certaintyworks.com - robtex.com
certaintyworks.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 41.203.18.177🇿🇦 xneelo41.203.16.0/20 -JHB-BLK | ||||||
| PTR | regonly.jnb2.host-h.net | ||||||
| NS | ns1.host-h.net ⭐ | ||||||
| A | 129.232.248.30🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns1.host-h.net | ||||||
| NS | ns1.dns-h.com | ||||||
| A | 129.232.248.31🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns1.dns-h.com | ||||||
| NS | ns2.dns-h.com | ||||||
| A | 129.232.248.41🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns2.dns-h.com | ||||||
| NS | ns2.host-h.net | ||||||
| A | 129.232.248.40🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns2.host-h.net | ||||||
| MX | mail.certaintyworks.com ⭐ | ||||||
| A | 41.203.18.177🇿🇦 xneelo41.203.16.0/20 -JHB-BLK | ||||||
| PTR | regonly.jnb2.host-h.net | ||||||
| TXT | v=spf1 mx a include:spf.host-h.net ?all | ||||||
| SOA | ns1.host-h.netpostmaster@your-server.co.za 2021-10-01 #0 | ||||||
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.netnstld@verisign-grs.com serial=1774987867 | ||||||
Subdomains
mail.certaintyworks.com |
Same first word
certaintyworks.com |
DNS History
6 records (6 active, 0 former)
●NSns1.host-h.net2017-08-09 → 2026-03-31 · 2 obs
● 2026-03-31 20:41:16
●NSns2.host-h.net2017-08-09 → 2026-03-31 · 2 obs
● 2026-03-31 20:41:16
●MXmail.certaintyworks.com2017-08-09 → 2026-03-31 · 2 obs
● 2026-03-31 20:41:16
●A41.203.18.1772017-08-09 → 2026-03-31 · 2 obs
● 2026-03-31 20:41:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | h.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net... | - |
| certaintyworks.com | ns1.host-h.net, ns2.host-h.net, ns1.dns-h.com, ns2.dns-h.com | 2 records |
✅ Authoritative Response
Server:129.232.248.41
NS records: ns1.host-h.net, ns2.host-h.net, ns1.dns-h.com, ns2.dns-h.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certaintyworks.com (unsigned zone)
⏱️ Timing
Total: 1439ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 41.203.18.177 |
| NS | 4 | ns1.host-h.net, ns2.host-h.net... |
| MX | 1 | mail.certaintyworks.com (pri: 10) |
| TXT | 1 | v=spf1 mx a include:spf.host-h.net ?all |
| SOA | 1 | ns1.host-h.net postmaster.your-server.co |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.dns-h.com, ns2.dns-h.com)
Analysis
Hierarchy
certaintyworks.com is the parent of mail.certaintyworks.com.
IP Addresses
certaintyworks.com resolves to a single IP: 41.203.18.177.
Other host names, for instance mail.ebcoll.co.za, angelobotha.com, digitaltariff.com, mail.bardahleurope.eu and mail.protrade.net share IP numbers with certaintyworks.com.
Name Servers
certaintyworks.com is delegated to four name servers: ns1.dns-h.com, ns2.dns-h.com, ns1.host-h.net and ns2.host-h.net.
certaintyworks.com shares some name servers with other domains, for example rehoboth.org.za, ahm.co.za, ftptechnologies.com, mymassage.co.za and kahn.co.za.
These name servers are commonly used with the name servers ns1a.your-server.co.za.
Host names with a single IP
ns1.dns-h.com resolves to 129.232.248.31
ns2.dns-h.com resolves to 129.232.248.41
ns1.host-h.net resolves to 129.232.248.30
ns2.host-h.net resolves to 129.232.248.40
Mail Servers
certaintyworks.com is handled by a single mail server, mail.certaintyworks.com.
Host name mail.certaintyworks.com points to IP 41.203.18.177.