certezza.com - dns.ninja
certezza.com
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=1785749287 | ||||||
Same first word
DNS History
12 records (9 active, 3 former)
●NSa.ns.ip-only.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●NSb.ns.ip-only.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●NSc.ns.ip-only.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●NSns1.certezza.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●NSns2.certezza.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●MXmx1.certezza.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
●MXmx2.certezza.net2015-06-24 → 2026-08-03 · 2 obs
● 2026-08-03 09:33:54
○A104.199.2.782017-06-28 → 2017-09-03 · 5 obs
● 2017-06-28 05:28:56
● 2017-09-03 15:39:52
○ 2026-03-24 04:37:14
○ 2026-08-03 09:33:54
○A2a01:2b0:3001:4000::1332015-06-24 → 2016-03-11 · 4 obs
● 2016-03-11 04:56:42
○ 2017-06-28 05:28:56
○ 2026-08-03 09:33:54
●A2a01:2b0:3001:5203::102026-03-24 → 2026-08-03 · 3 obs
● 2026-03-24 04:37:14
● 2026-08-03 09:33:54
○A82.99.51.1332015-06-24 → 2016-03-11 · 4 obs
● 2016-03-11 04:56:42
○ 2017-06-28 05:28:56
○ 2026-08-03 09:33:54
●A82.99.51.812026-03-24 → 2026-08-03 · 3 obs
● 2026-03-24 04:37:14
● 2026-08-03 09:33:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| certezza.com | ns1.certezza.net, a.ns.ip-only.net, b.ns.ip-only.net, c.ns.ip-only.net... | - |
✅ Authoritative Response
Server:82.99.51.132
NS records: ns1.certezza.net, a.ns.ip-only.net, b.ns.ip-only.net, c.ns.ip-only.net, ns2.certezza.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certezza.com (unsigned zone)
⏱️ Timing
Total: 1875ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 82.99.51.81 |
| AAAA | 1 | 2a01:2b0:3001:5203::10 |
| NS | 5 | ns2.certezza.net, c.ns.ip-only.net... |
| MX | 2 | mx2.certezza.net (pri: 10), mx1.certezza.net (pri: 5) |
| TXT | 1 | v=spf1 mx ip4:82.99.51.5 ip4:82.99.51.6 |
| SOA | 1 | ns1.certezza.net support.certezza.net |
Analysis
IP Addresses
certezza.com resolves to the IP addresses 82.99.51.81 and 2a01:2b0:3001:5203::10
www.sakerhetsdagen.se, crl.certezza.net, visselblas.certezza.net plus two other host names have IP numbers in common with certezza.com.
Name Servers
Five name servers handle delegation for certezza.com: ns1.certezza.net, ns2.certezza.net, a.ns.ip-only.net and two others.
certezza.com partially shares its NS delegation with several other domains, including 162.112.85.in-addr.arpa, karlskogael.se, 168.112.212.in-addr.arpa and two others.
In DNS configurations, these name servers often share authority with b.ns.ip-only.net, c.ns.ip-only.net, d.ns.ip-only.net and 7 other name servers.
Host names pointing to two IP addresses:
The A records for ns1.certezza.net return 82.99.51.131 and 2a01:2b0:3001:5207::11.
The A records for ns2.certezza.net return 82.99.51.132 and 2a01:2b0:3001:5207::12.
The A records for a.ns.ip-only.net return 212.112.160.42 and 2a01:2b0:1000:2::2.
The A records for b.ns.ip-only.net return 212.112.163.90 and 2a01:2b0:1000:4::2.
The A records for c.ns.ip-only.net return 83.145.7.217 and 2a01:2b0:2000:1c6::1.
Mail Servers
certezza.com uses two mail servers, mx1.certezza.net and mx2.certezza.net.
The mail server setup of certezza.com matches that of other domains such as certezza.net, fortezza.se, federera.se and two others.
mx1.certezza.net resolves to 82.99.51.5 and 2a01:2b0:3001:5202::5. Likewise, mx2.certezza.net resolves to 82.99.51.7 and 2a01:2b0:3001:5202::7 — two IP addresses apiece.