criticalblue.com - robtex.com

criticalblue.com

DNSSEC⚠️ Not signed
A3.171.76.27🇺🇸 Amazon
PTRserver-3-171-76-27.iad89.r.cloudfront.net
A3.171.76.53🇺🇸 Amazon
A3.171.76.88🇺🇸 Amazon
A3.171.76.97🇺🇸 Amazon
NSns-356.awsdns-44.com ⭐
A2600:9000:5301:6400::1🇺🇸 Amazon
PTRns-356.awsdns-44.com
A205.251.193.100🇺🇸 Amazon
PTRns-356.awsdns-44.com
NSns-1051.awsdns-03.org
A2600:9000:5304:1b00::1🇺🇸 Amazon
PTRns-1051.awsdns-03.org
A205.251.196.27🇺🇸 Amazon
PTRns-1051.awsdns-03.org
NSns-1798.awsdns-32.co.uk
A2600:9000:5307:600::1🇺🇸 Amazon
PTRns-1798.awsdns-32.co.uk
A205.251.199.6🇺🇸 Amazon
PTRns-1798.awsdns-32.co.uk
NSns-976.awsdns-58.net
A2600:9000:5303:d000::1🇺🇸 Amazon
PTRns-976.awsdns-58.net
A205.251.195.208🇺🇸 Amazon
PTRns-976.awsdns-58.net
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google
PTRgg-in-f27.1e100.net
TXTgoogle-site-verification=LPcJAxptMAEygCnLGat-FY1DG44eXeubPoFXUz55T8Y
TXTgoogle-site-verification=ZZHHvqEBSX4hop1byz7AcwCIPcTSjTUNvHQGvQKPxYc
TXTgoogle-site-verification=ba9Lof9V9AcpuiRBux1fpfH3ZECoc5GRaCpgVube0N0
TXTv=spf1 include:amazonses.com include:2449407.spf08.hubspotemail.net include:_...
SOAns-356.awsdns-44.comawsdns-hostmaster@amazon.com serial=1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1771291435
WOT: SAFE (61/100)

Up

www.criticalblue.com

Same first word

criticalblue.com
criticalblue.co.uk

DNS History

41 records (13 active, 28 former)

200920112013201520172019202120232025NSns-1051.awsdns-03.orgns-1798.awsdns-32.co.ukns-356.awsdns-44.comns-976.awsdns-58.netns-1437.awsdns-51.orgns-1739.awsdns-25.co.ukns-480.awsdns-60.comns-917.awsdns-50.netns1.easypost.comns1.namecity.comns2.namecity.comns3.easypost.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.commail.criticalblue.commx2.mailhop.orgA3.171.76.273.171.76.533.171.76.883.171.76.9713.33.153.2113.33.153.2413.33.153.6113.33.153.6446.101.19.21552.222.244.2352.222.244.5452.222.244.5852.222.244.9352.84.0.10552.84.0.19352.84.0.20352.84.0.2252.84.0.5052.84.0.6052.84.0.7052.84.0.8562.233.121.75
●NSns-1051.awsdns-03.org2026-02-15 → 2026-02-22 · 3 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
● 2026-02-22 04:22:56
○NSns-1437.awsdns-51.org2017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○NSns-1739.awsdns-25.co.uk2017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
●NSns-1798.awsdns-32.co.uk2026-02-15 → 2026-02-22 · 3 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
● 2026-02-22 04:22:56
●NSns-356.awsdns-44.com2026-02-15 → 2026-02-22 · 3 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
● 2026-02-22 04:22:56
○NSns-480.awsdns-60.com2017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○NSns-917.awsdns-50.net2017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
●NSns-976.awsdns-58.net2026-02-15 → 2026-02-22 · 3 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
● 2026-02-22 04:22:56
○NSns1.easypost.com2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 10:21:50
○ 2015-06-20 12:13:00
○ 2026-02-22 04:22:56
○NSns1.namecity.com2015-06-20 → 2016-06-18 · 5 obs
○ 2008-03-20 10:21:50
● 2015-06-20 12:13:00
● 2016-06-18 03:02:42
○ 2017-04-20 06:42:42
○ 2026-02-22 04:22:56
○NSns2.namecity.com2015-06-20 → 2016-06-18 · 5 obs
○ 2008-03-20 10:21:50
● 2015-06-20 12:13:00
● 2016-06-18 03:02:42
○ 2017-04-20 06:42:42
○ 2026-02-22 04:22:56
○NSns3.easypost.com2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 10:21:50
○ 2015-06-20 12:13:00
○ 2026-02-22 04:22:56
●MXalt1.aspmx.l.google.com2017-04-20 → 2026-02-22 · 3 obs
○ 2015-06-20 12:13:00
● 2017-04-20 06:42:42
● 2026-02-22 04:22:56
●MXalt2.aspmx.l.google.com2017-04-20 → 2026-02-22 · 3 obs
○ 2015-06-20 12:13:00
● 2017-04-20 06:42:42
● 2026-02-22 04:22:56
●MXalt3.aspmx.l.google.com2017-04-20 → 2026-02-22 · 3 obs
○ 2015-06-20 12:13:00
● 2017-04-20 06:42:42
● 2026-02-22 04:22:56
●MXalt4.aspmx.l.google.com2017-04-20 → 2026-02-22 · 3 obs
○ 2015-06-20 12:13:00
● 2017-04-20 06:42:42
● 2026-02-22 04:22:56
●MXaspmx.l.google.com2017-04-20 → 2026-02-22 · 3 obs
○ 2015-06-20 12:13:00
● 2017-04-20 06:42:42
● 2026-02-22 04:22:56
○MXmail.criticalblue.com2015-06-20 → 2017-04-20 · 5 obs
○ 2008-03-20 10:21:50
● 2015-06-20 12:13:00
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○MXmx2.mailhop.org2015-06-20 → 2017-04-20 · 5 obs
○ 2008-03-20 10:21:50
● 2015-06-20 12:13:00
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A13.33.153.212026-02-15 → 2026-02-19 · 8 obs
○ 2026-02-15 20:59:12
● 2026-02-15 23:51:04
● 2026-02-16 14:02:42
○ 2026-02-17 05:51:20
● 2026-02-18 13:59:44
● 2026-02-19 19:27:32
○ 2026-02-20 03:54:02
○ 2026-02-22 04:22:56
○A13.33.153.242026-02-15 → 2026-02-19 · 8 obs
○ 2026-02-15 20:59:12
● 2026-02-15 23:51:04
● 2026-02-16 14:02:42
○ 2026-02-17 05:51:20
● 2026-02-18 13:59:44
● 2026-02-19 19:27:32
○ 2026-02-20 03:54:02
○ 2026-02-22 04:22:56
○A13.33.153.612026-02-15 → 2026-02-19 · 8 obs
○ 2026-02-15 20:59:12
● 2026-02-15 23:51:04
● 2026-02-16 14:02:42
○ 2026-02-17 05:51:20
● 2026-02-18 13:59:44
● 2026-02-19 19:27:32
○ 2026-02-20 03:54:02
○ 2026-02-22 04:22:56
○A13.33.153.642026-02-15 → 2026-02-19 · 8 obs
○ 2026-02-15 20:59:12
● 2026-02-15 23:51:04
● 2026-02-16 14:02:42
○ 2026-02-17 05:51:20
● 2026-02-18 13:59:44
● 2026-02-19 19:27:32
○ 2026-02-20 03:54:02
○ 2026-02-22 04:22:56
●A3.171.76.272026-02-20 → 2026-02-22 · 5 obs
○ 2026-02-19 19:27:32
● 2026-02-20 03:54:02
○ 2026-02-21 06:08:12
● 2026-02-22 02:34:28
● 2026-02-22 04:22:56
●A3.171.76.532026-02-20 → 2026-02-22 · 5 obs
○ 2026-02-19 19:27:32
● 2026-02-20 03:54:02
○ 2026-02-21 06:08:12
● 2026-02-22 02:34:28
● 2026-02-22 04:22:56
●A3.171.76.882026-02-20 → 2026-02-22 · 5 obs
○ 2026-02-19 19:27:32
● 2026-02-20 03:54:02
○ 2026-02-21 06:08:12
● 2026-02-22 02:34:28
● 2026-02-22 04:22:56
●A3.171.76.972026-02-20 → 2026-02-22 · 5 obs
○ 2026-02-19 19:27:32
● 2026-02-20 03:54:02
○ 2026-02-21 06:08:12
● 2026-02-22 02:34:28
● 2026-02-22 04:22:56
○A46.101.19.2152015-06-20 → 2016-06-18 · 5 obs
○ 2008-03-20 10:21:50
● 2015-06-20 12:13:00
● 2016-06-18 03:02:42
○ 2017-04-20 06:42:42
○ 2026-02-22 04:22:56
○A52.222.244.232026-02-15 → 2026-02-21 · 10 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
○ 2026-02-15 23:51:04
○ 2026-02-16 14:02:42
● 2026-02-17 05:51:20
○ 2026-02-18 13:59:44
○ 2026-02-20 03:54:02
● 2026-02-21 06:08:12
○ 2026-02-22 02:34:28
○ 2026-02-22 04:22:56
○A52.222.244.542026-02-15 → 2026-02-21 · 10 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
○ 2026-02-15 23:51:04
○ 2026-02-16 14:02:42
● 2026-02-17 05:51:20
○ 2026-02-18 13:59:44
○ 2026-02-20 03:54:02
● 2026-02-21 06:08:12
○ 2026-02-22 02:34:28
○ 2026-02-22 04:22:56
○A52.222.244.582026-02-15 → 2026-02-21 · 10 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
○ 2026-02-15 23:51:04
○ 2026-02-16 14:02:42
● 2026-02-17 05:51:20
○ 2026-02-18 13:59:44
○ 2026-02-20 03:54:02
● 2026-02-21 06:08:12
○ 2026-02-22 02:34:28
○ 2026-02-22 04:22:56
○A52.222.244.932026-02-15 → 2026-02-21 · 10 obs
○ 2017-04-20 06:42:42
● 2026-02-15 20:59:12
○ 2026-02-15 23:51:04
○ 2026-02-16 14:02:42
● 2026-02-17 05:51:20
○ 2026-02-18 13:59:44
○ 2026-02-20 03:54:02
● 2026-02-21 06:08:12
○ 2026-02-22 02:34:28
○ 2026-02-22 04:22:56
○A52.84.0.1052017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.1932017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.2032017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.222017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.502017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.602017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.702017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A52.84.0.852017-04-20 → 2017-04-20 · 4 obs
○ 2016-06-18 03:02:42
● 2017-04-20 06:42:42
○ 2026-02-15 20:59:12
○ 2026-02-22 04:22:56
○A62.233.121.752008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 10:21:50
○ 2015-06-20 12:13:00
○ 2026-02-22 04:22:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
criticalblue.comns-356.awsdns-44.com, ns-976.awsdns-58.net, ns-1798.awsdns-32.co.uk, ns-1051.awsdns-03.org1 record

✅ Authoritative Response

Server: 205.251.196.27

NS records: ns-356.awsdns-44.com, ns-976.awsdns-58.net, ns-1798.awsdns-32.co.uk, ns-1051.awsdns-03.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for criticalblue.com (unsigned zone)

⏱️ Timing

Total: 337ms | Queries: -

📄 Records

TypeCountSample Data
A43.171.76.97, 3.171.76.27...
NS4ns-1051.awsdns-03.org, ns-1798.awsdns-32.co.uk...
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT4google-site-verification=LPcJAxptMAEygCn, google-site-verification=ZZHHvqEBSX4hop1...
SOA1ns-356.awsdns-44.com awsdns-hostmaster.a

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-356.awsdns-44.com)

AI analysis

criticalblue.com is the parent of www.criticalblue.com.

Four IP numbers are pointed to by criticalblue.com: 3.171.76.27, 3.171.76.53, 3.171.76.88 and 3.171.76.97.

other host names including ebc.edu.au, ooahs.com, gradebookk12.com, d3trh2hd43f1pn.cloudfront.net and ambraceramic.com share IP numbers with criticalblue.com.

criticalblue.com is delegated to four name servers: ns-356.awsdns-44.com, ns-976.awsdns-58.net, ns-1051.awsdns-03.org and ns-1798.awsdns-32.co.uk.

criticalblue.com at least partially shares name servers with other domains, for instance bandlist.de, us-east-1-2.telemetry.insights.video.a2z.com, actas-inc.co.jp, ch-host.net and plytix.net.

These name servers are commonly used alongside ns-204.awsdns-25.com and ns-1103.awsdns-09.org.

Host names with two IP numbers:

ns-356.awsdns-44.com points to 2600:9000:5301:6400::1 and 205.251.193.100; ns-976.awsdns-58.net points to 2600:9000:5303:d000::1 and 205.251.195.208; ns-1051.awsdns-03.org points to 2600:9000:5304:1b00::1 and 205.251.196.27; ns-1798.awsdns-32.co.uk points to 2600:9000:5307:600::1 and 205.251.199.6.

criticalblue.com 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.

criticalblue.com shares some mail servers with other domains, at least partially, for instance ns500768.ns500758.ns500698.ns500758.ns500758.ns500735.ns500736.ns500698.ns500735.ns500708.ns500698.ns500708.ns500576.ns500576.ns500619.ns500576.trackreceptor.com, ns500754.ns500742.ns500731.ns500671.ns500704.ns500688.ns500705.ns500705.ns500678.ns500678.ns500678.ns500291.ns500291.ns500291.ns500291.ns500291.ns500131.lustychickser.com, ns500758.ns500759.ns500758.ns500759.ns500758.ns500736.ns500735.ns500735.ns500698.ns500735.ns500576.ns500708.ns500698.ns500698.ns500619.ns500576.trackreceptor.com, fiera.com.au and ns500754.ns500754.ns500742.ns500754.ns500754.ns500731.ns500705.ns500704.ns500704.ns500704.ns500291.ns500671.ns500671.ns500666.tenderladiesbz.com.

these mail servers are often used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IP numbers:

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

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

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

alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26

alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27