drstern.org - robtex.com

drstern.org

DNSSEC⚠️ Not signed
A32.194.40.165
PTRec2-32-194-40-165.compute-1.amazonaws.com
A54.156.247.101🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix
A98.95.25.44🇺🇸 Amazon98.88.0.0/13 EC2 IAD prefix
NSns-857.awsdns-43.net ⭐
A2600:9000:5303:5900::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
PTRns-857.awsdns-43.net
A205.251.195.89🇺🇸 Amazon205.251.195.0/24 prefix
PTRns-857.awsdns-43.net
NSns-1313.awsdns-36.org
A2600:9000:5305:2100::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront
PTRns-1313.awsdns-36.org
A205.251.197.33🇺🇸 Amazon205.251.197.0/24 prefix
PTRns-1313.awsdns-36.org
NSns-1841.awsdns-38.co.uk
A2600:9000:5307:3100::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront
PTRns-1841.awsdns-38.co.uk
A205.251.199.49🇺🇸 Amazon205.251.199.0/24 prefix
PTRns-1841.awsdns-38.co.uk
NSns-224.awsdns-28.com
A2600:9000:5300:e000::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront
PTRns-224.awsdns-28.com
A205.251.192.224🇺🇸 Amazon205.251.192.0/24 prefix
PTRns-224.awsdns-28.com
MXdrstern-org.mail.protection.outlook.com ⭐
A2a01:111:f403:c801::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sa9pr02cu00200.inbound.protection.outlook.com
A2a01:111:f403:c946::2🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-ch4pr04cu00102.inbound.protection.outlook.com
A2a01:111:f403:f907::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-dm1pr04cu00201.inbound.protection.outlook.com
A2a01:111:f403:f90a::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bn8pr03cu00201.inbound.protection.outlook.com
A52.101.8.34🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-dm2pr04cu00102.inbound.protection.outlook.com
A52.101.42.14🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-mw2pr04cu00106.inbound.protection.outlook.com
A52.101.50.13🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-mw2pr02cu00605.inbound.protection.outlook.com
A52.101.194.3🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-ch1pr04cu00103.inbound.protection.outlook.com
TXTknowbe4-site-verification=dbfaf0b8720b64c651372b9284a9ba61
TXTv=spf1 include:spf.protection.outlook.com -all
SOAns-857.awsdns-43.netawsdns-hostmaster@amazon.com serial=1

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1776295320

Same first word

drstern.net
drstern.ca
drstern.co.kr
drstern.com
drstern.org

Similar names

nstderr.com
rtrends.com
drernst.eu
rstrend.com
drernst.fr
nerdstr.com
rdrents.com
rdstern.com
rtrends.net

DNS History

17 records (8 active, 9 former)

20162017201820192020202120222023202420252026NSns-1313.awsdns-36.orgns-1841.awsdns-38.co.ukns-224.awsdns-28.comns-857.awsdns-43.netns15.domaincontrol.comns16.domaincontrol.comMXdrstern-org.mail.protection.outlook.comalt1.aspmx.l.google.comaspmx.l.google.comA32.194.40.16554.156.247.10198.95.25.4423.22.39.8432.194.102.1552.71.105.13666.175.122.2966.175.122.30
●NSns-1313.awsdns-36.org2026-04-03 → 2026-04-15 · 3 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
● 2026-04-15 23:35:48
●NSns-1841.awsdns-38.co.uk2026-04-03 → 2026-04-15 · 3 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
● 2026-04-15 23:35:48
●NSns-224.awsdns-28.com2026-04-03 → 2026-04-15 · 3 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
● 2026-04-15 23:35:48
●NSns-857.awsdns-43.net2026-04-03 → 2026-04-15 · 3 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
● 2026-04-15 23:35:48
○NSns15.domaincontrol.com2015-07-07 → 2017-09-29 · 4 obs
● 2015-07-07 13:33:16
● 2017-09-29 04:48:12
○ 2026-04-03 19:39:24
○ 2026-04-15 23:35:48
○NSns16.domaincontrol.com2015-07-07 → 2017-09-29 · 4 obs
● 2015-07-07 13:33:16
● 2017-09-29 04:48:12
○ 2026-04-03 19:39:24
○ 2026-04-15 23:35:48
○MXalt1.aspmx.l.google.com2015-07-07 → 2017-09-29 · 4 obs
● 2015-07-07 13:33:16
● 2017-09-29 04:48:12
○ 2026-04-03 19:39:24
○ 2026-04-15 23:35:48
○MXaspmx.l.google.com2015-07-07 → 2017-09-29 · 4 obs
● 2015-07-07 13:33:16
● 2017-09-29 04:48:12
○ 2026-04-03 19:39:24
○ 2026-04-15 23:35:48
●MXdrstern-org.mail.protection.outlook.com2026-04-03 → 2026-04-15 · 3 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
● 2026-04-15 23:35:48
○A23.22.39.842026-04-03 → 2026-04-03 · 4 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
○ 2026-04-15 17:13:58
○ 2026-04-15 23:35:48
○A32.194.102.152026-04-03 → 2026-04-03 · 4 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
○ 2026-04-15 17:13:58
○ 2026-04-15 23:35:48
●A32.194.40.1652026-04-15 → 2026-04-15 · 3 obs
○ 2026-04-03 19:39:24
● 2026-04-15 17:13:58
● 2026-04-15 23:35:48
○A52.71.105.1362026-04-03 → 2026-04-03 · 4 obs
○ 2017-09-29 04:48:12
● 2026-04-03 19:39:24
○ 2026-04-15 17:13:58
○ 2026-04-15 23:35:48
●A54.156.247.1012026-04-15 → 2026-04-15 · 3 obs
○ 2026-04-03 19:39:24
● 2026-04-15 17:13:58
● 2026-04-15 23:35:48
○A66.175.122.292016-09-12 → 2017-09-29 · 5 obs
○ 2016-02-29 00:38:46
● 2016-09-12 13:09:44
● 2017-09-29 04:48:12
○ 2026-04-03 19:39:24
○ 2026-04-15 23:35:48
○A66.175.122.302015-07-07 → 2016-02-29 · 4 obs
● 2015-07-07 13:33:16
● 2016-02-29 00:38:46
○ 2016-09-12 13:09:44
○ 2026-04-15 23:35:48
●A98.95.25.442026-04-15 → 2026-04-15 · 3 obs
○ 2026-04-03 19:39:24
● 2026-04-15 17:13:58
● 2026-04-15 23:35:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
drstern.orgns-224.awsdns-28.com, ns-1313.awsdns-36.org, ns-857.awsdns-43.net, ns-1841.awsdns-38.co.uk1 record

✅ Authoritative Response

Server:205.251.199.49

NS records: ns-224.awsdns-28.com, ns-1313.awsdns-36.org, ns-857.awsdns-43.net, ns-1841.awsdns-38.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for drstern.org (unsigned zone)

⏱️ Timing

Total: 533ms | Queries: -

📄 Records

TypeCountSample Data
A354.156.247.101, 98.95.25.44...
NS4ns-1313.awsdns-36.org, ns-1841.awsdns-38.co.uk...
MX1drstern-org.mail.protection.outlook.com
TXT2knowbe4-site-verification=dbfaf0b8720b64, v=spf1 include:spf.protection.outlook.co
SOA1ns-857.awsdns-43.net awsdns-hostmaster.a

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-1313.awsdns-36.org)

Analysis

IP Addresses

drstern.org points to three IPs: 32.194.40.165, 54.156.247.101 and 98.95.25.44.

Name Servers

drstern.org is delegated to four name servers: ns-224.awsdns-28.com, ns-857.awsdns-43.net, ns-1313.awsdns-36.org and ns-1841.awsdns-38.co.uk.

drstern.org at least partially shares name servers with other domains, for example us3.aternity.com, sompo-cs.co.jp, lineguide.io, preti.com and creditunions.cc.

Host names with two IP numbers:

ns-224.awsdns-28.com points to: 2600:9000:5300:e000::1 and 205.251.192.224

ns-857.awsdns-43.net points to: 2600:9000:5303:5900::1 and 205.251.195.89

ns-1313.awsdns-36.org points to: 2600:9000:5305:2100::1 and 205.251.197.33

ns-1841.awsdns-38.co.uk points to: 2600:9000:5307:3100::1 and 205.251.199.49

Mail Servers

The drstern-org.mail.protection.outlook.com mail server handles drstern.org.

drstern-org.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c801::, 2a01:111:f403:c946::2, 2a01:111:f403:f907::1, 2a01:111:f403:f90a::1, 52.101.8.34, 52.101.42.14, 52.101.50.13 and 52.101.194.3.