openbook.com.sg - robtex.com
openbook.com.sg
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns135.sgcloudhosting.cloud ⚠️ Not in zone NS records | ||||||
| A | 110.4.45.135🇲🇾 EXABYTES-AS-AP110.4.45.0/24 Exa Bytes Network Sdn.Bhd. 1-18-8 Suntech Penang Cybercity Lintang Mayang Pasir 3 | ||||||
| PTR | mschosting.com | ||||||
| NS | ns136.sgcloudhosting.cloud ⚠️ Not in zone NS records | ||||||
| A | 72.18.132.136🇺🇸 WEHOST72.18.128.0/19 NET-WEHOST-1 | ||||||
| PTR | wpcontributor3.secure-dns.net | ||||||
com.sg
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ds.sgnic.sg ⭐ | ||||||
| NS | dsany2.sgnic.sg ⚠️ Not in parent delegation | ||||||
| NS | dsany3.sgnic.sg ⚠️ Not in parent delegation | ||||||
| NS | dsany4.sgnic.sg ⚠️ Not in parent delegation | ||||||
| NS | pch.sgzones.sg ⚠️ Not in parent delegation | ||||||
| SOA | ds.sgnic.sgdna@sgnic.sg serial=2605151930 | ||||||
Same first word
Similar names
DNS History
7 records (2 active, 5 former)
○NScdns1.basicbrix.com2015-08-31 → 2017-04-05 · 4 obs
● 2017-04-05 21:42:22
○ 2026-04-02 08:56:16
○ 2026-05-15 19:56:34
○NScdns2.basicbrix.com2015-08-31 → 2017-04-05 · 4 obs
● 2017-04-05 21:42:22
○ 2026-04-02 08:56:16
○ 2026-05-15 19:56:34
○NScdns3.basicbrix.com2015-08-31 → 2017-04-05 · 4 obs
● 2017-04-05 21:42:22
○ 2026-04-02 08:56:16
○ 2026-05-15 19:56:34
●NSns135.sgcloudhosting.cloud2026-04-02 → 2026-05-15 · 3 obs
● 2026-04-02 08:56:16
● 2026-05-15 19:56:34
●NSns136.sgcloudhosting.cloud2026-04-02 → 2026-05-15 · 3 obs
● 2026-04-02 08:56:16
● 2026-05-15 19:56:34
○MXmail.openbook.com.sg2015-08-31 → 2017-04-05 · 4 obs
● 2017-04-05 21:42:22
○ 2026-04-02 08:56:16
○ 2026-05-15 19:56:34
○A103.239.221.522015-08-31 → 2017-04-05 · 4 obs
● 2017-04-05 21:42:22
○ 2026-04-02 08:56:16
○ 2026-05-15 19:56:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| sg | ns4.apnic.net, dsany3.sgnic.sg, dsany2.sgnic.sg, pch.sgzones.sg... | 10 records |
| openbook.com.sg | ns135.sgcloudhosting.cloud, ns136.sgcloudhosting.cloud | - |
✅ Authoritative Response
Server:72.18.132.136
NS records: ns135.sgcloudhosting.cloud, ns136.sgcloudhosting.cloud
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openbook.com.sg (unsigned zone)
⏱️ Timing
Total: 3202ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 10
In-bailiwick: 8 (dsany4.sgnic.sg, dsany3.sgnic.sg, dsany2.sgnic.sg...)
Out-of-bailiwick: 2 (ns4.apnic.net, ns4.apnic.net)
Analysis
Name Servers
openbook.com.sg's delegation uses two name servers, ns135.sgcloudhosting.cloud and ns136.sgcloudhosting.cloud.
openbook.com.sg shares the same name server setup as other domains, for example pddesignstudio.com, aox.com.sg, jtn.com.sg, moonrabbit.com.sg and searchlab.com.sg.
openbook.com.sg at least partially shares name servers with other domains, including albony.com.sg, orcacreation.com, cnergy.com.sg, ariestools.com.sg and cescentre.com.
These name servers are commonly used with the name servers ns131.sgcloudhosting.comns132.sgcloudhosting.comns133.sgcloudhosting.comns134.sgcloudhosting.comns135.mschosting.cloud and ns136.mschosting.cloud.
Host names with a single IP:
ns135.sgcloudhosting.cloud points to 110.4.45.135.
ns136.sgcloudhosting.cloud points to 72.18.132.136.