-08-09 → 2018-05-19 · 4 obs
● 2015-08-09 19:00:34
● 2018-05-19 02:29:06
○ 2026-02-20 04:27:08
○ 2026-03-02 08:56:24
●NSns-1161.awsdns-17.org2026-02-20 → 2026-03-02 · 3 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
● 2026-03-02 08:56:24
●NSns-1983.awsdns-55.co.uk2026-02-20 → 2026-03-02 · 3 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
● 2026-03-02 08:56:24
●NSns-34.awsdns-04.com2026-02-20 → 2026-03-02 · 3 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
● 2026-03-02 08:56:24
●NSns-833.awsdns-40.net2026-02-20 → 2026-03-02 · 3 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
● 2026-03-02 08:56:24
●MXalt1.aspmx.l.google.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXalt2.aspmx.l.google.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXaspmx.l.google.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXaspmx2.googlemail.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXaspmx3.googlemail.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXaspmx4.googlemail.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
●MXaspmx5.googlemail.com2015-08-09 → 2026-03-02 · 2 obs
● 2015-08-09 19:00:34
● 2026-03-02 08:56:24
○A3.5.155.2352026-02-20 → 2026-02-20 · 4 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-03-02 08:56:24
○A3.5.155.2482026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-24 22:06:52
● 2026-02-28 04:45:30
○ 2026-02-28 07:56:16
○ 2026-03-02 08:56:24
○A3.5.155.2512026-02-20 → 2026-02-24 · 7 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
● 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
○ 2026-03-02 08:56:24
○A3.5.155.562026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
○ 2026-03-02 08:56:24
○A3.5.155.752026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-03-02 08:56:24
○A3.5.155.802026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.155.92026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
●A3.5.155.902026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
●A3.5.157.1022026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.157.1042026-02-28 → 2026-03-01 · 6 obs
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.157.1112026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.157.1172026-02-20 → 2026-02-20 · 4 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-03-02 08:56:24
○A3.5.157.1192026-02-20 → 2026-02-20 · 4 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-03-02 08:56:24
○A3.5.157.1282026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-03-02 08:56:24
○A3.5.157.1362026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
○ 2026-03-02 08:56:24
○A3.5.157.1632026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
○ 2026-03-02 08:56:24
●A3.5.157.1732026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.157.192026-02-20 → 2026-02-20 · 4 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-03-02 08:56:24
○A3.5.157.2002026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 07:56:16
● 2026-02-28 22:01:42
○ 2026-03-01 12:29:00
○ 2026-03-02 08:56:24
○A3.5.157.2172026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
○ 2026-03-02 08:56:24
○A3.5.157.2332026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-24 22:06:52
● 2026-02-28 04:45:30
○ 2026-02-28 07:56:16
○ 2026-03-02 08:56:24
○A3.5.157.2382026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.157.2432026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-24 20:28:48
● 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
○ 2026-03-02 08:56:24
○A3.5.157.52026-02-20 → 2026-02-20 · 4 obs
○ 2018-05-19 02:29:06
● 2026-02-20 04:27:08
○ 2026-02-22 08:29:52
○ 2026-03-02 08:56:24
○A3.5.157.532026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-03-02 08:56:24
●A3.5.157.702026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.157.782026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-24 22:06:52
● 2026-02-28 04:45:30
○ 2026-02-28 07:56:16
○ 2026-03-02 08:56:24
○A3.5.157.852026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
○ 2026-03-02 08:56:24
○A3.5.159.1082026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-03-02 08:56:24
○A3.5.159.132026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-24 20:28:48
● 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
○ 2026-03-02 08:56:24
○A3.5.159.1752026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.159.1772026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
○ 2026-03-02 08:56:24
○A3.5.159.1792026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
●A3.5.159.182026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.159.1892026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.159.192026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 07:56:16
● 2026-02-28 22:01:42
○ 2026-03-01 12:29:00
○ 2026-03-02 08:56:24
○A3.5.159.1952026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-24 22:06:52
● 2026-02-28 04:45:30
○ 2026-02-28 07:56:16
○ 2026-03-02 08:56:24
●A3.5.159.2212026-03-02 → 2026-03-02 · 2 obs
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.159.2292026-02-28 → 2026-02-28 · 5 obs
○ 2026-02-20 04:27:08
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
○ 2026-03-02 08:56:24
○A3.5.159.2452026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A3.5.159.2492026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
●A3.5.159.32026-03-02 → 2026-03-02 · 3 obs
○ 2026-02-20 04:27:08
○ 2026-03-02 03:34:36
● 2026-03-02 08:56:24
○A3.5.159.402026-02-20 → 2026-03-02 · 2 obs
○ 2026-02-20 04:27:08
○ 2026-03-02 08:56:24
○A3.5.159.502026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-24 20:28:48
● 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
○ 2026-03-02 08:56:24
○A3.5.159.632026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
○ 2026-03-02 08:56:24
○A49.212.45.622015-08-09 → 2018-05-19 · 4 obs
● 2015-08-09 19:00:34
● 2018-05-19 02:29:06
○ 2026-02-20 04:27:08
○ 2026-03-02 08:56:24
○A52.219.1.1042026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A52.219.1.242026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-03-02 08:56:24
○A52.219.136.2152026-02-24 → 2026-02-24 · 4 obs
○ 2026-02-24 20:28:48
● 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
○ 2026-03-02 08:56:24
○A52.219.136.442026-03-01 → 2026-03-01 · 5 obs
○ 2026-02-20 04:27:08
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A52.219.136.682026-03-02 → 2026-03-02 · 3 obs
○ 2026-03-01 12:29:00
● 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A52.219.137.192026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 07:56:16
● 2026-02-28 22:01:42
○ 2026-03-01 12:29:00
○ 2026-03-02 08:56:24
○A52.219.137.472026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-28 07:56:16
● 2026-02-28 22:01:42
○ 2026-03-01 12:29:00
○ 2026-03-02 08:56:24
○A52.219.150.752026-02-28 → 2026-02-28 · 4 obs
○ 2026-02-24 22:06:52
● 2026-02-28 04:45:30
○ 2026-02-28 07:56:16
○ 2026-03-02 08:56:24
○A52.219.150.832026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
○ 2026-03-02 08:56:24
○A52.219.150.992026-02-24 → 2026-02-28 · 7 obs
○ 2026-02-22 08:29:52
● 2026-02-24 20:28:48
○ 2026-02-24 22:06:52
○ 2026-02-28 04:45:30
● 2026-02-28 07:56:16
○ 2026-02-28 22:01:42
○ 2026-03-02 08:56:24
○A52.219.152.1592026-03-01 → 2026-03-01 · 4 obs
○ 2026-02-28 22:01:42
● 2026-03-01 12:29:00
○ 2026-03-02 03:34:36
○ 2026-03-02 08:56:24
○A52.219.152.232026-02-22 → 2026-02-22 · 4 obs
○ 2026-02-20 04:27:08
● 2026-02-22 08:29:52
○ 2026-02-24 20:28:48
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🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jpe.dns.jp, g.dns.jp, c.dns.jp, a.dns.jp...-
ct-lab.jpns-34.awsdns-04.com, ns-833.awsdns-40.net, ns-1161.awsdns-17.org, ns-1983.awsdns-55.co.uk-

✅ Authoritative Response

Server: 205.251.195.65

NS records: ns-34.awsdns-04.com, ns-833.awsdns-40.net, ns-1161.awsdns-17.org, ns-1983.awsdns-55.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ct-lab.jp (unsigned zone)

⏱️ Timing

Total: 1606ms | Queries: -

📄 Records

TypeCountSample Data
A852.219.136.136, 52.219.172.11...
NS4ns-1161.awsdns-17.org, ns-1983.awsdns-55.co.uk...
MX7aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...
TXT2google-site-verification=rTtiabgbP7Knj0x, v=spf1 include:_spf.google.com ~all
SOA1ns-833.awsdns-40.net awsdns-hostmaster.a

Analysis

Hierarchy

www.ct-lab.jp is a child of ct-lab.jp.

IP Addresses

ct-lab.jp resolves to eight IP numbers: 3.5.155.90, 3.5.157.70, 3.5.157.102, 3.5.157.173, 3.5.159.3, 3.5.159.18, 3.5.159.221 and 52.219.200.11.

Other host names, for instance indiesnavi.com, genkidajo.com, naoao.studio, www.mmmcorp.co.jp and newstapa.co.kr share IP numbers with ct-lab.jp.

Name Servers

ct-lab.jp delegates to four name servers: ns-34.awsdns-04.com, ns-833.awsdns-40.net, ns-1161.awsdns-17.org and ns-1983.awsdns-55.co.uk.

ct-lab.jp at least partially shares name servers with other domains, including worldhikerscorp.com, littlebigtown.com, wight-sso.com, acras.com.br and 2.181.44.173.in-addr.arpa.

These name servers are commonly used together with the name servers ns-967.awsdns-56.net, ns-1315.awsdns-36.org, ns-1761.awsdns-28.co.uk and ns-667.awsdns-19.net.

Host names with two IP numbers: ns-34.awsdns-04.com points to 2600:9000:5300:2200::1 and 205.251.192.34; ns-833.awsdns-40.net points to 2600:9000:5303:4100::1 and 205.251.195.65; ns-1161.awsdns-17.org points to 2600:9000:5304:8900::1 and 205.251.196.137; ns-1983.awsdns-55.co.uk points to 2600:9000:5307:bf00::1 and 205.251.199.191.

Mail Servers

ct-lab.jp is handled by seven mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com, aspmx5.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

ct-lab.jp shares at least some mail servers with other domains, for example jjwarren.org, biolinka.com, safekapital.com, ns500759.ns500759.ns500758.ns500759.ns500698.ns500698.ns500735.ns500698.ns500736.ns500735.ns500576.ns500576.ns500686.ns500619.ns500619.trackreceptor.com and multi-rpc.com.

These mail servers are often used with alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Hostnames with two IP numbers:

Hostname aspmx2.googlemail.com points to 2607:f8b0:4003:c30::1b and 74.125.27.27.

Hostname aspmx3.googlemail.com points to 2607:f8b0:4001:c70::1a and 192.178.209.27.

Hostname aspmx4.googlemail.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.27.

Hostname aspmx5.googlemail.com points to 2607:f8b0:4023:403::1b and 142.250.96.26.

Hostname aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.

Hostname alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.

Hostname alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.

Hostnames that point to 2607:f8b0:4003:c30::1b: aspmx2.googlemail.com and alt1.aspmx.l.google.com.

Hostnames that point to 2607:f8b0:4001:c70::1a: aspmx3.googlemail.com and alt2.aspmx.l.google.com.