ructf.com - dns.ninja
ructf.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=1784224347 | ||||||
Subdomains
Same first word
Similar names
DNS History
14 records (11 active, 3 former)
○NSns.urgu.org2015-08-31 → 2017-01-16 · 4 obs
● 2017-01-16 14:10:20
○ 2026-03-28 22:29:28
○ 2026-07-16 18:14:56
○NSns.usaaa.ru2015-08-31 → 2017-01-16 · 4 obs
● 2017-01-16 14:10:20
○ 2026-03-28 22:29:28
○ 2026-07-16 18:14:56
●NSns0.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:28
● 2026-07-16 18:14:56
●NSns1.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:28
● 2026-07-16 18:14:56
●NSns2.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:28
● 2026-07-16 18:14:56
●MXalt1.aspmx.l.google.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXalt2.aspmx.l.google.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXaspmx.l.google.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXaspmx2.googlemail.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXaspmx3.googlemail.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXaspmx4.googlemail.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
●MXaspmx5.googlemail.com2015-08-31 → 2026-07-16 · 2 obs
● 2026-07-16 18:14:56
○A194.226.244.1262015-08-31 → 2017-01-16 · 4 obs
● 2017-01-16 14:10:20
○ 2026-03-28 22:29:28
○ 2026-07-16 18:14:56
●A212.193.68.2492026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:28
● 2026-07-16 18:14:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net... | - |
| ructf.com | ns2.ructf.com, ns1.ructf.com, ns0.ructf.com | 3 records |
✅ Authoritative Response
Server:158.160.155.31
NS records: ns2.ructf.com, ns1.ructf.com, ns0.ructf.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ructf.com (unsigned zone)
⏱️ Timing
Total: 466ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.193.68.249 |
| NS | 3 | ns1.ructf.com, ns2.ructf.com... |
| MX | 7 | ALT1.ASPMX.L.GOOGLE.COM (pri: 5), ASPMX3.GOOGLEMAIL.COM (pri: 10)... |
| SOA | 1 | ns0.ructf.com znick.hackerdom.ru |
📌 Glue Records Collected
Total: 3
In-bailiwick: 3 (ns2.ructf.com, ns1.ructf.com, ns0.ructf.com)
Analysis
Hierarchy
ns1.ructf.com, ns2.ructf.com, ns0.ructf.com and ns3.ructf.com are all subdomains of ructf.com.
IP Addresses
ructf.com resolves to one IP address: 212.193.68.249.
ructfe.org is an example of another host name that shares IP numbers with ructf.com.
Name Servers
ructf.com has three name servers — ns0.ructf.com, ns1.ructf.com and ns2.ructf.com.
ructf.com has overlapping name servers with several other domains — among them ructf.org, urgu.org, hackerdom.ru and ructfe.org.
These name servers commonly appear in combination with the name servers ns.urgu.org.
Each of the three hostnames points to exactly one IP address: ns0.ructf.com points to 158.160.155.31, ns1.ructf.com points to 89.169.190.161 and ns2.ructf.com points to 178.154.240.171.
Mail Servers
ructf.com has 7 mail servers — aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com plus 4 other.
ructf.com has at least partial mail server overlap with other domains such as schneevonmorgen.com, gealex.ru, gyromotics.com and two more.
These mail servers commonly co-occur with mail servers alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, aspmx.l.google.com and 3 others.
Hostnames that resolve to two IP addresses:
aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.
aspmx4.googlemail.com resolves to 192.178.223.27 and 2a00:1450:4009:c0f::1b.
aspmx5.googlemail.com resolves to 172.253.157.27 and 2a00:1450:400c:c23::1a.
aspmx.l.google.com resolves to 192.178.218.26 and 2607:f8b0:4004:c23::1b.
alt1.aspmx.l.google.com resolves to 108.177.123.26 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.
The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 2800:3f0:4003:c0f::1b IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 2a00:1450:400b:c02::1a IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 172.253.116.27 IP addresses.