readhbr.org - robtex.com

readhbr.org

DNSSEC⚠️ Not signed
A3.33.139.32🇺🇸 Amazon3.33.128.0/20
PTRaeedc42b70c898c66.awsglobalaccelerator.com
NSns1.markmonitor.com
A2620:10a:80a8::1🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.160.1🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns2.markmonitor.com
A2001:67c:10b8::1🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net
PTRns2.markmonitor.com
A176.97.158.1🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net
PTRns2.markmonitor.com
NSns3.markmonitor.com
A2620:10a:80a9::1🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.161.1🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns4.markmonitor.com
A2001:67c:1bc::1🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast
PTRns1.markmonitor.com
A192.174.68.1🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net
PTRns1.markmonitor.com
NSns5.markmonitor.com
A2620:10a:80a8::2🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.160.2🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
NSns6.markmonitor.com
A2001:67c:10b8::3🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net
PTRns6.markmonitor.com
A176.97.158.3🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net
PTRns6.markmonitor.com
NSns7.markmonitor.com
A2620:10a:80a9::2🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
A149.112.161.2🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada
TXTv=spf1 -all
SOAns1.markmonitor.comhostmaster@markmonitor.com 2023-08-09 #2

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=1784992355

Same first word

Similar names

DNS History

17 records (8 active, 9 former)

20162017201820192020202120222023202420252026NSns1.markmonitor.comns2.markmonitor.comns3.markmonitor.comns4.markmonitor.comns5.markmonitor.comns6.markmonitor.comns7.markmonitor.comae-prod-ns01.hbsp.harvard.eduae-prod-ns02.hbsp.harvard.eduae-qa-ns01.hbsp.harvard.eduae-qa-ns02.hbsp.harvard.eduns1.hbsp.harvard.eduns2.hbsp.harvard.eduA3.33.139.3252.44.137.2352.71.228.10954.165.102.160
NSae-prod-ns01.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSae-prod-ns02.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSae-qa-ns01.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSae-qa-ns02.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSns1.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSns1.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns2.hbsp.harvard.edu2015-08-09 → 2017-10-11 · 4 obs
● 2015-08-09 13:46:34
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
NSns2.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns3.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns4.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns5.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns6.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
NSns7.markmonitor.com2026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
A3.33.139.322026-07-18 → 2026-07-25 · 3 obs
○ 2017-10-11 08:30:46
● 2026-07-18 07:05:58
● 2026-07-25 16:01:58
A52.44.137.232016-11-25 → 2017-10-11 · 5 obs
○ 2016-09-23 06:32:34
● 2016-11-25 10:17:42
● 2017-10-11 08:30:46
○ 2026-07-18 07:05:58
○ 2026-07-25 16:01:58
A52.71.228.1092016-05-18 → 2016-09-23 · 5 obs
○ 2016-03-15 19:49:42
● 2016-05-18 08:50:00
● 2016-09-23 06:32:34
○ 2016-11-25 10:17:42
○ 2026-07-25 16:01:58
A54.165.102.1602015-08-09 → 2016-03-15 · 4 obs
● 2015-08-09 13:46:34
● 2016-03-15 19:49:42
○ 2016-05-18 08:50:00
○ 2026-07-25 16:01:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org-
readhbr.orgns2.markmonitor.com, ns6.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...-

✅ Authoritative Response

Server:149.112.161.2

NS records: ns2.markmonitor.com, ns6.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns7.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for readhbr.org (unsigned zone)

⏱️ Timing

Total: 770ms | Queries: -

📄 Records

TypeCountSample Data
A13.33.139.32
NS7ns1.markmonitor.com, ns2.markmonitor.com...
TXT1v=spf1 -all
SOA1ns1.markmonitor.com hostmaster.markmonit

Analysis

IP Addresses

readhbr.org has exactly one IP address — 3.33.139.32.

stat1.firstcall.com, tenta.vip, salesforceevents.co plus two other host names have IP numbers in common with readhbr.org.

Name Servers

The DNS delegation for readhbr.org covers 7 name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and 4 more.

readhbr.org partially shares its NS delegation with several other domains, including k-swiss.no, justdoit.gz.cn, carfaxforlife.com and two others.

The name servers ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com are often found in use alongside these name servers.

Host names pointing to two IP addresses:

ns1.markmonitor.com maps to two IP addresses — 149.112.160.1 and 2620:10a:80a8::1.

ns2.markmonitor.com maps to two IP addresses — 176.97.158.1 and 2001:67c:10b8::1.

ns3.markmonitor.com maps to two IP addresses — 149.112.161.1 and 2620:10a:80a9::1.

ns4.markmonitor.com maps to two IP addresses — 192.174.68.1 and 2001:67c:1bc::1.

ns5.markmonitor.com maps to two IP addresses — 149.112.160.2 and 2620:10a:80a8::2.

ns6.markmonitor.com maps to two IP addresses — 176.97.158.3 and 2001:67c:10b8::3.

ns7.markmonitor.com maps to two IP addresses — 149.112.161.2 and 2620:10a:80a9::2.