rtcb.io - dns.ninja
rtcb.io
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1114.awsdns-11.org ⭐ | ||||||
| A | 2600:9000:5304:5a00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1114.awsdns-11.org | ||||||
| A | 205.251.196.90🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| NS | ns-2001.awsdns-58.co.uk | ||||||
| A | 2600:9000:5307:d100::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-2001.awsdns-58.co.uk | ||||||
| A | 205.251.199.209🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-2001.awsdns-58.co.uk | ||||||
| NS | ns-347.awsdns-43.com | ||||||
| A | 2600:9000:5301:5b00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-347.awsdns-43.com | ||||||
| A | 205.251.193.91🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-347.awsdns-43.com | ||||||
| NS | ns-650.awsdns-17.net | ||||||
| A | 2600:9000:5302:8a00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-650.awsdns-17.net | ||||||
| A | 205.251.194.138🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-650.awsdns-17.net | ||||||
| TXT | v=spf1 include:spf.mandrillapp.com ?all | ||||||
| SOA | ns-1114.awsdns-11.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1784691573 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSns-1114.awsdns-11.org2017-12-03 → 2026-07-22 · 2 obs
● 2026-07-22 04:25:08
●NSns-2001.awsdns-58.co.uk2017-12-03 → 2026-07-22 · 2 obs
● 2026-07-22 04:25:08
●NSns-347.awsdns-43.com2017-12-03 → 2026-07-22 · 2 obs
● 2026-07-22 04:25:08
●NSns-650.awsdns-17.net2017-12-03 → 2026-07-22 · 2 obs
● 2026-07-22 04:25:08
○A8.19.33.1172017-12-03 → 2017-12-03 · 3 obs
○ 2026-03-27 02:13:36
○ 2026-07-22 04:25:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io | - |
| rtcb.io | ns-347.awsdns-43.com, ns-650.awsdns-17.net, ns-1114.awsdns-11.org, ns-2001.awsdns-58.co.uk | - |
✅ Authoritative Response
Server:205.251.193.91
NS records: ns-347.awsdns-43.com, ns-650.awsdns-17.net, ns-1114.awsdns-11.org, ns-2001.awsdns-58.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtcb.io (unsigned zone)
⏱️ Timing
Total: 434ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1114.awsdns-11.org, ns-2001.awsdns-58.co.uk... |
| TXT | 1 | v=spf1 include:spf.mandrillapp.com ?all |
| SOA | 1 | ns-1114.awsdns-11.org awsdns-hostmaster. |
Analysis
Name Servers
The authoritative name servers for rtcb.io are ns-347.awsdns-43.com, ns-650.awsdns-17.net, ns-1114.awsdns-11.org and ns-2001.awsdns-58.co.uk.
rtcb.io shares at least some of its name servers with other domains, including yardamigo.com, callpop.com, domchan.com and two others.
These name servers are frequently paired with the name servers ns-407.awsdns-50.com, ns-866.awsdns-44.net and ns-1281.awsdns-32.org.
The host names ns-347.awsdns-43.com, ns-650.awsdns-17.net, ns-1114.awsdns-11.org and ns-2001.awsdns-58.co.uk each resolve to two IP addresses: ns-347.awsdns-43.com resolves to 205.251.193.91 and 2600:9000:5301:5b00::1; ns-650.awsdns-17.net resolves to 205.251.194.138 and 2600:9000:5302:8a00::1; ns-1114.awsdns-11.org resolves to 205.251.196.90 and 2600:9000:5304:5a00::1; ns-2001.awsdns-58.co.uk resolves to 205.251.199.209 and 2600:9000:5307:d100::1.