cos.edu - robtex.com

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`cos.edu`

DNSSEC	⚠️ Not signed
A	44.235.80.15^{🇺🇸 Amazon}
		PTR	`ec2-44-235-80-15.us-west-2.compute.amazonaws.com`
A	52.12.16.12^{🇺🇸 Amazon}
NS	`ns-388.awsdns-48.com` ⭐
		A	2600:9000:5301:8400::1^{🇺🇸 Amazon}
			PTR	`ns-388.awsdns-48.com`
		A	205.251.193.132^{🇺🇸 Amazon}
			PTR	`ns-388.awsdns-48.com`
NS	`ns-1303.awsdns-34.org`
		A	2600:9000:5305:1700::1^{🇺🇸 Amazon}
			PTR	`ns-1303.awsdns-34.org`
		A	205.251.197.23^{🇺🇸 Amazon}
			PTR	`ns-1303.awsdns-34.org`
NS	`ns-1541.awsdns-00.co.uk`
		A	2600:9000:5306:500::1^{🇺🇸 Amazon}
			PTR	`ns-1541.awsdns-00.co.uk`
		A	205.251.198.5^{🇺🇸 Amazon}
			PTR	`ns-1541.awsdns-00.co.uk`
NS	`ns-913.awsdns-50.net`
		A	2600:9000:5303:9100::1^{🇺🇸 Amazon}
			PTR	`ns-913.awsdns-50.net`
		A	205.251.195.145^{🇺🇸 Amazon}
			PTR	`ns-913.awsdns-50.net`
MX	`cos-edu.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::^{🇺🇸 Microsoft}
			PTR	`mail-sj2pr05cu00300.inbound.protection.outlook.com`
		A	2a01:111:f403:c902::6^{🇺🇸 Microsoft}
			PTR	`mail-sj0pr21cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:f807::1^{🇺🇸 Microsoft}
			PTR	`mail-co1pr21cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f90a::1^{🇺🇸 Microsoft}
			PTR	`mail-bn8pr03cu00201.inbound.protection.outlook.com`
		A	52.101.9.0^{🇺🇸 Microsoft}
			PTR	`mail-bl2pr02cu00100.inbound.protection.outlook.com`
		A	52.101.10.14^{🇺🇸 Microsoft}
			PTR	`mail-bn6pr04cu00206.inbound.protection.outlook.com`
		A	52.101.41.24^{🇺🇸 Microsoft}
			PTR	`mail-sj0pr03cu01600.inbound.protection.outlook.com`
		A	52.101.41.28^{🇺🇸 Microsoft}
			PTR	`mail-sj0pr03cu01504.inbound.protection.outlook.com`
		A	104.47.57.138^{🇺🇸 Microsoft}
			PTR	`mail-dm6nam110138.inbound.protection.outlook.com`
		A	104.47.58.138^{🇺🇸 Microsoft}
			PTR	`mail-bn8nam110138.inbound.protection.outlook.com`
TXT	`AS2TrustedDomains=*.cos.edu`
TXT	`MS=ms40793896`
TXT	`ReleaseWLIDNamespace=true`
TXT	`ZOOM_verify_qDhGRuGM5nYDNjQ8UuoFVC`
TXT	`abuseipdb-verification=jXh5oDgB`
TXT	`adobe-idp-site-verification=8b4585b9cb588a5dca47d1c22bbd59bb93e21b2c029e5901a...`
TXT	`apple-domain-verification=c6WjCApXrC8HP5i1`
TXT	`atlassian-domain-verification=bcr58zw0ania83uJQZQF8an3dyDKWT7BnAhgCUvlvfI6iTe...`
TXT	`canva-site-verification=L_pDLxxKmkQEj5-lRXqEPA`
TXT	`docker-verification=5eb79710-963a-472e-b78a-d9695d074f2e`
TXT	`google-site-verification=SngOPqEFcfmxuf5goWl9kYPv9PIw6X-8vv8SgLzCCGE`
TXT	`google-site-verification=meUTxRFVGeA7yW60wSNatPOd4lMJr5NaZMSY5UwNUjg`
TXT	`have-i-been-pwned-verification=997024459a6ba852f26f3e2c193a9d44`
TXT	`sophos-domain-verification=227fea0d5195d7a93036aa3f742ed1ef5717b79bcf5e50104e...`
TXT	`v=spf1 include:_spf.cos.edu include:spf.protection.outlook.com include:_regro...`
TXT	`workplace-domain-verification=5dmOB6Xvgjz4jlViHRLdOzNoAMdxEN`
SOA	`ns-388.awsdns-48.com`awsdns-hostmaster@amazon.com serial=1

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1770993665

rank #246673 globally
rank #2232 in the tld
📈 Tranco rank: #295,083

Up

maintenance.cos.edu

ims.cos.edu

vpn.cos.edu

listo.cos.edu

beta.cos.edu

mail.cos.edu

onlineforms.cos.edu

sportbikes.cos.edu

libserver2.cos.edu

infinity.cos.edu

www.cos.edu

blog.cos.edu

bookstore.cos.edu

webctrl.cos.edu

banweb.cos.edu

itunes.cos.edu

writingcenter.cos.edu

nursing.cos.edu

Same first word

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Similar names

cos.com

osc.nl

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cso.nl

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cso.co

soc.tools

osc.sk

cso.com

soc.ge

ocs.tv

soc.gov.vn

osc.tech

soc.ninja

soc.training

osc.lv

soc.capital

DNS History

13 records (7 active, 6 former)

●NSns-1303.awsdns-34.org2021-01-08 → 2026-02-14 · 3 obs

○ 2019-02-18 11:08:38
● 2021-01-08 01:36:20
● 2026-02-14 17:36:00

●NSns-1541.awsdns-00.co.uk2021-01-08 → 2026-02-14 · 3 obs

○ 2019-02-18 11:08:38
● 2021-01-08 01:36:20
● 2026-02-14 17:36:00

●NSns-388.awsdns-48.com2021-01-08 → 2026-02-14 · 3 obs

○ 2019-02-18 11:08:38
● 2021-01-08 01:36:20
● 2026-02-14 17:36:00

●NSns-913.awsdns-50.net2021-01-08 → 2026-02-14 · 3 obs

○ 2019-02-18 11:08:38
● 2021-01-08 01:36:20
● 2026-02-14 17:36:00

○NSns1.cos.edu2015-05-26 → 2019-02-18 · 52 obs

● 2015-05-26 22:41:20
● 2015-09-19 03:37:52
○ 2015-10-21 22:53:46
○ 2015-11-03 11:18:02
● 2015-11-10 17:53:20
● 2015-12-12 17:22:42
○ 2015-12-16 23:58:48
○ 2015-12-19 23:28:32
● 2015-12-23 07:52:54
● 2015-12-25 20:15:46
○ 2015-12-31 15:37:32
● 2016-01-09 07:16:24
○ 2016-01-14 01:37:42
○ 2016-01-20 16:14:26
● 2016-01-22 17:09:18
● 2016-01-26 09:00:44
○ 2016-02-10 15:16:04
● 2016-02-11 20:01:48
● 2016-02-19 09:55:10
○ 2016-04-05 06:29:46
● 2016-04-26 06:37:50
● 2016-05-18 16:55:26
○ 2016-05-27 11:29:50
● 2016-06-12 01:41:06
○ 2016-06-22 20:34:58
● 2016-07-23 18:58:12
○ 2016-07-25 23:25:16
○ 2016-08-26 18:37:58
● 2016-09-03 04:35:30
○ 2016-09-12 04:57:10
○ 2016-09-21 09:21:18
● 2016-09-28 15:54:46
● 2016-10-07 10:49:10
○ 2016-10-14 14:08:28
● 2016-10-21 21:54:28
● 2016-11-14 17:49:08
○ 2016-11-21 23:50:10
○ 2016-11-29 00:32:52
● 2016-12-02 23:09:42
● 2016-12-09 08:38:58
○ 2016-12-10 08:43:58
● 2016-12-12 19:10:18
○ 2016-12-13 22:31:18
○ 2016-12-20 18:19:20
● 2016-12-22 03:22:22
○ 2016-12-24 03:00:58
● 2016-12-25 16:35:48
○ 2017-02-07 02:32:06
● 2017-07-02 16:08:22
● 2019-02-18 11:08:38
○ 2021-01-08 01:36:20
○ 2026-02-14 17:36:00

○NSns2.cos.edu2015-05-26 → 2019-02-18 · 53 obs

● 2015-05-26 22:41:20
○ 2015-09-07 22:56:16
○ 2015-09-19 03:37:52
● 2015-10-21 22:53:46
● 2015-11-03 11:18:02
○ 2015-11-10 17:53:20
○ 2015-12-12 17:22:42
● 2015-12-16 23:58:48
● 2015-12-19 23:28:32
○ 2015-12-23 07:52:54
○ 2015-12-25 20:15:46
● 2015-12-31 15:37:32
○ 2016-01-09 07:16:24
● 2016-01-14 01:37:42
● 2016-01-20 16:14:26
○ 2016-01-22 17:09:18
○ 2016-01-26 09:00:44
● 2016-02-10 15:16:04
○ 2016-02-11 20:01:48
○ 2016-02-19 09:55:10
● 2016-04-05 06:29:46
○ 2016-04-26 06:37:50
○ 2016-05-18 16:55:26
● 2016-05-27 11:29:50
○ 2016-06-12 01:41:06
● 2016-06-22 20:34:58
○ 2016-07-23 18:58:12
● 2016-07-25 23:25:16
● 2016-08-26 18:37:58
○ 2016-09-03 04:35:30
● 2016-09-12 04:57:10
● 2016-09-21 09:21:18
○ 2016-09-28 15:54:46
○ 2016-10-07 10:49:10
● 2016-10-14 14:08:28
○ 2016-10-21 21:54:28
○ 2016-11-14 17:49:08
● 2016-11-21 23:50:10
● 2016-11-29 00:32:52
○ 2016-12-02 23:09:42
○ 2016-12-09 08:38:58
● 2016-12-10 08:43:58
○ 2016-12-12 19:10:18
● 2016-12-13 22:31:18
● 2016-12-20 18:19:20
○ 2016-12-22 03:22:22
● 2016-12-24 03:00:58
○ 2016-12-25 16:35:48
● 2017-02-07 02:32:06
○ 2017-07-02 16:08:22
● 2019-02-18 11:08:38
○ 2021-01-08 01:36:20
○ 2026-02-14 17:36:00

●MXcos-edu.mail.protection.outlook.com2018-03-01 → 2026-02-14 · 3 obs

○ 2018-01-09 19:04:02
● 2018-03-01 08:28:08
● 2026-02-14 17:36:00

○MXgateway.cos.edu2015-05-26 → 2018-01-09 · 4 obs

● 2015-05-26 22:41:20
● 2018-01-09 19:04:02
○ 2018-03-01 08:28:08
○ 2026-02-14 17:36:00

○MXmx-01-us-east-2.prod.hydra.sophos.com2021-01-08 → 2021-06-12 · 4 obs

○ 2018-03-01 08:28:08
● 2021-01-08 01:36:20
● 2021-06-12 12:55:16
○ 2026-02-14 17:36:00

○MXmx-02-us-east-2.prod.hydra.sophos.com2021-01-08 → 2021-06-12 · 4 obs

○ 2018-03-01 08:28:08
● 2021-01-08 01:36:20
● 2021-06-12 12:55:16
○ 2026-02-14 17:36:00

○A198.189.24.762015-05-26 → 2021-06-12 · 3 obs

● 2015-05-26 22:41:20
● 2021-06-12 12:55:16
○ 2026-02-14 17:36:00

●A44.235.80.152026-02-14 → 2026-02-14 · 2 obs

○ 2021-06-12 12:55:16
● 2026-02-14 17:36:00

●A52.12.16.122026-02-14 → 2026-02-14 · 2 obs

○ 2021-06-12 12:55:16
● 2026-02-14 17:36:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cos.edu	ns-388.awsdns-48.com, ns-913.awsdns-50.net, ns-1541.awsdns-00.co.uk, ns-1303.awsdns-34.org	-

✅ Authoritative Response

Server: 205.251.197.23

NS records: ns-388.awsdns-48.com, ns-913.awsdns-50.net, ns-1541.awsdns-00.co.uk, ns-1303.awsdns-34.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cos.edu (unsigned zone)

⏱️ Timing

Total: 91ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`52.12.16.12, 44.235.80.15`
NS	4	`ns-1303.awsdns-34.org, ns-1541.awsdns-00.co.uk...`
MX	1	`cos-edu.mail.protection.outlook.com (pri`
TXT	16	`AS2TrustedDomains=*.cos.edu, MS=ms40793896...`
SOA	1	`ns-388.awsdns-48.com awsdns-hostmaster.a`

AI analysis

cos.edu is a parent of maintenance.cos.edu, ims.cos.edu, vpn.cos.edu, listo.cos.edu, beta.cos.edu and a few other host names.

cos.edu points to two IP numbers: 44.235.80.15 and 52.12.16.12.

cos.edu is delegated to four name servers: ns-388.awsdns-48.com, ns-913.awsdns-50.net, ns-1303.awsdns-34.org and ns-1541.awsdns-00.co.uk.

cos.edu at least partially shares name servers with other domains, for example aaronkcarpenter.com, getstreamkit.com, newyorkcriminaldefenseattorneyblog.com, kirins.co.uk and tutalcs.com.

these name servers are commonly used with the following name servers: ns-815.awsdns-37.net, ns-139.awsdns-17.com, ns-351.awsdns-43.com, ns-1438.awsdns-51.org, ns-1271.awsdns-30.org, ns-1768.awsdns-29.co.uk, ns-977.awsdns-58.net, ns-1088.awsdns-08.org, ns-1900.awsdns-45.co.uk and ns-1751.awsdns-26.co.uk.

Host names with two IP numbers:

ns-388.awsdns-48.com points to: 2600:9000:5301:8400::1 and 205.251.193.132

ns-913.awsdns-50.net points to: 2600:9000:5303:9100::1 and 205.251.195.145

ns-1303.awsdns-34.org points to: 2600:9000:5305:1700::1 and 205.251.197.23

ns-1541.awsdns-00.co.uk points to: 2600:9000:5306:500::1 and 205.251.198.5

The cos-edu.mail.protection.outlook.com mail server handles cos.edu.

The host name cos-edu.mail.protection.outlook.com resolves to ten IP numbers: 2a01:111:f403:c902::, 2a01:111:f403:c902::6, 2a01:111:f403:f807::1, 2a01:111:f403:f90a::1, 52.101.9.0, 52.101.10.14, 52.101.41.24, 52.101.41.28, 104.47.57.138 and 104.47.58.138.