optical-calculation.com - dns.ninja
optical-calculation.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.210.219.78🇫🇷 OVH51.210.0.0/16 | ||||||
| PTR | ns31312307.ip-51-210-219.eu | ||||||
| NS | dns17.ovh.net ⭐ | ||||||
| A | 2001:41d0:d00:f600::2🇫🇷 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | dns17.ovh.net | ||||||
| A | 5.135.112.105🇫🇷 OVH5.135.0.0/16 | ||||||
| PTR | dns17.ovh.net | ||||||
| NS | ns17.ovh.net | ||||||
| A | 2001:41d0:b00:f000::2🇫🇷 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | ns17.ovh.net | ||||||
| A | 5.39.116.57🇫🇷 OVH5.39.0.0/17 ISP Paris, France | ||||||
| PTR | ns17.ovh.net | ||||||
| MX | mx1.ovh.net ⭐ | ||||||
| A | 188.165.47.122🇫🇷 OVH188.165.0.0/16 ISP Paris, France | ||||||
| PTR | mx1.ovh.net | ||||||
| MX | mx2.ovh.net(5) | ||||||
| A | 87.98.132.45🇫🇷 OVH87.98.128.0/17 ISP Paris, France | ||||||
| PTR | mx2.ovh.net | ||||||
| MX | mxb.ovh.net(100) | ||||||
| A | 46.105.45.21🇫🇷 OVH46.105.0.0/16 ISP Paris, France | ||||||
| PTR | mxb.ovh.net | ||||||
| TXT | v=spf1 ip4:51.210.219.78 include:mx.ovh.com include:spf.sendinblue.com ~all | ||||||
| TXT | Sendinblue-code:722443dde5c64694c9707f353f3bb15c | ||||||
| SOA | dns17.ovh.nettech@ovh.net 2024-07-18 #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=1786119014 | ||||||
Same first word
optical-calculation.com |
DNS History
7 records (6 active, 1 former)
○A213.186.33.162015-05-12 → 2017-05-29 · 4 obs
● 2017-05-29 09:38:12
○ 2026-07-20 13:49:44
○ 2026-08-07 16:41:26
●A51.210.219.782026-07-20 → 2026-08-07 · 3 obs
● 2026-07-20 13:49:44
● 2026-08-07 16:41:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net... | - |
| optical-calculation.com | dns17.ovh.net, ns17.ovh.net | - |
✅ Authoritative Response
Server:5.39.116.57
NS records: dns17.ovh.net, ns17.ovh.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optical-calculation.com (unsigned zone)
⏱️ Timing
Total: 583ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.210.219.78 |
| NS | 2 | ns17.ovh.net, dns17.ovh.net |
| MX | 3 | mxb.ovh.net (pri: 100), mx1.ovh.net (pri: 1)... |
| TXT | 2 | v=spf1 ip4:51.210.219.78 include:mx.ovh., Sendinblue-code:722443dde5c64694c9707f35 |
| SOA | 1 | dns17.ovh.net tech.ovh.net |
Analysis
IP Addresses
optical-calculation.com directs to one IP number, which is 51.210.219.78.
Name Servers
Two name servers handle the delegation for optical-calculation.com: dns17.ovh.net and ns17.ovh.net.
optical-calculation.com has the same name server delegation as a number of other domains, such as gramin.info, ninkasi.fr, seriouspoulpgames.com and two more.
dns17.ovh.net and ns17.ovh.net both carry two IP addresses. The A records for dns17.ovh.net are 5.135.112.105 and 2001:41d0:d00:f600::2; the A records for ns17.ovh.net are 5.39.116.57 and 2001:41d0:b00:f000::2.
Mail Servers
optical-calculation.com is handled by three mail servers: mx1.ovh.net, mx2.ovh.net and mxb.ovh.net.
optical-calculation.com shares at least some of its mail servers with other domains — for example ampimmo.com, dokraphael.com, clinique-dentaire-bellecour.com and two more.
These mail servers frequently appear alongside the mail servers mx4.ovh.net and mx3.ovh.net.
mx1.ovh.net points to 188.165.47.122; mx2.ovh.net points to 87.98.132.45; mxb.ovh.net points to 46.105.45.21 — each hostname maps to exactly one IP address.