`ostromscience.com`

DNSSEC	⚠️ Not signed
A	18.164.116.10^{🇺🇸 Amazon18.164.112.0/21}
		PTR	`server-18-164-116-10.jfk50.r.cloudfront.net`
A	18.164.116.21^{🇺🇸 Amazon18.164.112.0/21}
A	18.164.116.49^{🇺🇸 Amazon18.164.112.0/21}
A	18.164.116.98^{🇺🇸 Amazon18.164.112.0/21}
NS	`ns-362.awsdns-45.com` ⭐
		A	2600:9000:5301:6a00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-362.awsdns-45.com`
		A	205.251.193.106^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-362.awsdns-45.com`
NS	`ns-1270.awsdns-30.org` ⚠️ Not in parent delegation
		A	2600:9000:5304:f600::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1270.awsdns-30.org`
		A	205.251.196.246^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1270.awsdns-30.org`
NS	`ns-1831.awsdns-36.co.uk` ⚠️ Not in parent delegation
		A	2600:9000:5307:2700::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1831.awsdns-36.co.uk`
		A	205.251.199.39^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1831.awsdns-36.co.uk`
NS	`ns-784.awsdns-34.net`
		A	2600:9000:5303:1000::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-784.awsdns-34.net`
		A	205.251.195.16^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-784.awsdns-34.net`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`protonmail-verification=911c4a6358bed0eea6dcbeaf6c5b61c5f58f46dc`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
SOA	`ns-362.awsdns-45.com`awsdns-hostmaster@amazon.com serial=1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774787142

Previously MX for

ostromscience.com

Same first word

ostromscience.com

DNS History

37 records (10 active, 27 former)

●NSns-1270.awsdns-30.org2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

●NSns-1831.awsdns-36.co.uk2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

●NSns-362.awsdns-45.com2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

●NSns-784.awsdns-34.net2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

○NSns.avdns6.com2007-11-11 → 2007-11-11 · 3 obs

● 2007-11-11 17:18:42
○ 2015-07-15 08:56:08
○ 2026-03-29 12:29:04

○NSns1.hostmonster.com2015-07-15 → 2017-05-13 · 5 obs

○ 2007-11-11 17:18:42
● 2015-07-15 08:56:08
● 2017-05-13 07:25:32
○ 2026-02-17 00:36:00
○ 2026-03-29 12:29:04

○NSns2.avdns6.com2007-11-11 → 2007-11-11 · 3 obs

● 2007-11-11 17:18:42
○ 2015-07-15 08:56:08
○ 2026-03-29 12:29:04

○NSns2.hostmonster.com2015-07-15 → 2017-05-13 · 5 obs

○ 2007-11-11 17:18:42
● 2015-07-15 08:56:08
● 2017-05-13 07:25:32
○ 2026-02-17 00:36:00
○ 2026-03-29 12:29:04

●MXmail.protonmail.ch2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

●MXmailsec.protonmail.ch2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
● 2026-03-29 12:29:04

○MXostromscience.com2007-11-11 → 2017-05-13 · 4 obs

● 2007-11-11 17:18:42
● 2017-05-13 07:25:32
○ 2026-02-17 00:36:00
○ 2026-03-29 12:29:04

○A13.249.182.382026-02-17 → 2026-03-21 · 51 obs

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

○A13.249.182.732026-02-17 → 2026-03-21 · 51 obs

○A13.249.182.82026-02-17 → 2026-03-21 · 51 obs

○A13.249.182.962026-02-17 → 2026-03-21 · 51 obs

○A13.33.153.102026-02-17 → 2026-03-28 · 78 obs

○ 2017-05-13 07:25:32
● 2026-02-17 00:36:00
○ 2026-02-17 14:42:38
○ 2026-02-19 10:12:44
● 2026-02-19 13:00:00
● 2026-02-20 00:44:36
○ 2026-02-20 10:32:28
● 2026-02-20 15:26:06
● 2026-02-20 17:56:38
○ 2026-02-21 11:20:20
○ 2026-02-21 14:39:16
● 2026-02-22 02:06:24
● 2026-02-22 13:58:54
○ 2026-02-22 22:55:04
● 2026-02-23 00:36:08
○ 2026-02-23 18:22:06
● 2026-02-24 00:35:56
● 2026-02-24 20:49:58
○ 2026-02-25 07:52:16
● 2026-02-25 12:36:42
● 2026-02-26 02:14:52
○ 2026-02-26 10:56:30
○ 2026-02-26 14:02:40
● 2026-02-27 06:35:44
● 2026-03-02 10:44:32
○ 2026-03-02 19:35:32
● 2026-03-03 06:35:26
● 2026-03-05 06:09:00
○ 2026-03-05 10:41:08
● 2026-03-05 14:37:12
○ 2026-03-05 22:14:56
○ 2026-03-05 23:03:52
● 2026-03-06 03:11:36
○ 2026-03-06 12:03:02
○ 2026-03-07 01:58:50
● 2026-03-07 04:46:18
○ 2026-03-07 08:23:42
● 2026-03-07 11:11:48
○ 2026-03-07 23:06:58
○ 2026-03-08 02:31:36
● 2026-03-08 06:14:52
● 2026-03-08 07:28:26
○ 2026-03-08 17:23:42
● 2026-03-08 17:58:00
○ 2026-03-08 19:32:24
○ 2026-03-08 20:33:58
● 2026-03-09 01:30:14
● 2026-03-10 02:41:40
○ 2026-03-10 16:07:00
○ 2026-03-10 18:06:12
● 2026-03-11 02:04:34
● 2026-03-12 03:57:58
○ 2026-03-12 14:23:42
○ 2026-03-12 23:09:34
● 2026-03-13 00:38:04
● 2026-03-13 13:31:26
○ 2026-03-13 18:13:58
● 2026-03-14 06:36:20
● 2026-03-14 11:50:02
○ 2026-03-14 12:36:06
● 2026-03-14 16:15:58
● 2026-03-15 19:41:02
○ 2026-03-15 20:58:02
○ 2026-03-16 00:53:14
● 2026-03-16 02:24:02
● 2026-03-20 02:50:46
○ 2026-03-20 09:58:20
○ 2026-03-20 11:18:26
● 2026-03-20 12:36:18
● 2026-03-21 02:06:14
○ 2026-03-21 10:45:04
● 2026-03-21 16:05:46
● 2026-03-23 01:22:58
○ 2026-03-23 03:13:58
● 2026-03-23 05:45:10
● 2026-03-28 02:07:10
○ 2026-03-28 16:15:42
○ 2026-03-29 12:29:04

○A13.33.153.1062026-02-17 → 2026-03-28 · 78 obs

○A13.33.153.1232026-02-17 → 2026-03-28 · 78 obs

○A13.33.153.482026-02-17 → 2026-03-28 · 78 obs

●A18.164.116.102026-03-07 → 2026-03-29 · 7 obs

○ 2026-03-07 11:11:48
● 2026-03-07 23:06:58
● 2026-03-08 02:31:36
○ 2026-03-08 06:14:52
○ 2026-03-29 08:17:20
● 2026-03-29 12:29:02
● 2026-03-29 12:29:04

●A18.164.116.212026-03-07 → 2026-03-29 · 7 obs

○ 2026-03-07 11:11:48
● 2026-03-07 23:06:58
● 2026-03-08 02:31:36
○ 2026-03-08 06:14:52
○ 2026-03-29 08:17:20
● 2026-03-29 12:29:02
● 2026-03-29 12:29:04

●A18.164.116.492026-03-07 → 2026-03-29 · 7 obs

○ 2026-03-07 11:11:48
● 2026-03-07 23:06:58
● 2026-03-08 02:31:36
○ 2026-03-08 06:14:52
○ 2026-03-29 08:17:20
● 2026-03-29 12:29:02
● 2026-03-29 12:29:04

●A18.164.116.982026-03-07 → 2026-03-29 · 7 obs

○ 2026-03-07 11:11:48
● 2026-03-07 23:06:58
● 2026-03-08 02:31:36
○ 2026-03-08 06:14:52
○ 2026-03-29 08:17:20
● 2026-03-29 12:29:02
● 2026-03-29 12:29:04

○A18.64.236.1012026-03-28 → 2026-03-28 · 4 obs

○ 2026-03-28 16:15:42
● 2026-03-28 17:46:28
○ 2026-03-28 18:49:02
○ 2026-03-29 12:29:04

○A18.64.236.202026-03-28 → 2026-03-28 · 4 obs

○ 2026-03-28 16:15:42
● 2026-03-28 17:46:28
○ 2026-03-28 18:49:02
○ 2026-03-29 12:29:04

○A18.64.236.772026-03-28 → 2026-03-28 · 4 obs

○ 2026-03-28 16:15:42
● 2026-03-28 17:46:28
○ 2026-03-28 18:49:02
○ 2026-03-29 12:29:04

○A18.64.236.812026-03-28 → 2026-03-28 · 4 obs

○ 2026-03-28 16:15:42
● 2026-03-28 17:46:28
○ 2026-03-28 18:49:02
○ 2026-03-29 12:29:04

○A208.101.48.1712007-11-11 → 2007-11-11 · 3 obs

● 2007-11-11 17:18:42
○ 2015-07-15 08:56:08
○ 2026-03-29 12:29:04

○A3.166.152.1022026-03-28 → 2026-03-29 · 7 obs

○ 2026-03-28 02:07:10
● 2026-03-28 16:15:42
○ 2026-03-28 17:46:28
● 2026-03-28 18:49:02
● 2026-03-29 08:17:20
○ 2026-03-29 12:29:02
○ 2026-03-29 12:29:04

○A3.166.152.282026-03-28 → 2026-03-29 · 7 obs

○ 2026-03-28 02:07:10
● 2026-03-28 16:15:42
○ 2026-03-28 17:46:28
● 2026-03-28 18:49:02
● 2026-03-29 08:17:20
○ 2026-03-29 12:29:02
○ 2026-03-29 12:29:04

○A3.166.152.452026-03-28 → 2026-03-29 · 7 obs

○ 2026-03-28 02:07:10
● 2026-03-28 16:15:42
○ 2026-03-28 17:46:28
● 2026-03-28 18:49:02
● 2026-03-29 08:17:20
○ 2026-03-29 12:29:02
○ 2026-03-29 12:29:04

○A3.166.152.92026-03-28 → 2026-03-29 · 7 obs

○ 2026-03-28 02:07:10
● 2026-03-28 16:15:42
○ 2026-03-28 17:46:28
● 2026-03-28 18:49:02
● 2026-03-29 08:17:20
○ 2026-03-29 12:29:02
○ 2026-03-29 12:29:04

○A3.170.3.1212026-02-17 → 2026-03-23 · 39 obs

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

○A3.170.3.362026-02-17 → 2026-03-23 · 39 obs

○A3.170.3.412026-02-17 → 2026-03-23 · 39 obs

○A3.170.3.742026-02-17 → 2026-03-23 · 39 obs

○A74.220.215.2262015-07-15 → 2017-05-13 · 5 obs

○ 2007-11-11 17:18:42
● 2015-07-15 08:56:08
● 2017-05-13 07:25:32
○ 2026-02-17 00:36:00
○ 2026-03-29 12:29:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net...	-
ostromscience.com	ns-362.awsdns-45.com, ns-784.awsdns-34.net	1 record

✅ Authoritative Response

Server:205.251.195.16

NS records: ns-362.awsdns-45.com, ns-784.awsdns-34.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ostromscience.com (unsigned zone)

⏱️ Timing

Total: 261ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.164.116.21, 18.164.116.10...`
NS	4	`ns-1270.awsdns-30.org, ns-1831.awsdns-36.co.uk...`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=911c4a6358bed0ee, v=spf1 include:_spf.protonmail.ch ~all`
SOA	1	`ns-362.awsdns-45.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-362.awsdns-45.com)

Analysis

IP Addresses

ostromscience.com maps to four IP numbers: 18.164.116.10, 18.164.116.21, 18.164.116.49 and 18.164.116.98.

other host names include lanacard.com, d292a5i89u3uws.cloudfront.net, sporza.be, www.guardiandefensesolutions.com and ggr.kr; they share IP numbers with ostromscience.com.

Name Servers

ostromscience.com delegates to four name servers: ns-362.awsdns-45.com, ns-784.awsdns-34.net, ns-1270.awsdns-30.org and ns-1831.awsdns-36.co.uk.

ostromscience.com at least partially shares name servers with other domains, for instance mdti.co.uk, evertest.co, assist-med.cl, twinsity.cloud and kcray.com.

These name servers are commonly used alongside ns-1774.awsdns-29.co.uk.

Host names with two IP numbers: ns-362.awsdns-45.com points to 2600:9000:5301:6a00::1 and 205.251.193.106; ns-784.awsdns-34.net points to 2600:9000:5303:1000::1 and 205.251.195.16; ns-1270.awsdns-30.org points to 2600:9000:5304:f600::1 and 205.251.196.246; ns-1831.awsdns-36.co.uk points to 2600:9000:5307:2700::1 and 205.251.199.39.

Mail Servers

ostromscience.com is handled by two mail servers: mail.protonmail.ch and mailsec.protonmail.ch.

ostromscience.com uses the same mail server setup as other domains, for instance fildebrandt.com, another.com, null.ws, alexruffell.com and annickrenevey.com.

ostromscience.com shares at least partially some mail servers with other domains, for instance muddysmind.com, sayo.dev, matrixwebdev.com, montaner.info and moomer.ch.

Host names with three IP numbers:

mail.protonmail.ch points to: 176.119.200.128, 185.70.42.128 and 185.205.70.128.

mailsec.protonmail.ch points to: 176.119.200.129, 185.70.42.129 and 185.205.70.129.

ostromscience.com - robtex.com