bestblackboard.com - robtex.com

bestblackboard.com

DNSSEC⚠️ Not signed
A154.197.139.23🇭🇰 MYCLOUD-AS-AP154.197.128.0/18 CloudFly Net Inc
NSns1.myhostadmin.net ⭐ ⚠️ Not in parent delegation
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A60.247.150.254🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns1.363.hk ⚠️ Not in zone NS records
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A60.247.150.254🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns2.363.hk ⚠️ Not in zone NS records
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.73🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A211.149.230.100🇨🇳 CHINANET-SCIDC-AS-AP211.149.224.0/19 chinanet SC province network-client
NSns2.myhostadmin.net ⚠️ Not in parent delegation
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.73🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A61.240.129.143🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)
A211.149.230.100🇨🇳 CHINANET-SCIDC-AS-AP211.149.224.0/19 chinanet SC province network-client
NSns3.363.hk ⚠️ Not in zone NS records
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.77🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns3.myhostadmin.net ⚠️ Not in parent delegation
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.77🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns4.363.hk ⚠️ Not in zone NS records
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
A211.149.230.100🇨🇳 CHINANET-SCIDC-AS-AP211.149.224.0/19 chinanet SC province network-client
NSns4.myhostadmin.net ⚠️ Not in parent delegation
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
A211.149.230.100🇨🇳 CHINANET-SCIDC-AS-AP211.149.224.0/19 chinanet SC province network-client
NSns5.363.hk ⚠️ Not in zone NS records
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.73🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns5.myhostadmin.net ⚠️ Not in parent delegation
A240e:d9:c200::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A61.172.183.73🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC
A118.123.249.114🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns6.363.hk ⚠️ Not in zone NS records
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A60.247.150.13🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
NSns6.myhostadmin.net ⚠️ Not in parent delegation
A240e:d9:c200:1::2🇨🇳 CHINANET-SCIDC-AS-AP240e:d9:c000::/36 SICHUANIDC province network
A60.247.150.13🇨🇳 CHINANET-SCIDC-AS-AP60.247.128.0/18 SICHUANIDC province network
A118.123.253.132🇨🇳 CHINANET-SCIDC-AS-AP118.123.240.0/20 CHINANET SiChuan Telecom Internet Data Center
SOAns1.myhostadmin.netdnsconct@myhostadmin.net 2025-08-10 #17

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778550061

Same first word

bestblackboard.com

DNS History

23 records (13 active, 10 former)

2017201820192020202120222023202420252026NSns1.363.hkns1.myhostadmin.netns2.363.hkns2.myhostadmin.netns3.363.hkns3.myhostadmin.netns4.363.hkns4.myhostadmin.netns5.363.hkns5.myhostadmin.netns6.363.hkns6.myhostadmin.netns25.domaincontrol.comns26.domaincontrol.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA154.197.139.23104.198.125.104120.138.8.153154.197.226.70
●NSns1.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns1.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns2.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns2.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
○NSns25.domaincontrol.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○NSns26.domaincontrol.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
●NSns3.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns3.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns4.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns4.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns5.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns5.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns6.363.hk2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
●NSns6.myhostadmin.net2026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
○MXalt1.aspmx.l.google.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○MXalt2.aspmx.l.google.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○MXaspmx.l.google.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○MXaspmx2.googlemail.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○MXaspmx3.googlemail.com2016-12-01 → 2017-06-03 · 4 obs
● 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
○A104.198.125.1042016-12-01 → 2016-12-01 · 3 obs
● 2016-12-01 17:46:02
○ 2017-06-03 20:00:02
○ 2026-05-12 02:06:36
○A120.138.8.1532017-06-03 → 2017-06-03 · 4 obs
○ 2016-12-01 17:46:02
● 2017-06-03 20:00:02
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36
●A154.197.139.232026-03-30 → 2026-05-12 · 3 obs
○ 2017-06-03 20:00:02
● 2026-03-30 17:35:34
● 2026-05-12 02:06:36
○A154.197.226.702026-03-30 → 2026-05-12 · 2 obs
○ 2026-03-30 17:35:34
○ 2026-05-12 02:06:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
bestblackboard.comns1.363.hk, ns2.363.hk, ns3.363.hk, ns4.363.hk...-

✅ Authoritative Response

Server:118.123.249.114

NS records: ns1.363.hk, ns2.363.hk, ns3.363.hk, ns4.363.hk, ns5.363.hk, ns6.363.hk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bestblackboard.com (unsigned zone)

⏱️ Timing

Total: 2055ms | Queries: -

📄 Records

TypeCountSample Data
A1154.197.139.23
NS6ns5.myhostadmin.net, ns2.myhostadmin.net...
SOA1ns1.myhostadmin.net dnsconct.myhostadmin

Analysis

IP Addresses

bestblackboard.com points to a single IP number: 154.197.139.23.

Name Servers

bestblackboard.com is delegated to twelve name servers: ns1.363.hk, ns2.363.hk, ns3.363.hk, ns4.363.hk, ns5.363.hk, ns6.363.hk, ns1.myhostadmin.net, ns2.myhostadmin.net, ns3.myhostadmin.net, ns4.myhostadmin.net, ns5.myhostadmin.net and ns6.myhostadmin.net.

bestblackboard.com at least partially shares name servers with other domains, for instance nchpsp.com, hzkjd.com, wztjyyyxgs.cn, aqpxzx.com and pbtgnm.cn.

Host names with four IPs:

ns1.363.hk points to: 240e:d9:c200::2, 60.247.150.254, 118.123.249.114 and 118.123.253.132.

ns1.myhostadmin.net points to: 240e:d9:c200::2, 60.247.150.254, 118.123.249.114 and 118.123.253.132.

ns2.myhostadmin.net points to: 240e:d9:c200:1::2, 61.172.183.73, 61.240.129.143 and 211.149.230.100.

Host names with three IPs:

ns2.363.hk points to: 240e:d9:c200:1::2, 61.172.183.73 and 211.149.230.100.

ns3.363.hk points to: 240e:d9:c200::2, 61.172.183.77 and 118.123.249.114.

ns4.363.hk points to: 240e:d9:c200:1::2, 118.123.253.132 and 211.149.230.100.

ns5.363.hk points to: 240e:d9:c200::2, 61.172.183.73 and 118.123.249.114.

ns6.363.hk points to: 240e:d9:c200:1::2, 60.247.150.13 and 118.123.253.132.

ns3.myhostadmin.net points to: 240e:d9:c200::2, 61.172.183.77 and 118.123.249.114.

ns4.myhostadmin.net points to: 240e:d9:c200:1::2, 118.123.253.132 and 211.149.230.100.

ns5.myhostadmin.net points to: 240e:d9:c200::2, 61.172.183.73 and 118.123.249.114.

ns6.myhostadmin.net points to: 240e:d9:c200:1::2, 60.247.150.13 and 118.123.253.132.

Host names that point to 240e:d9:c200::2 : ns1.363.hk, ns1.myhostadmin.net, ns3.363.hk, ns5.363.hk, ns3.myhostadmin.net and ns5.myhostadmin.net.

Host names that point to 60.247.150.254 : ns1.363.hk and ns1.myhostadmin.net.

Host names that point to 118.123.249.114 : ns1.363.hk, ns1.myhostadmin.net, ns3.363.hk, ns5.363.hk, ns3.myhostadmin.net and ns5.myhostadmin.net.

Host names that point to 118.123.253.132 : ns1.363.hk, ns1.myhostadmin.net, ns4.363.hk, ns6.363.hk, ns4.myhostadmin.net and ns6.myhostadmin.net.

Host names that point to 240e:d9:c200:1::2 : ns2.myhostadmin.net, ns2.363.hk, ns4.363.hk, ns6.363.hk, ns4.myhostadmin.net and ns6.myhostadmin.net.

Host names that point to 61.172.183.73 : ns2.myhostadmin.net, ns2.363.hk, ns5.363.hk and ns5.myhostadmin.net.

Host names that point to 211.149.230.100 : ns2.myhostadmin.net, ns2.363.hk, ns4.363.hk and ns4.myhostadmin.net.

Host names that point to 61.172.183.77 : ns3.363.hk and ns3.myhostadmin.net.

Host names that point to 60.247.150.13 : ns6.363.hk and ns6.myhostadmin.net.