ructf.org - dns.ninja
ructf.org
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=1784241294 | ||||||
Subdomains
www.ructf.org |
Same first word
Similar names
DNS History
15 records (11 active, 4 former)
○NSns.urgu.org2015-08-31 → 2018-02-19 · 4 obs
● 2018-02-19 12:57:24
○ 2026-03-28 22:29:30
○ 2026-07-16 22:52:04
○NSns.usaaa.ru2015-08-31 → 2018-02-19 · 4 obs
● 2018-02-19 12:57:24
○ 2026-03-28 22:29:30
○ 2026-07-16 22:52:04
●NSns0.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:30
● 2026-07-16 22:52:04
●NSns1.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:30
● 2026-07-16 22:52:04
●NSns2.ructf.com2026-03-28 → 2026-07-16 · 3 obs
● 2026-03-28 22:29:30
● 2026-07-16 22:52:04
●MXalt1.aspmx.l.google.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXalt2.aspmx.l.google.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXaspmx.l.google.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXaspmx2.googlemail.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXaspmx3.googlemail.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXaspmx4.googlemail.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
●MXaspmx5.googlemail.com2015-08-31 → 2026-07-16 · 5 obs
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
○A194.226.244.1262015-08-31 → 2016-12-25 · 4 obs
● 2016-12-25 02:19:50
○ 2018-02-19 12:57:24
○ 2026-07-16 22:52:04
●A212.193.68.2492026-03-28 → 2026-07-16 · 6 obs
● 2026-03-28 22:29:30
● 2026-05-04 22:36:40
○ 2026-06-28 13:55:16
● 2026-07-16 19:55:04
● 2026-07-16 22:52:04
○A212.193.68.2542018-02-19 → 2018-02-19 · 4 obs
● 2018-02-19 12:57:24
○ 2026-03-28 22:29:30
○ 2026-07-16 22:52:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| ructf.org | ns1.ructf.com, ns0.ructf.com, ns2.ructf.com | - |
✅ Authoritative Response
Server:178.154.240.171
NS records: ns1.ructf.com, ns0.ructf.com, ns2.ructf.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ructf.org (unsigned zone)
⏱️ Timing
Total: 2618ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.193.68.249 |
| NS | 3 | ns2.ructf.com, ns1.ructf.com... |
| MX | 7 | ALT1.ASPMX.L.GOOGLE.COM (pri: 5), ALT2.ASPMX.L.GOOGLE.COM (pri: 5)... |
| TXT | 1 | v=spf1 a include:_spf.google.com ip4:37. |
| SOA | 1 | ns0.ructf.com znick.hackerdom.ru |
Analysis
Hierarchy
The domain www.ructf.org falls under the parent ructf.org.
IP Addresses
ructf.org directs to one IP number, which is 212.193.68.249.
Other host names, among them ructf.com and ructfe.org, have IP numbers in common with ructf.org.
Name Servers
ructf.org has three name servers — ns0.ructf.com, ns1.ructf.com and ns2.ructf.com.
ructf.org shares at least some of its name servers with other domains, for example ructf.com, urgu.org, hackerdom.ru and ructfe.org.
These name servers tend to be deployed in combination with the name servers ns3.ructf.com and 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.org uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.
ructf.org shares at least some of its mail servers with other domains — for example schrage.com.br, dancemechanics.com, tomeagar.net and two more.
It is common to find these mail servers paired with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 more.
Hosts with two IP numbers each:
aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.
aspmx3.googlemail.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.
aspmx4.googlemail.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.
aspmx5.googlemail.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.
aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1a.
alt1.aspmx.l.google.com resolves to 142.250.102.26 and 2a00:1450:4025:402::1b.
alt2.aspmx.l.google.com resolves to 192.178.213.27 and 2a00:1450:4013:c1e::1a.
The host names aspmx4.googlemail.com and aspmx.l.google.com both resolve to 192.178.223.26 IP addresses.