`drbrianfoster.com`

DNSSEC	⚠️ Not signed
A	18.161.205.21^{🇺🇸 Amazon18.161.204.0/23}
		PTR	`server-18-161-205-21.gig51.r.cloudfront.net`
A	18.161.205.66^{🇺🇸 Amazon18.161.204.0/23}
A	18.161.205.95^{🇺🇸 Amazon18.161.204.0/23}
A	18.161.205.103^{🇺🇸 Amazon18.161.204.0/23}
NS	`ns-766.awsdns-31.net` ⭐ ⚠️ Not in parent delegation
		A	2600:9000:5302:fe00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-766.awsdns-31.net`
		A	205.251.194.254^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-766.awsdns-31.net`
NS	`ns-1154.awsdns-16.org` ⚠️ Not in parent delegation
		A	2600:9000:5304:8200::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1154.awsdns-16.org`
		A	205.251.196.130^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1154.awsdns-16.org`
NS	`ns-1701.awsdns-20.co.uk` ⚠️ Not in parent delegation
		A	2600:9000:5306:a500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1701.awsdns-20.co.uk`
		A	205.251.198.165^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1701.awsdns-20.co.uk`
NS	`ns-336.awsdns-42.com` ⚠️ Not in parent delegation
		A	2600:9000:5301:5000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-336.awsdns-42.com`
		A	205.251.193.80^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-336.awsdns-42.com`
NS	`ns3.vortala.com` ⚠️ Not in zone NS records
		A	2600:9000:5302:fe00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-766.awsdns-31.net`
		A	205.251.194.254^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-766.awsdns-31.net`
NS	`ns4.vortala.com` ⚠️ Not in zone NS records
		A	2600:9000:5301:5000::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-336.awsdns-42.com`
		A	205.251.193.80^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-336.awsdns-42.com`
NS	`ns5.vortala.com` ⚠️ Not in zone NS records
		A	2600:9000:5306:a500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1701.awsdns-20.co.uk`
		A	205.251.198.165^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1701.awsdns-20.co.uk`
NS	`ns6.vortala.com` ⚠️ Not in zone NS records
		A	2600:9000:5304:8200::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1154.awsdns-16.org`
		A	205.251.196.130^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1154.awsdns-16.org`
MX	`mx1.emailsrvr.com` ⭐
		A	146.20.161.1^{🇺🇸 RACKSPACE-IAD146.20.0.0/16 Rackspace US Inc}
			PTR	`mx1.emailsrvr.com`
MX	`mx2.emailsrvr.com`⁽²⁰⁾
		A	108.166.43.2^{🇺🇸 RACKSPACE-ORD108.166.0.0/18 Rackspace}
			PTR	`mx2.emailsrvr.com`
		A	146.20.161.2^{🇺🇸 RACKSPACE-IAD146.20.0.0/16 Rackspace US Inc}
			PTR	`mx2.emailsrvr.com`
		A	173.203.187.2^{🇺🇸 RACKSPACE-IAD173.203.128.0/18 Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229}
			PTR	`mx2.emailsrvr.com`
		A	184.106.54.2^{🇺🇸 RACKSPACE-ORD184.106.54.0/24 Rackspace ORD}
			PTR	`mx2.emailsrvr.com`
TXT	`v=spf1.a.mx.include:emailsrvr.com.~all`
SOA	`ns-766.awsdns-31.net`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=1775935282

Same first word

drbrianfoster.com

DNS History

53 records (14 active, 39 former)

●NSns-1154.awsdns-16.org2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns-1701.awsdns-20.co.uk2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns-336.awsdns-42.com2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns-766.awsdns-31.net2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

○NSns1.vortala.com2015-06-27 → 2020-02-03 · 4 obs

● 2015-06-27 00:41:34
● 2020-02-03 15:28:04
○ 2026-02-16 21:45:54
○ 2026-04-11 19:35:24

○NSns2.vortala.com2015-06-27 → 2020-02-03 · 4 obs

● 2015-06-27 00:41:34
● 2020-02-03 15:28:04
○ 2026-02-16 21:45:54
○ 2026-04-11 19:35:24

●NSns3.vortala.com2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns4.vortala.com2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns5.vortala.com2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●NSns6.vortala.com2026-02-16 → 2026-04-11 · 3 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-04-11 19:35:24

●MXmx1.emailsrvr.com2015-06-27 → 2026-04-11 · 2 obs

● 2015-06-27 00:41:34
● 2026-04-11 19:35:24

●MXmx2.emailsrvr.com2015-06-27 → 2026-04-11 · 2 obs

● 2015-06-27 00:41:34
● 2026-04-11 19:35:24

○A108.156.60.592026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-23 22:09:40
● 2026-03-23 23:09:48
○ 2026-03-24 04:53:08
○ 2026-04-11 19:35:24

○A108.156.60.612026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-23 22:09:40
● 2026-03-23 23:09:48
○ 2026-03-24 04:53:08
○ 2026-04-11 19:35:24

○A108.156.60.722026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-23 22:09:40
● 2026-03-23 23:09:48
○ 2026-03-24 04:53:08
○ 2026-04-11 19:35:24

○A108.156.60.772026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-23 22:09:40
● 2026-03-23 23:09:48
○ 2026-03-24 04:53:08
○ 2026-04-11 19:35:24

○A13.227.107.192026-04-07 → 2026-04-11 · 12 obs

○ 2026-04-05 16:32:52
● 2026-04-07 12:44:34
○ 2026-04-07 17:49:18
● 2026-04-09 12:50:30
● 2026-04-09 16:48:26
○ 2026-04-09 21:49:22
● 2026-04-09 23:50:04
○ 2026-04-10 03:42:12
○ 2026-04-11 11:07:16
● 2026-04-11 14:01:38
○ 2026-04-11 19:35:20
○ 2026-04-11 19:35:24

○A13.227.107.362026-04-07 → 2026-04-11 · 12 obs

○A13.227.107.42026-04-07 → 2026-04-11 · 12 obs

○A13.227.107.922026-04-07 → 2026-04-11 · 12 obs

○A162.209.41.1822015-06-27 → 2020-02-03 · 4 obs

● 2015-06-27 00:41:34
● 2020-02-03 15:28:04
○ 2026-02-16 21:45:54
○ 2026-04-11 19:35:24

●A18.161.205.1032026-04-11 → 2026-04-11 · 6 obs

○ 2026-04-11 09:08:58
● 2026-04-11 10:26:50
○ 2026-04-11 11:07:16
○ 2026-04-11 14:01:38
● 2026-04-11 19:35:20
● 2026-04-11 19:35:24

●A18.161.205.212026-04-11 → 2026-04-11 · 6 obs

○ 2026-04-11 09:08:58
● 2026-04-11 10:26:50
○ 2026-04-11 11:07:16
○ 2026-04-11 14:01:38
● 2026-04-11 19:35:20
● 2026-04-11 19:35:24

●A18.161.205.662026-04-11 → 2026-04-11 · 6 obs

○ 2026-04-11 09:08:58
● 2026-04-11 10:26:50
○ 2026-04-11 11:07:16
○ 2026-04-11 14:01:38
● 2026-04-11 19:35:20
● 2026-04-11 19:35:24

●A18.161.205.952026-04-11 → 2026-04-11 · 6 obs

○ 2026-04-11 09:08:58
● 2026-04-11 10:26:50
○ 2026-04-11 11:07:16
○ 2026-04-11 14:01:38
● 2026-04-11 19:35:20
● 2026-04-11 19:35:24

○A18.165.242.1142026-02-27 → 2026-04-11 · 48 obs

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

○A18.165.242.342026-02-27 → 2026-04-11 · 48 obs

○A18.165.242.532026-02-27 → 2026-04-11 · 48 obs

○A18.165.242.862026-02-27 → 2026-04-11 · 48 obs

○A18.165.9.102026-03-21 → 2026-03-21 · 4 obs

○ 2026-03-21 08:21:08
● 2026-03-21 09:38:38
○ 2026-03-21 15:52:30
○ 2026-04-11 19:35:24

○A18.165.9.1282026-03-21 → 2026-03-21 · 4 obs

○ 2026-03-21 08:21:08
● 2026-03-21 09:38:38
○ 2026-03-21 15:52:30
○ 2026-04-11 19:35:24

○A18.165.9.182026-03-21 → 2026-03-21 · 4 obs

○ 2026-03-21 08:21:08
● 2026-03-21 09:38:38
○ 2026-03-21 15:52:30
○ 2026-04-11 19:35:24

○A18.165.9.292026-03-21 → 2026-03-21 · 4 obs

○ 2026-03-21 08:21:08
● 2026-03-21 09:38:38
○ 2026-03-21 15:52:30
○ 2026-04-11 19:35:24

○A3.162.125.1152026-02-16 → 2026-03-28 · 30 obs

○ 2020-02-03 15:28:04
● 2026-02-16 21:45:54
● 2026-02-25 05:03:22
○ 2026-02-27 14:08:08
● 2026-02-28 15:38:22
● 2026-03-01 04:07:50
○ 2026-03-01 17:26:58
○ 2026-03-02 12:50:16
● 2026-03-03 01:06:40
● 2026-03-05 02:36:00
○ 2026-03-05 06:14:54
○ 2026-03-05 07:00:40
● 2026-03-06 15:40:40
● 2026-03-07 02:06:26
○ 2026-03-08 06:00:28
○ 2026-03-19 06:45:10
● 2026-03-19 07:39:20
● 2026-03-19 17:01:28
○ 2026-03-20 01:24:36
● 2026-03-20 09:44:08
● 2026-03-21 08:21:08
○ 2026-03-21 09:38:38
○ 2026-03-24 04:53:08
● 2026-03-24 10:28:50
● 2026-03-24 11:38:42
○ 2026-03-25 01:12:12
● 2026-03-26 19:31:36
● 2026-03-28 06:10:40
○ 2026-03-29 13:50:42
○ 2026-04-11 19:35:24

○A3.162.125.42026-02-16 → 2026-03-28 · 30 obs

○A3.162.125.802026-02-16 → 2026-03-28 · 30 obs

○A3.162.125.962026-02-16 → 2026-03-28 · 30 obs

○A3.168.147.102026-03-05 → 2026-03-23 · 15 obs

○ 2026-03-05 02:36:00
● 2026-03-05 06:14:54
○ 2026-03-05 07:00:40
○ 2026-03-17 10:48:38
● 2026-03-17 13:14:22
○ 2026-03-17 14:09:34
● 2026-03-18 07:15:06
● 2026-03-18 08:51:20
○ 2026-03-18 10:35:36
● 2026-03-19 06:45:10
○ 2026-03-19 07:39:20
○ 2026-03-23 18:05:56
● 2026-03-23 22:09:40
○ 2026-03-23 23:09:48
○ 2026-04-11 19:35:24

○A3.168.147.1052026-03-05 → 2026-03-23 · 15 obs

○A3.168.147.1102026-03-05 → 2026-03-23 · 15 obs

○A3.168.147.392026-03-05 → 2026-03-23 · 15 obs

○A3.174.29.132026-04-09 → 2026-04-11 · 15 obs

○ 2026-04-09 16:48:26
● 2026-04-09 21:49:22
○ 2026-04-09 23:50:04
● 2026-04-10 03:42:12
● 2026-04-10 08:02:44
○ 2026-04-10 09:14:48
● 2026-04-10 12:51:58
● 2026-04-10 21:15:56
○ 2026-04-11 01:55:52
● 2026-04-11 03:32:58
● 2026-04-11 09:08:58
○ 2026-04-11 10:26:50
● 2026-04-11 11:07:16
○ 2026-04-11 14:01:38
○ 2026-04-11 19:35:24

○A3.174.29.382026-04-09 → 2026-04-11 · 15 obs

○A3.174.29.422026-04-09 → 2026-04-11 · 15 obs

○A3.174.29.872026-04-09 → 2026-04-11 · 15 obs

○A54.239.195.452026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-22 16:07:02
● 2026-03-23 18:05:56
○ 2026-03-23 22:09:40
○ 2026-04-11 19:35:24

○A54.239.195.462026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-22 16:07:02
● 2026-03-23 18:05:56
○ 2026-03-23 22:09:40
○ 2026-04-11 19:35:24

○A54.239.195.632026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-22 16:07:02
● 2026-03-23 18:05:56
○ 2026-03-23 22:09:40
○ 2026-04-11 19:35:24

○A54.239.195.692026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-22 16:07:02
● 2026-03-23 18:05:56
○ 2026-03-23 22:09:40
○ 2026-04-11 19:35:24

○A99.84.160.342026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-08 18:01:52
● 2026-03-14 16:04:30
○ 2026-03-14 17:44:08
○ 2026-04-11 19:35:24

○A99.84.160.512026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-08 18:01:52
● 2026-03-14 16:04:30
○ 2026-03-14 17:44:08
○ 2026-04-11 19:35:24

○A99.84.160.582026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-08 18:01:52
● 2026-03-14 16:04:30
○ 2026-03-14 17:44:08
○ 2026-04-11 19:35:24

○A99.84.160.782026-03-14 → 2026-03-14 · 4 obs

○ 2026-03-08 18:01:52
● 2026-03-14 16:04:30
○ 2026-03-14 17:44:08
○ 2026-04-11 19:35:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net...	-
drbrianfoster.com	ns3.vortala.com, ns5.vortala.com, ns6.vortala.com, ns4.vortala.com	4 records

✅ Authoritative Response

Server:205.251.193.80

NS records: ns3.vortala.com, ns5.vortala.com, ns6.vortala.com, ns4.vortala.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for drbrianfoster.com (unsigned zone)

⏱️ Timing

Total: 620ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.161.205.95, 18.161.205.103...`
NS	4	`ns-1154.awsdns-16.org, ns-1701.awsdns-20.co.uk...`
MX	2	`mx1.emailsrvr.com (pri: 10), mx2.emailsrvr.com (pri: 20)`
TXT	1	`v=spf1.a.mx.include:emailsrvr.com.~all`
SOA	1	`ns-766.awsdns-31.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns3.vortala.com, ns5.vortala.com, ns6.vortala.com...)

Analysis

IP Addresses

drbrianfoster.com points to four IP numbers: 18.161.205.21, 18.161.205.66, 18.161.205.95 and 18.161.205.103.

Other host names, for instance www.cosmunity.com, librarywiley.com, www.tiandiweb.com, book.aferry.com and savee.in share IP numbers with drbrianfoster.com.

Name Servers

drbrianfoster.com is delegated to eight name servers: ns-336.awsdns-42.com, ns3.vortala.com, ns4.vortala.com, ns5.vortala.com, ns6.vortala.com, ns-766.awsdns-31.net, ns-1154.awsdns-16.org and ns-1701.awsdns-20.co.uk.

drbrianfoster.com at least partially shares its name servers with other domains, for instance 73.184.54.in-addr.arpa, favy.tips, 220.82.35.in-addr.arpa, vivareal.org and 99.32.184.in-addr.arpa.

these name servers are commonly used together with ns1-24-us-west-2.ec2-rdns.amazonaws.com, ns2-24-us-west-2.ec2-rdns.amazonaws.com, ns3-24-us-west-2.ec2-rdns.amazonaws.com and ns4-24-us-west-2.ec2-rdns.amazonaws.com.

Names with two IP numbers:

ns-336.awsdns-42.com points to: 2600:9000:5301:5000::1 and 205.251.193.80

ns3.vortala.com points to: 2600:9000:5302:fe00::1 and 205.251.194.254

ns4.vortala.com points to: 2600:9000:5301:5000::1 and 205.251.193.80

ns5.vortala.com points to: 2600:9000:5306:a500::1 and 205.251.198.165

ns6.vortala.com points to: 2600:9000:5304:8200::1 and 205.251.196.130

ns-766.awsdns-31.net points to: 2600:9000:5302:fe00::1 and 205.251.194.254

ns-1154.awsdns-16.org points to: 2600:9000:5304:8200::1 and 205.251.196.130

ns-1701.awsdns-20.co.uk points to: 2600:9000:5306:a500::1 and 205.251.198.165

Host names that point to 2600:9000:5301:5000::1: ns-336.awsdns-42.com and ns4.vortala.com

Host names that point to 205.251.193.80: ns-336.awsdns-42.com and ns4.vortala.com

Host names that point to 2600:9000:5302:fe00::1: ns3.vortala.com and ns-766.awsdns-31.net

Host names that point to 205.251.194.254: ns3.vortala.com and ns-766.awsdns-31.net

Host names that point to 2600:9000:5306:a500::1: ns5.vortala.com and ns-1701.awsdns-20.co.uk

Host names that point to 205.251.198.165: ns5.vortala.com and ns-1701.awsdns-20.co.uk

Host names that point to 2600:9000:5304:8200::1: ns6.vortala.com and ns-1154.awsdns-16.org

Host names that point to 205.251.196.130: ns6.vortala.com and ns-1154.awsdns-16.org

Mail Servers

Two mail servers mx1.emailsrvr.com and mx2.emailsrvr.com handle drbrianfoster.com.

drbrianfoster.com uses the same mail server setup as other domains such as backbayresidential.com, wild-goose-qigong.com, orrell-live.co.uk, apexsouthflorida.com and braidbeatz.com.

drbrianfoster.com shares some mail servers with other domains, including emaxllc.com, icreon.us, aire-qiigo.com, eqafy.com and mjc.biz.

Host names with four IP numbers:

mx2.emailsrvr.com points to: 108.166.43.2, 146.20.161.2, 173.203.187.2 and 184.106.54.2.

Host names with one IP number:

mx1.emailsrvr.com points to: 146.20.161.1.

drbrianfoster.com - robtex.com