rtcb.org - dns.ninja
rtcb.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 213.186.33.5🇫🇷 OVH213.186.32.0/19 ISP Paris, France | ||||||
| PTR | redirect.ovh.net | ||||||
| NS | dns20.ovh.net ⭐ | ||||||
| A | 2001:41d0:d00:f900::2🇫🇷 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | dns20.ovh.net | ||||||
| A | 5.135.249.213🇫🇷 OVH5.135.0.0/16 | ||||||
| PTR | dns20.ovh.net | ||||||
| NS | ns20.ovh.net | ||||||
| A | 2001:41d0:b00:f300::2🇫🇷 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | ns20.ovh.net | ||||||
| A | 5.135.43.97🇧🇪 OVH5.135.0.0/16 | ||||||
| PTR | ns20.ovh.net | ||||||
| MX | mx3.ovh.net ⭐ | ||||||
| A | 91.121.56.64🇫🇷 OVH91.121.0.0/16 ISP Paris, France | ||||||
| PTR | mx3.ovh.net | ||||||
| MX | mx4.ovh.net(5) | ||||||
| A | 178.32.105.189🇫🇷 OVH178.32.0.0/15 ISP Paris, France | ||||||
| PTR | mx4.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 | 4|https://www.cathobel.be | ||||||
| TXT | v=spf1 include:mx.ovh.com ~all | ||||||
| SOA | dns20.ovh.nettech@ovh.net 2021-02-16 #2 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1783666854 | ||||||
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●A213.186.33.52015-06-18 → 2026-07-10 · 5 obs
○ 2015-11-30 13:51:26
○ 2016-12-09 14:48:32
● 2026-02-27 18:39:06
● 2026-07-10 07:16:26
○A46.105.236.2262015-11-30 → 2016-12-09 · 5 obs
● 2015-11-30 13:51:26
● 2016-12-09 14:48:32
○ 2026-02-27 18:39:06
○ 2026-07-10 07:16:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| rtcb.org | ns20.ovh.net, dns20.ovh.net | - |
✅ Authoritative Response
Server:5.135.43.97
NS records: ns20.ovh.net, dns20.ovh.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtcb.org (unsigned zone)
⏱️ Timing
Total: 1559ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.186.33.5 |
| NS | 2 | ns20.ovh.net, dns20.ovh.net |
| MX | 3 | mx3.ovh.net (pri: 1), mxb.ovh.net (pri: 100)... |
| TXT | 2 | 4|https://www.cathobel.be, v=spf1 include:mx.ovh.com ~all |
| SOA | 1 | dns20.ovh.net tech.ovh.net |
Analysis
IP Addresses
rtcb.org resolves to one IP address: 213.186.33.5.
reeducation-orthophonie.com, www.motoxmoto.com, lazzars.fr and two other host names share IP numbers with rtcb.org.
Name Servers
rtcb.org has two authoritative name servers — dns20.ovh.net and ns20.ovh.net.
rtcb.org uses the same name servers as several other domains — among them mazette-factory.fr, munic.fr, coachformation84.fr and two more.
The name servers for rtcb.org overlap at least partially with those of other domains — for example inkcenter.be.
Both dns20.ovh.net and ns20.ovh.net have two IP addresses each. dns20.ovh.net resolves to 5.135.249.213 and 2001:41d0:d00:f900::2; ns20.ovh.net resolves to 5.135.43.97 and 2001:41d0:b00:f300::2.
Mail Servers
rtcb.org has three mail servers: mx3.ovh.net, mx4.ovh.net and mxb.ovh.net.
rtcb.org has at least partial mail server overlap with other domains such as viasema.com, favorita.fr, technibel.info and two more.
These mail servers tend to be used in combination with the mail servers mx2.ovh.net and mx1.ovh.net.
Each of the three hostnames points to exactly one IP address: mx3.ovh.net points to 91.121.56.64, mx4.ovh.net points to 178.32.105.189 and mxb.ovh.net points to 46.105.45.21.