certifica.do - dns.ninja
certifica.do
| DNSSEC | ⚠️ Not signed | ||||||
| A | 191.234.181.9🇧🇷 Microsoft191.232.0.0/13 MICROSOFT | ||||||
| NS | ns-1941.awsdns-50.co.uk ⭐ | ||||||
| A | 2600:9000:5307:9500::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1941.awsdns-50.co.uk | ||||||
| A | 205.251.199.149🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1941.awsdns-50.co.uk | ||||||
| NS | ns-1035.awsdns-01.org | ||||||
| A | 2600:9000:5304:b00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1035.awsdns-01.org | ||||||
| A | 205.251.196.11🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1035.awsdns-01.org | ||||||
| NS | ns-399.awsdns-49.com | ||||||
| A | 2600:9000:5301:8f00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-399.awsdns-49.com | ||||||
| A | 205.251.193.143🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-399.awsdns-49.com | ||||||
| NS | ns-552.awsdns-05.net | ||||||
| A | 2600:9000:5302:2800::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-552.awsdns-05.net | ||||||
| A | 205.251.194.40🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-552.awsdns-05.net | ||||||
| MX | certifica.do.certifica.do ⭐ | ||||||
| TXT | ohhshk9m14bj2pq1bpq9gtu18r | ||||||
| TXT | v=spf1 ip4:191.234.181.9 ~all | ||||||
| SOA | ns-1941.awsdns-50.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
do
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns2.nic.do ⭐ | ||||||
| NS | a.lactld.org ⚠️ Not in parent delegation | ||||||
| NS | ns.nic.do | ||||||
| NS | ns1.nic.do | ||||||
| NS | ns4.nic.do | ||||||
| NS | ns5.nic.do | ||||||
| NS | phloem.uoregon.edu ⚠️ Not in parent delegation | ||||||
| TXT | Generation Time: 1782277209 | ||||||
| SOA | ns1.nic.dohostmaster@nic.do 2026-06-24 #5 | ||||||
MX for
Subdomains
do.certifica.do |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSns-1035.awsdns-01.org2026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
●NSns-1941.awsdns-50.co.uk2026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
●NSns-399.awsdns-49.com2026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
●NSns-552.awsdns-05.net2026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
●MXcertifica.do.certifica.do2026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
●A191.234.181.92026-03-24 → 2026-06-24 · 2 obs
● 2026-06-24 06:28:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| do | a.lactld.org, ns2.nic.do, ns5.nic.do, ns.nic.do... | 14 records |
| certifica.do | ns-552.awsdns-05.net, ns-1941.awsdns-50.co.uk, ns-399.awsdns-49.com, ns-1035.awsdns-01.org | - |
✅ Authoritative Response
Server:205.251.196.11
NS records: ns-552.awsdns-05.net, ns-1941.awsdns-50.co.uk, ns-399.awsdns-49.com, ns-1035.awsdns-01.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for do (unsigned zone)
⏱️ Timing
Total: 360ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 191.234.181.9 |
| NS | 4 | ns-1035.awsdns-01.org, ns-1941.awsdns-50.co.uk... |
| MX | 1 | certifica.do.certifica.do (pri: 10) |
| TXT | 2 | ohhshk9m14bj2pq1bpq9gtu18r, v=spf1 ip4:191.234.181.9 ~all |
| SOA | 1 | ns-1941.awsdns-50.co.uk awsdns-hostmaste |
📌 Glue Records Collected
Total: 14
In-bailiwick: 10 (ns.nic.do, ns1.nic.do, ns2.nic.do...)
Out-of-bailiwick: 4 (phloem.uoregon.edu, a.lactld.org, phloem.uoregon.edu...)
Analysis
Hierarchy
certifica.do serves as the parent of do.certifica.do.
Mail Server Role
Mail for barceloscia.com.br is routed through the mail server certifica.do.
As mail servers, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com are often used in combination with certifica.do.
IP Addresses
certifica.do has exactly one IP address — 191.234.181.9.
Name Servers
Four name servers handle the delegation for certifica.do: ns-399.awsdns-49.com, ns-552.awsdns-05.net, ns-1035.awsdns-01.org and ns-1941.awsdns-50.co.uk.
certifica.do has at least partial name server overlap with other domains, such as monitorweb.co.uk, medgelabs.io, mynwu.info and two others.
These name servers tend to appear together with the name servers ns-684.awsdns-21.net, ns-233.awsdns-29.com and ns-1069.awsdns-05.org.
ns-399.awsdns-49.com, ns-552.awsdns-05.net, ns-1035.awsdns-01.org and ns-1941.awsdns-50.co.uk all point to exactly two IP numbers each: ns-399.awsdns-49.com → 205.251.193.143 and 2600:9000:5301:8f00::1; ns-552.awsdns-05.net → 205.251.194.40 and 2600:9000:5302:2800::1; ns-1035.awsdns-01.org → 205.251.196.11 and 2600:9000:5304:b00::1; ns-1941.awsdns-50.co.uk → 205.251.199.149 and 2600:9000:5307:9500::1.
Mail Servers
certifica.do uses one mail server — certifica.do.certifica.do.