mcdowell.instructure.com - robtex.com

mcdowell.instructure.com

DNSSEC⚠️ Not signed
A13.227.110.2🇺🇸 Amazon13.227.104.0/21 - Cloudfront
PTRserver-13-227-110-2.gru3.r.cloudfront.net
A13.227.110.27🇺🇸 Amazon13.227.104.0/21 - Cloudfront
A13.227.110.43🇺🇸 Amazon13.227.104.0/21 - Cloudfront
A13.227.110.77🇺🇸 Amazon13.227.104.0/21 - Cloudfront

instructure.com

DNSSEC⚠️ Not signed
A151.101.2.132🇺🇸 Fastly151.101.0.0/22
A151.101.66.132🇺🇸 Fastly151.101.64.0/22
NSns-2.awsdns-00.com
NSns-1354.awsdns-41.org
NSns-1799.awsdns-32.co.uk
NSns-996.awsdns-60.net
MXaspmx.l.google.com
MXalt1.aspmx.l.google.com(10)
MXalt2.aspmx.l.google.com(10)
MXaspmx2.googlemail.com(20)
MXaspmx3.googlemail.com(20)
TXT2acd5847c66f4325be05af390213b8c7.instructure.com
TXTMS=ms20700021
TXTZOOM_verify_Up1Opd4-S9ChtRORps16qw
TXTadobe-idp-site-verification=4287460e7429c97ad75b995bdef6b0d7ff1c9b541946abfaf...
TXTanthropic-domain-verification-2pz98m=hO4bmZQTC5gutJZcanKeagAWR
TXTanthropic-domain-verification-4mh4xs=A4vkPXqJIA4VVi9GAbxDEPohr
TXTanthropic-domain-verification-pz1pr3=sZkvFuBJeSdmEXoj4KJYYQW8Z
TXTanthropic-domain-verification-vz61c8=kfBobb4vvH2M9xtsZhFajtKHr
TXTapple-domain-verification=8oZZjgKWADRgkWui
TXTastro-domain-verification=cmbjhzn9b0c0h01pimts1v2h1
TXTatlassian-domain-verification=pS8CbCDhL3R1mMujl07LwhltWFcJtks8mrBa7l/1uocODR9...
TXTbugcrowd-verification=817deedf9414a9ea878ff255c42a9afa
TXTcanva-site-verification=jRPvv0c9AZGTaJIIPIpfAQ
TXTcanva-site-verification=jiASD5n0aNnvUnfIP1w4XA
TXTdocker-verification=7555bc65-ce7a-4ed2-8028-4bf0274d2c5b
TXTdocusign=1ca86ab9-2ddb-4d63-b719-4798811390ca
TXTdrift-domain-verification=608941e9992460f0ccd58daa1decf1808863da188a929106582...
TXTfastly-domain-delegation-jpv3oeoqr3aouxwkbhpb-00480650-2025-07-31
TXTfigma-domain-verification=848b9254b032bfe488e955a140a8a63cb345186c3c69b7200f7...
TXTgoogle-site-verification=3SDlSr_fW_6bYm0BDDK4ZXs6I5yKtB4WyXL3GNozx8I
TXTgoogle-site-verification=Som6bbrVvI5NLh3lTcpNSbp6_0GpFezQQ9xo6CrSHOQ
TXTgoogle-site-verification=WSlNW84_Zm6mbOaM35pQyLJUt7-OtVXNjzXe9LT-eJI
TXTgoogle-site-verification=bC89ByaBs616PDmJLrSUG5RS3fyA8agwCtXch9G0GL0
TXThcp-domain-verification=24de36f1e2e1ad573ac320a62707e7ec8ac0cce2dccf7985914a8...
TXTjamf-site-verification=-bAufptjYdQAfzF-s7PBtQ
TXTm6bll7f2q2d2uidl6cq273dma0
TXTmiro-verification=0ee36f655f5ce0499683c255714fcdbe990af0e0
TXTmongodb-site-verification=UyyatYgRcdnc3W9g8StgD1OK8wfcIouE
TXTonetrust-domain-verification=5ef48d8081ac4ab6adce9ed80c92f4e5
TXTopenai-domain-verification=dv-wb5qFISTkDoktTMXLsDMVuZ0
TXTpendo-domain-verification=2l9wI_SzXdfdzA0ZCZUES4O0FS0
TXTsprout-social-715adb3f-6166-4bc5-b3d9-b1faf326db31
TXTv=spf1 include:_spf.google.com include:amazonses.com include:_spf.q4press.com...
TXTzapier-domain-verification-challenge=fe79b183-171c-432c-bf5d-48b3e73fd0af
TXTzoho-verification=zb08654551.zmverify.zoho.com
SOAns-2.awsdns-00.comawsdns-hostmaster@amazon.com serial=1
WOT: SAFE (87/100)
rank #1357 globally
rank #730 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,120

Same first word

Similar names

DNS History

25 records (4 active, 21 former)

20192020202120222023202420252026A13.227.110.213.227.110.2713.227.110.4313.227.110.77108.158.186.116108.158.186.2108.158.186.34108.158.186.9913.33.109.11713.33.109.4413.33.109.9413.33.109.9718.154.110.11018.154.110.318.154.110.4918.154.110.5218.160.18.10218.160.18.1118.160.18.11918.160.18.12699.86.12.12999.86.12.299.86.12.2099.86.12.88CNAMEcluster36.instructure.com
A108.158.186.1162026-05-13 → 2026-05-17 · 7 obs
○ 2026-05-13 22:08:08
● 2026-05-13 22:53:30
○ 2026-05-14 00:20:36
○ 2026-05-17 09:36:20
● 2026-05-17 10:27:52
○ 2026-05-17 11:44:40
○ 2026-05-31 18:11:36
A108.158.186.22026-05-13 → 2026-05-17 · 7 obs
○ 2026-05-13 22:08:08
● 2026-05-13 22:53:30
○ 2026-05-14 00:20:36
○ 2026-05-17 09:36:20
● 2026-05-17 10:27:52
○ 2026-05-17 11:44:40
○ 2026-05-31 18:11:36
A108.158.186.342026-05-13 → 2026-05-17 · 7 obs
○ 2026-05-13 22:08:08
● 2026-05-13 22:53:30
○ 2026-05-14 00:20:36
○ 2026-05-17 09:36:20
● 2026-05-17 10:27:52
○ 2026-05-17 11:44:40
○ 2026-05-31 18:11:36
A108.158.186.992026-05-13 → 2026-05-17 · 7 obs
○ 2026-05-13 22:08:08
● 2026-05-13 22:53:30
○ 2026-05-14 00:20:36
○ 2026-05-17 09:36:20
● 2026-05-17 10:27:52
○ 2026-05-17 11:44:40
○ 2026-05-31 18:11:36
A13.227.110.22026-05-02 → 2026-05-31 · 9 obs
● 2026-05-02 14:59:50
○ 2026-05-02 16:28:54
○ 2026-05-29 08:05:16
● 2026-05-29 15:36:56
● 2026-05-29 21:10:12
○ 2026-05-29 23:21:04
○ 2026-05-31 09:05:42
● 2026-05-31 10:20:46
● 2026-05-31 18:11:36
A13.227.110.272026-05-02 → 2026-05-31 · 9 obs
● 2026-05-02 14:59:50
○ 2026-05-02 16:28:54
○ 2026-05-29 08:05:16
● 2026-05-29 15:36:56
● 2026-05-29 21:10:12
○ 2026-05-29 23:21:04
○ 2026-05-31 09:05:42
● 2026-05-31 10:20:46
● 2026-05-31 18:11:36
A13.227.110.432026-05-02 → 2026-05-31 · 9 obs
● 2026-05-02 14:59:50
○ 2026-05-02 16:28:54
○ 2026-05-29 08:05:16
● 2026-05-29 15:36:56
● 2026-05-29 21:10:12
○ 2026-05-29 23:21:04
○ 2026-05-31 09:05:42
● 2026-05-31 10:20:46
● 2026-05-31 18:11:36
A13.227.110.772026-05-02 → 2026-05-31 · 9 obs
● 2026-05-02 14:59:50
○ 2026-05-02 16:28:54
○ 2026-05-29 08:05:16
● 2026-05-29 15:36:56
● 2026-05-29 21:10:12
○ 2026-05-29 23:21:04
○ 2026-05-31 09:05:42
● 2026-05-31 10:20:46
● 2026-05-31 18:11:36
A13.33.109.1172026-05-05 → 2026-05-17 · 19 obs
○ 2026-05-04 22:32:18
● 2026-05-05 00:33:52
○ 2026-05-05 01:41:24
○ 2026-05-05 23:08:22
● 2026-05-06 00:08:34
○ 2026-05-06 01:20:18
○ 2026-05-06 23:53:06
● 2026-05-07 00:50:54
○ 2026-05-07 01:56:36
○ 2026-05-08 23:47:38
● 2026-05-09 00:38:10
○ 2026-05-09 01:54:52
○ 2026-05-09 11:37:46
● 2026-05-09 12:42:28
○ 2026-05-09 14:48:26
○ 2026-05-17 17:15:14
● 2026-05-17 17:50:48
○ 2026-05-17 19:23:28
○ 2026-05-31 18:11:36
A13.33.109.442026-05-05 → 2026-05-17 · 19 obs
○ 2026-05-04 22:32:18
● 2026-05-05 00:33:52
○ 2026-05-05 01:41:24
○ 2026-05-05 23:08:22
● 2026-05-06 00:08:34
○ 2026-05-06 01:20:18
○ 2026-05-06 23:53:06
● 2026-05-07 00:50:54
○ 2026-05-07 01:56:36
○ 2026-05-08 23:47:38
● 2026-05-09 00:38:10
○ 2026-05-09 01:54:52
○ 2026-05-09 11:37:46
● 2026-05-09 12:42:28
○ 2026-05-09 14:48:26
○ 2026-05-17 17:15:14
● 2026-05-17 17:50:48
○ 2026-05-17 19:23:28
○ 2026-05-31 18:11:36
A13.33.109.942026-05-05 → 2026-05-17 · 19 obs
○ 2026-05-04 22:32:18
● 2026-05-05 00:33:52
○ 2026-05-05 01:41:24
○ 2026-05-05 23:08:22
● 2026-05-06 00:08:34
○ 2026-05-06 01:20:18
○ 2026-05-06 23:53:06
● 2026-05-07 00:50:54
○ 2026-05-07 01:56:36
○ 2026-05-08 23:47:38
● 2026-05-09 00:38:10
○ 2026-05-09 01:54:52
○ 2026-05-09 11:37:46
● 2026-05-09 12:42:28
○ 2026-05-09 14:48:26
○ 2026-05-17 17:15:14
● 2026-05-17 17:50:48
○ 2026-05-17 19:23:28
○ 2026-05-31 18:11:36
A13.33.109.972026-05-05 → 2026-05-17 · 19 obs
○ 2026-05-04 22:32:18
● 2026-05-05 00:33:52
○ 2026-05-05 01:41:24
○ 2026-05-05 23:08:22
● 2026-05-06 00:08:34
○ 2026-05-06 01:20:18
○ 2026-05-06 23:53:06
● 2026-05-07 00:50:54
○ 2026-05-07 01:56:36
○ 2026-05-08 23:47:38
● 2026-05-09 00:38:10
○ 2026-05-09 01:54:52
○ 2026-05-09 11:37:46
● 2026-05-09 12:42:28
○ 2026-05-09 14:48:26
○ 2026-05-17 17:15:14
● 2026-05-17 17:50:48
○ 2026-05-17 19:23:28
○ 2026-05-31 18:11:36
A18.154.110.1102026-05-19 → 2026-05-31 · 18 obs
○ 2026-05-19 07:17:30
● 2026-05-19 08:24:22
● 2026-05-21 12:25:46
○ 2026-05-21 13:14:08
● 2026-05-21 15:34:18
● 2026-05-21 17:55:02
○ 2026-05-21 18:49:44
● 2026-05-21 19:26:34
● 2026-05-26 09:36:04
○ 2026-05-26 11:48:56
● 2026-05-26 12:52:58
● 2026-05-29 08:05:16
○ 2026-05-29 15:36:56
○ 2026-05-29 21:10:12
● 2026-05-29 23:21:04
● 2026-05-31 09:05:42
○ 2026-05-31 10:20:46
○ 2026-05-31 18:11:36
A18.154.110.32026-05-19 → 2026-05-31 · 18 obs
○ 2026-05-19 07:17:30
● 2026-05-19 08:24:22
● 2026-05-21 12:25:46
○ 2026-05-21 13:14:08
● 2026-05-21 15:34:18
● 2026-05-21 17:55:02
○ 2026-05-21 18:49:44
● 2026-05-21 19:26:34
● 2026-05-26 09:36:04
○ 2026-05-26 11:48:56
● 2026-05-26 12:52:58
● 2026-05-29 08:05:16
○ 2026-05-29 15:36:56
○ 2026-05-29 21:10:12
● 2026-05-29 23:21:04
● 2026-05-31 09:05:42
○ 2026-05-31 10:20:46
○ 2026-05-31 18:11:36
A18.154.110.492026-05-19 → 2026-05-31 · 18 obs
○ 2026-05-19 07:17:30
● 2026-05-19 08:24:22
● 2026-05-21 12:25:46
○ 2026-05-21 13:14:08
● 2026-05-21 15:34:18
● 2026-05-21 17:55:02
○ 2026-05-21 18:49:44
● 2026-05-21 19:26:34
● 2026-05-26 09:36:04
○ 2026-05-26 11:48:56
● 2026-05-26 12:52:58
● 2026-05-29 08:05:16
○ 2026-05-29 15:36:56
○ 2026-05-29 21:10:12
● 2026-05-29 23:21:04
● 2026-05-31 09:05:42
○ 2026-05-31 10:20:46
○ 2026-05-31 18:11:36
A18.154.110.522026-05-19 → 2026-05-31 · 18 obs
○ 2026-05-19 07:17:30
● 2026-05-19 08:24:22
● 2026-05-21 12:25:46
○ 2026-05-21 13:14:08
● 2026-05-21 15:34:18
● 2026-05-21 17:55:02
○ 2026-05-21 18:49:44
● 2026-05-21 19:26:34
● 2026-05-26 09:36:04
○ 2026-05-26 11:48:56
● 2026-05-26 12:52:58
● 2026-05-29 08:05:16
○ 2026-05-29 15:36:56
○ 2026-05-29 21:10:12
● 2026-05-29 23:21:04
● 2026-05-31 09:05:42
○ 2026-05-31 10:20:46
○ 2026-05-31 18:11:36
A18.160.18.1022026-05-21 → 2026-05-21 · 7 obs
○ 2026-05-21 12:25:46
● 2026-05-21 13:14:08
○ 2026-05-21 15:34:18
○ 2026-05-21 17:55:02
● 2026-05-21 18:49:44
○ 2026-05-21 19:26:34
○ 2026-05-31 18:11:36
A18.160.18.112026-05-21 → 2026-05-21 · 7 obs
○ 2026-05-21 12:25:46
● 2026-05-21 13:14:08
○ 2026-05-21 15:34:18
○ 2026-05-21 17:55:02
● 2026-05-21 18:49:44
○ 2026-05-21 19:26:34
○ 2026-05-31 18:11:36
A18.160.18.1192026-05-21 → 2026-05-21 · 7 obs
○ 2026-05-21 12:25:46
● 2026-05-21 13:14:08
○ 2026-05-21 15:34:18
○ 2026-05-21 17:55:02
● 2026-05-21 18:49:44
○ 2026-05-21 19:26:34
○ 2026-05-31 18:11:36
A18.160.18.1262026-05-21 → 2026-05-21 · 7 obs
○ 2026-05-21 12:25:46
● 2026-05-21 13:14:08
○ 2026-05-21 15:34:18
○ 2026-05-21 17:55:02
● 2026-05-21 18:49:44
○ 2026-05-21 19:26:34
○ 2026-05-31 18:11:36
A99.86.12.1292026-05-02 → 2026-05-26 · 32 obs
○ 2026-05-02 14:59:50
● 2026-05-02 16:28:54
● 2026-05-04 22:32:18
○ 2026-05-05 00:33:52
● 2026-05-05 01:41:24
● 2026-05-05 23:08:22
○ 2026-05-06 00:08:34
● 2026-05-06 01:20:18
● 2026-05-06 23:53:06
○ 2026-05-07 00:50:54
● 2026-05-07 01:56:36
● 2026-05-08 23:47:38
○ 2026-05-09 00:38:10
● 2026-05-09 01:54:52
● 2026-05-09 11:37:46
○ 2026-05-09 12:42:28
● 2026-05-09 14:48:26
● 2026-05-13 22:08:08
○ 2026-05-13 22:53:30
● 2026-05-14 00:20:36
● 2026-05-17 09:36:20
○ 2026-05-17 10:27:52
● 2026-05-17 11:44:40
● 2026-05-17 17:15:14
○ 2026-05-17 17:50:48
● 2026-05-17 19:23:28
● 2026-05-19 07:17:30
○ 2026-05-19 08:24:22
○ 2026-05-26 09:36:04
● 2026-05-26 11:48:56
○ 2026-05-26 12:52:58
○ 2026-05-31 18:11:36
A99.86.12.22026-05-02 → 2026-05-26 · 32 obs
○ 2026-05-02 14:59:50
● 2026-05-02 16:28:54
● 2026-05-04 22:32:18
○ 2026-05-05 00:33:52
● 2026-05-05 01:41:24
● 2026-05-05 23:08:22
○ 2026-05-06 00:08:34
● 2026-05-06 01:20:18
● 2026-05-06 23:53:06
○ 2026-05-07 00:50:54
● 2026-05-07 01:56:36
● 2026-05-08 23:47:38
○ 2026-05-09 00:38:10
● 2026-05-09 01:54:52
● 2026-05-09 11:37:46
○ 2026-05-09 12:42:28
● 2026-05-09 14:48:26
● 2026-05-13 22:08:08
○ 2026-05-13 22:53:30
● 2026-05-14 00:20:36
● 2026-05-17 09:36:20
○ 2026-05-17 10:27:52
● 2026-05-17 11:44:40
● 2026-05-17 17:15:14
○ 2026-05-17 17:50:48
● 2026-05-17 19:23:28
● 2026-05-19 07:17:30
○ 2026-05-19 08:24:22
○ 2026-05-26 09:36:04
● 2026-05-26 11:48:56
○ 2026-05-26 12:52:58
○ 2026-05-31 18:11:36
A99.86.12.202026-05-02 → 2026-05-26 · 32 obs
○ 2026-05-02 14:59:50
● 2026-05-02 16:28:54
● 2026-05-04 22:32:18
○ 2026-05-05 00:33:52
● 2026-05-05 01:41:24
● 2026-05-05 23:08:22
○ 2026-05-06 00:08:34
● 2026-05-06 01:20:18
● 2026-05-06 23:53:06
○ 2026-05-07 00:50:54
● 2026-05-07 01:56:36
● 2026-05-08 23:47:38
○ 2026-05-09 00:38:10
● 2026-05-09 01:54:52
● 2026-05-09 11:37:46
○ 2026-05-09 12:42:28
● 2026-05-09 14:48:26
● 2026-05-13 22:08:08
○ 2026-05-13 22:53:30
● 2026-05-14 00:20:36
● 2026-05-17 09:36:20
○ 2026-05-17 10:27:52
● 2026-05-17 11:44:40
● 2026-05-17 17:15:14
○ 2026-05-17 17:50:48
● 2026-05-17 19:23:28
● 2026-05-19 07:17:30
○ 2026-05-19 08:24:22
○ 2026-05-26 09:36:04
● 2026-05-26 11:48:56
○ 2026-05-26 12:52:58
○ 2026-05-31 18:11:36
A99.86.12.882026-05-02 → 2026-05-26 · 32 obs
○ 2026-05-02 14:59:50
● 2026-05-02 16:28:54
● 2026-05-04 22:32:18
○ 2026-05-05 00:33:52
● 2026-05-05 01:41:24
● 2026-05-05 23:08:22
○ 2026-05-06 00:08:34
● 2026-05-06 01:20:18
● 2026-05-06 23:53:06
○ 2026-05-07 00:50:54
● 2026-05-07 01:56:36
● 2026-05-08 23:47:38
○ 2026-05-09 00:38:10
● 2026-05-09 01:54:52
● 2026-05-09 11:37:46
○ 2026-05-09 12:42:28
● 2026-05-09 14:48:26
● 2026-05-13 22:08:08
○ 2026-05-13 22:53:30
● 2026-05-14 00:20:36
● 2026-05-17 09:36:20
○ 2026-05-17 10:27:52
● 2026-05-17 11:44:40
● 2026-05-17 17:15:14
○ 2026-05-17 17:50:48
● 2026-05-17 19:23:28
● 2026-05-19 07:17:30
○ 2026-05-19 08:24:22
○ 2026-05-26 09:36:04
● 2026-05-26 11:48:56
○ 2026-05-26 12:52:58
○ 2026-05-31 18:11:36
CNAMEcluster36.instructure.com2018-05-10 → 2018-05-10 · 3 obs
● 2018-05-10 04:53:50
○ 2026-05-02 14:59:50
○ 2026-05-31 18:11:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
instructure.comns-2.awsdns-00.com, ns-996.awsdns-60.net, ns-1799.awsdns-32.co.uk, ns-1354.awsdns-41.org2 records

✅ Authoritative Response

Server:205.251.197.74

NS records: ns-2.awsdns-00.com, ns-996.awsdns-60.net, ns-1799.awsdns-32.co.uk, ns-1354.awsdns-41.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructure.com (unsigned zone)

⏱️ Timing

Total: 492ms | Queries: -

📄 Records

TypeCountSample Data
A413.227.110.27, 13.227.110.43...

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-2.awsdns-00.com, ns-2.awsdns-00.com)

Analysis

IP Addresses

mcdowell.instructure.com resolves to 4 IP numbers: 13.227.110.2, 13.227.110.27, 13.227.110.43 and 13.227.110.77.

Additional host names — netfish.quickconnect.to, en-contents.coolmic.me, br-alternate.app.link and two others — share IP numbers with mcdowell.instructure.com.