`olfu.instructure.com`

DNSSEC	⚠️ Not signed
A	13.225.107.45^{🇺🇸 Amazon13.225.107.0/24 - Cloudfront}
		PTR	`server-13-225-107-45.gru3.r.cloudfront.net`
A	13.225.107.54^{🇺🇸 Amazon13.225.107.0/24 - Cloudfront}
A	13.225.107.91^{🇺🇸 Amazon13.225.107.0/24 - Cloudfront}
A	13.225.107.117^{🇺🇸 Amazon13.225.107.0/24 - Cloudfront}

`instructure.com`

	DNSSEC	⚠️ Not signed
	A	151.101.2.132^{🇺🇸 Fastly151.101.0.0/22}
	A	151.101.66.132^{🇺🇸 Fastly151.101.64.0/22}
	NS	`ns-2.awsdns-00.com` ⭐
	NS	`ns-1354.awsdns-41.org`
	NS	`ns-1799.awsdns-32.co.uk`
	NS	`ns-996.awsdns-60.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt2.aspmx.l.google.com`⁽¹⁰⁾
	MX	`aspmx2.googlemail.com`⁽²⁰⁾
	MX	`aspmx3.googlemail.com`⁽²⁰⁾
	TXT	`2acd5847c66f4325be05af390213b8c7.instructure.com`
	TXT	`MS=ms20700021`
	TXT	`ZOOM_verify_Up1Opd4-S9ChtRORps16qw`
	TXT	`adobe-idp-site-verification=4287460e7429c97ad75b995bdef6b0d7ff1c9b541946abfaf...`
	TXT	`anthropic-domain-verification-2pz98m=hO4bmZQTC5gutJZcanKeagAWR`
	TXT	`anthropic-domain-verification-4mh4xs=A4vkPXqJIA4VVi9GAbxDEPohr`
	TXT	`anthropic-domain-verification-pz1pr3=sZkvFuBJeSdmEXoj4KJYYQW8Z`
	TXT	`anthropic-domain-verification-vz61c8=kfBobb4vvH2M9xtsZhFajtKHr`
	TXT	`apple-domain-verification=8oZZjgKWADRgkWui`
	TXT	`astro-domain-verification=cmbjhzn9b0c0h01pimts1v2h1`
	TXT	`atlassian-domain-verification=pS8CbCDhL3R1mMujl07LwhltWFcJtks8mrBa7l/1uocODR9...`
	TXT	`bugcrowd-verification=817deedf9414a9ea878ff255c42a9afa`
	TXT	`canva-site-verification=jRPvv0c9AZGTaJIIPIpfAQ`
	TXT	`canva-site-verification=jiASD5n0aNnvUnfIP1w4XA`
	TXT	`docker-verification=7555bc65-ce7a-4ed2-8028-4bf0274d2c5b`
	TXT	`docusign=1ca86ab9-2ddb-4d63-b719-4798811390ca`
	TXT	`drift-domain-verification=608941e9992460f0ccd58daa1decf1808863da188a929106582...`
	TXT	`fastly-domain-delegation-jpv3oeoqr3aouxwkbhpb-00480650-2025-07-31`
	TXT	`figma-domain-verification=848b9254b032bfe488e955a140a8a63cb345186c3c69b7200f7...`
	TXT	`google-site-verification=3SDlSr_fW_6bYm0BDDK4ZXs6I5yKtB4WyXL3GNozx8I`
	TXT	`google-site-verification=WSlNW84_Zm6mbOaM35pQyLJUt7-OtVXNjzXe9LT-eJI`
	TXT	`google-site-verification=bC89ByaBs616PDmJLrSUG5RS3fyA8agwCtXch9G0GL0`
	TXT	`hcp-domain-verification=24de36f1e2e1ad573ac320a62707e7ec8ac0cce2dccf7985914a8...`
	TXT	`jamf-site-verification=-bAufptjYdQAfzF-s7PBtQ`
	TXT	`m6bll7f2q2d2uidl6cq273dma0`
	TXT	`miro-verification=0ee36f655f5ce0499683c255714fcdbe990af0e0`
	TXT	`mongodb-site-verification=UyyatYgRcdnc3W9g8StgD1OK8wfcIouE`
	TXT	`onetrust-domain-verification=5ef48d8081ac4ab6adce9ed80c92f4e5`
	TXT	`openai-domain-verification=dv-wb5qFISTkDoktTMXLsDMVuZ0`
	TXT	`pendo-domain-verification=2l9wI_SzXdfdzA0ZCZUES4O0FS0`
	TXT	`v=spf1 include:_spf.google.com include:amazonses.com include:_spf.q4press.com...`
	TXT	`zapier-domain-verification-challenge=fe79b183-171c-432c-bf5d-48b3e73fd0af`
	TXT	`zoho-verification=zb08654551.zmverify.zoho.com`
	SOA	`ns-2.awsdns-00.com`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (87/100)
rank #1299 globally
rank #705 in the tld
WOT: SAFE (91/100)
📈 Tranco rank: #1,020

Same first word

olfu.edu.ph

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DNS History

48 records (4 active, 44 former)

○A108.139.113.1132026-04-09 → 2026-04-11 · 16 obs

○ 2026-04-09 18:05:08
● 2026-04-09 23:15:58
○ 2026-04-10 00:02:50
● 2026-04-10 04:20:48
○ 2026-04-10 06:32:38
○ 2026-04-10 09:59:32
● 2026-04-10 15:36:16
○ 2026-04-10 19:25:32
○ 2026-04-11 01:40:14
● 2026-04-11 04:44:16
● 2026-04-11 11:09:56
○ 2026-04-11 14:17:50
○ 2026-04-11 16:15:26
● 2026-04-11 17:05:38
○ 2026-04-11 20:38:56
○ 2026-04-12 06:50:44

○A108.139.113.232026-04-09 → 2026-04-11 · 16 obs

○A108.139.113.512026-04-09 → 2026-04-11 · 16 obs

○A108.139.113.592026-04-09 → 2026-04-11 · 16 obs

○A108.158.186.1212026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 17:05:38
● 2026-04-11 20:38:56
○ 2026-04-12 00:12:10
○ 2026-04-12 06:50:44

○A108.158.186.262026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 17:05:38
● 2026-04-11 20:38:56
○ 2026-04-12 00:12:10
○ 2026-04-12 06:50:44

○A108.158.186.92026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 17:05:38
● 2026-04-11 20:38:56
○ 2026-04-12 00:12:10
○ 2026-04-12 06:50:44

○A108.158.186.962026-04-11 → 2026-04-11 · 4 obs

○ 2026-04-11 17:05:38
● 2026-04-11 20:38:56
○ 2026-04-12 00:12:10
○ 2026-04-12 06:50:44

●A13.225.107.1172026-03-28 → 2026-04-12 · 44 obs

○ 2026-03-28 13:44:22
● 2026-03-28 14:25:32
○ 2026-03-28 17:23:20
● 2026-03-28 22:07:28
○ 2026-03-29 14:52:18
○ 2026-03-29 20:46:54
● 2026-03-29 22:57:30
○ 2026-03-30 01:52:30
○ 2026-03-30 08:31:28
● 2026-03-30 09:57:08
○ 2026-03-30 10:34:48
● 2026-03-30 11:51:54
○ 2026-03-31 03:55:40
○ 2026-03-31 08:14:16
● 2026-03-31 10:59:22
● 2026-03-31 11:32:22
○ 2026-03-31 12:33:58
○ 2026-04-02 21:27:14
● 2026-04-02 23:15:56
○ 2026-04-03 01:52:12
○ 2026-04-05 16:28:34
● 2026-04-05 17:12:22
○ 2026-04-05 18:14:50
● 2026-04-06 00:17:16
○ 2026-04-06 03:57:50
○ 2026-04-06 07:16:32
● 2026-04-06 09:42:40
● 2026-04-06 13:31:04
○ 2026-04-06 14:43:30
○ 2026-04-07 08:16:58
● 2026-04-07 09:52:36
○ 2026-04-07 17:37:42
○ 2026-04-10 04:20:48
● 2026-04-10 06:32:38
● 2026-04-10 08:28:42
○ 2026-04-10 09:59:32
○ 2026-04-11 11:09:56
● 2026-04-11 14:17:50
○ 2026-04-11 16:15:26
○ 2026-04-11 20:38:56
● 2026-04-12 00:12:10
○ 2026-04-12 03:17:50
● 2026-04-12 04:51:10
● 2026-04-12 06:50:44

●A13.225.107.452026-03-28 → 2026-04-12 · 44 obs

●A13.225.107.542026-03-28 → 2026-04-12 · 44 obs

●A13.225.107.912026-03-28 → 2026-04-12 · 44 obs

○A13.226.209.22026-02-18 → 2026-03-29 · 183 obs

○ 2026-02-17 21:43:38
● 2026-02-18 00:10:16
○ 2026-02-18 01:16:04
○ 2026-02-18 08:53:50
● 2026-02-18 09:40:52
● 2026-02-18 14:51:20
○ 2026-02-18 15:55:54
○ 2026-02-19 03:06:40
● 2026-02-19 05:24:16
○ 2026-02-19 07:44:36
○ 2026-02-19 13:07:34
● 2026-02-19 20:05:10
● 2026-02-20 00:15:18
○ 2026-02-20 01:02:46
○ 2026-02-20 11:24:42
● 2026-02-20 16:46:46
○ 2026-02-20 17:56:42
○ 2026-02-20 19:54:26
● 2026-02-21 00:12:30
○ 2026-02-21 00:58:34
○ 2026-02-21 05:23:56
● 2026-02-21 07:13:46
○ 2026-02-21 08:02:06
○ 2026-02-21 12:49:50
● 2026-02-21 13:40:22
● 2026-02-22 02:08:00
○ 2026-02-22 07:25:00
○ 2026-02-22 15:06:58
● 2026-02-22 16:07:00
● 2026-02-22 18:52:54
○ 2026-02-22 21:45:18
○ 2026-02-23 22:43:52
● 2026-02-24 00:12:10
○ 2026-02-24 10:46:24
○ 2026-02-26 05:04:26
● 2026-02-26 13:07:06
○ 2026-02-26 17:58:20
○ 2026-02-26 23:36:20
● 2026-02-27 02:47:36
● 2026-02-27 05:33:04
○ 2026-02-27 06:20:52
○ 2026-02-27 09:01:04
● 2026-02-27 09:54:40
● 2026-02-27 23:46:08
○ 2026-02-28 03:22:44
● 2026-02-28 07:45:06
○ 2026-02-28 13:59:50
● 2026-02-28 15:43:44
● 2026-02-28 19:05:48
○ 2026-02-28 19:41:30
○ 2026-02-28 21:25:46
● 2026-03-01 02:31:56
● 2026-03-01 07:07:52
○ 2026-03-01 09:10:36
○ 2026-03-01 19:55:34
● 2026-03-01 22:47:56
○ 2026-03-01 23:51:10
● 2026-03-02 03:40:06
● 2026-03-02 11:13:48
○ 2026-03-02 12:43:34
○ 2026-03-02 13:51:38
● 2026-03-02 14:49:44
○ 2026-03-02 22:18:38
● 2026-03-03 00:14:32
○ 2026-03-03 01:51:30
● 2026-03-03 06:44:06
○ 2026-03-03 07:58:48
● 2026-03-03 14:41:20
○ 2026-03-03 18:27:38
● 2026-03-03 22:03:56
○ 2026-03-04 01:04:32
○ 2026-03-04 03:45:38
● 2026-03-04 05:36:06
● 2026-03-04 06:18:16
○ 2026-03-04 06:54:16
● 2026-03-04 22:11:10
○ 2026-03-04 23:30:30
○ 2026-03-05 01:58:22
● 2026-03-05 05:55:46
○ 2026-03-05 06:37:20
○ 2026-03-05 07:38:22
● 2026-03-05 08:58:24
○ 2026-03-05 10:38:26
● 2026-03-05 13:03:46
○ 2026-03-05 14:01:00
○ 2026-03-05 15:11:26
● 2026-03-05 21:43:16
● 2026-03-06 00:14:38
○ 2026-03-06 02:51:28
○ 2026-03-06 03:38:34
● 2026-03-06 16:54:20
○ 2026-03-06 20:32:00
● 2026-03-06 23:57:00
○ 2026-03-07 01:51:42
● 2026-03-07 03:28:56
○ 2026-03-07 14:17:58
○ 2026-03-10 03:22:00
● 2026-03-10 08:23:08
● 2026-03-10 21:47:38
○ 2026-03-10 22:21:54
○ 2026-03-11 14:26:26
● 2026-03-11 15:50:10
○ 2026-03-11 22:42:58
○ 2026-03-12 14:15:02
● 2026-03-12 16:24:36
● 2026-03-12 18:37:34
○ 2026-03-12 22:40:52
○ 2026-03-13 14:06:08
● 2026-03-13 22:09:28
● 2026-03-14 01:00:54
○ 2026-03-14 01:48:14
○ 2026-03-14 18:29:10
● 2026-03-14 20:08:50
○ 2026-03-14 22:46:08
● 2026-03-15 10:21:02
● 2026-03-15 14:40:36
○ 2026-03-15 15:33:06
○ 2026-03-16 04:26:26
● 2026-03-16 06:18:34
● 2026-03-16 10:57:40
○ 2026-03-16 14:22:50
○ 2026-03-17 05:29:24
● 2026-03-17 06:20:58
○ 2026-03-17 12:22:28
○ 2026-03-17 15:59:08
● 2026-03-17 18:26:56
● 2026-03-17 19:41:18
○ 2026-03-17 20:14:34
○ 2026-03-17 22:39:34
● 2026-03-18 00:13:50
○ 2026-03-18 02:46:56
○ 2026-03-18 07:28:26
● 2026-03-18 12:17:18
○ 2026-03-18 13:20:30
○ 2026-03-18 21:06:46
● 2026-03-19 00:14:44
○ 2026-03-19 01:37:00
○ 2026-03-20 02:55:42
● 2026-03-20 06:25:44
● 2026-03-20 12:27:14
○ 2026-03-20 14:13:52
○ 2026-03-22 02:10:46
● 2026-03-22 10:43:42
○ 2026-03-22 17:50:26
● 2026-03-23 00:13:36
○ 2026-03-23 02:51:58
○ 2026-03-23 17:23:24
● 2026-03-23 18:33:48
● 2026-03-24 00:35:18
○ 2026-03-24 02:25:52
○ 2026-03-24 07:49:50
● 2026-03-24 13:02:20
○ 2026-03-24 15:32:24
○ 2026-03-24 23:51:02
● 2026-03-25 00:37:54
○ 2026-03-25 01:24:20
○ 2026-03-25 09:06:50
● 2026-03-25 12:26:30
○ 2026-03-25 13:31:10
○ 2026-03-26 03:59:56
● 2026-03-26 06:07:02
● 2026-03-26 09:13:36
○ 2026-03-26 13:43:04
○ 2026-03-26 23:30:20
● 2026-03-27 00:14:46
○ 2026-03-27 01:29:10
○ 2026-03-27 09:19:18
● 2026-03-27 12:41:56
● 2026-03-27 14:27:38
○ 2026-03-27 17:28:04
○ 2026-03-27 20:04:06
● 2026-03-28 00:12:54
● 2026-03-28 00:43:04
○ 2026-03-28 01:50:48
○ 2026-03-28 02:58:40
● 2026-03-28 06:43:42
○ 2026-03-28 07:57:50
● 2026-03-28 08:42:36
○ 2026-03-28 13:44:22
○ 2026-03-29 14:52:18
● 2026-03-29 20:46:54
○ 2026-03-29 22:57:30
○ 2026-04-12 06:50:44

○A13.226.209.262026-02-18 → 2026-03-29 · 183 obs

○A13.226.209.922026-02-18 → 2026-03-29 · 183 obs

○A13.226.209.992026-02-18 → 2026-03-29 · 183 obs

○A13.33.153.1152026-03-21 → 2026-03-31 · 7 obs

○ 2026-03-20 18:32:02
● 2026-03-21 02:43:48
○ 2026-03-21 09:45:52
○ 2026-03-31 03:55:40
● 2026-03-31 04:27:36
○ 2026-03-31 08:14:16
○ 2026-04-12 06:50:44

○A13.33.153.512026-03-21 → 2026-03-31 · 7 obs

○ 2026-03-20 18:32:02
● 2026-03-21 02:43:48
○ 2026-03-21 09:45:52
○ 2026-03-31 03:55:40
● 2026-03-31 04:27:36
○ 2026-03-31 08:14:16
○ 2026-04-12 06:50:44

○A13.33.153.752026-03-21 → 2026-03-31 · 7 obs

○ 2026-03-20 18:32:02
● 2026-03-21 02:43:48
○ 2026-03-21 09:45:52
○ 2026-03-31 03:55:40
● 2026-03-31 04:27:36
○ 2026-03-31 08:14:16
○ 2026-04-12 06:50:44

○A13.33.153.972026-03-21 → 2026-03-31 · 7 obs

○ 2026-03-20 18:32:02
● 2026-03-21 02:43:48
○ 2026-03-21 09:45:52
○ 2026-03-31 03:55:40
● 2026-03-31 04:27:36
○ 2026-03-31 08:14:16
○ 2026-04-12 06:50:44

○A13.33.235.392026-03-24 → 2026-03-27 · 27 obs

○ 2026-03-24 03:13:16
● 2026-03-24 06:57:38
○ 2026-03-24 07:49:50
○ 2026-03-24 13:02:20
● 2026-03-24 15:32:24
● 2026-03-24 18:55:50
○ 2026-03-24 21:46:10
● 2026-03-24 22:18:44
○ 2026-03-24 22:51:24
● 2026-03-24 23:51:02
○ 2026-03-25 00:37:54
○ 2026-03-25 02:02:06
● 2026-03-25 03:27:36
● 2026-03-25 07:13:00
○ 2026-03-25 09:06:50
○ 2026-03-25 14:09:42
● 2026-03-25 20:28:32
○ 2026-03-25 22:10:56
○ 2026-03-26 13:43:04
● 2026-03-26 16:49:32
● 2026-03-26 18:52:16
○ 2026-03-26 19:29:46
○ 2026-03-27 01:29:10
● 2026-03-27 02:09:40
● 2026-03-27 09:19:18
○ 2026-03-27 12:41:56
○ 2026-04-12 06:50:44

○A13.33.235.712026-03-24 → 2026-03-27 · 27 obs

○A13.33.235.722026-03-24 → 2026-03-27 · 27 obs

○A13.33.235.862026-03-24 → 2026-03-27 · 27 obs

○A18.154.206.1282026-02-16 → 2026-03-25 · 101 obs

● 2026-02-16 02:46:50
○ 2026-02-16 16:00:10
○ 2026-02-17 05:13:56
● 2026-02-17 15:16:02
○ 2026-02-17 21:09:16
● 2026-02-17 21:43:38
○ 2026-02-18 00:10:16
○ 2026-02-18 01:16:04
● 2026-02-18 01:53:30
○ 2026-02-18 08:53:50
○ 2026-02-19 07:44:36
● 2026-02-19 13:07:34
○ 2026-02-19 20:05:10
○ 2026-02-21 00:12:30
● 2026-02-21 00:58:34
○ 2026-02-21 04:14:18
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● 2026-02-21 10:14:10
○ 2026-02-21 12:49:50
○ 2026-02-22 09:58:56
● 2026-02-22 15:06:58
○ 2026-02-22 16:07:00
○ 2026-02-25 05:01:08
● 2026-02-25 18:23:14
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○ 2026-02-27 05:33:04
● 2026-02-27 06:20:52
○ 2026-02-27 08:07:42
● 2026-02-27 09:01:04
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○A18.154.206.312026-02-16 → 2026-03-25 · 101 obs

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○A18.165.116.1062026-03-31 → 2026-03-31 · 4 obs

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○A18.165.116.1082026-03-31 → 2026-03-31 · 4 obs

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○A18.165.116.882026-03-31 → 2026-03-31 · 4 obs

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○A18.165.116.952026-03-31 → 2026-03-31 · 4 obs

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○A18.165.122.172026-03-23 → 2026-03-23 · 5 obs

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○A18.165.122.542026-03-23 → 2026-03-23 · 5 obs

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○A18.239.36.1012026-03-27 → 2026-04-05 · 7 obs

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○A18.239.36.422026-03-27 → 2026-04-05 · 7 obs

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○A18.239.36.462026-03-27 → 2026-04-05 · 7 obs

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○A18.239.36.72026-03-27 → 2026-04-05 · 7 obs

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○A18.245.218.1162026-02-16 → 2026-04-12 · 283 obs

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○A18.245.218.372026-02-16 → 2026-04-12 · 283 obs

○A18.245.218.52026-02-16 → 2026-04-12 · 283 obs

○A18.245.218.962026-02-16 → 2026-04-12 · 283 obs

○A99.84.132.1162026-03-31 → 2026-04-07 · 31 obs

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○A99.84.132.1222026-03-31 → 2026-04-07 · 31 obs

○A99.84.132.142026-03-31 → 2026-04-07 · 31 obs

○A99.84.132.332026-03-31 → 2026-04-07 · 31 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net...	-
instructure.com	ns-2.awsdns-00.com, ns-996.awsdns-60.net, ns-1799.awsdns-32.co.uk, ns-1354.awsdns-41.org	1 record

✅ 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: 728ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`13.225.107.45, 13.225.107.91...`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-2.awsdns-00.com)

Analysis

IP Addresses

olfu.instructure.com resolves to four IP numbers: 13.225.107.45, 13.225.107.54, 13.225.107.91 and 13.225.107.117.

other host names for instance www.meridianhost.com, mikegeary1.hop.clickbank.net, d3ixyvamb1nekw.cloudfront.net, aliac.instructure.com and fitnessvip.hop.clickbank.net share IP numbers with olfu.instructure.com.

olfu.instructure.com - robtex.com