engineeringchallenges.org - dns.ninja
engineeringchallenges.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 72.32.23.51🇺🇸 RACKSPACE-DFW72.32.0.0/16 Rackspace, 5000 Walzem Road, San Antonio, TX 78218 | ||||||
| NS | ns.rackspace.com ⭐ | ||||||
| A | 69.20.95.4🇺🇸 RACKSPACE-DFW69.20.95.0/24 Rackspace, 5000 Walzem Road, San Antonio, TX 78218 | ||||||
| PTR | ns.rackspace.com | ||||||
| NS | dns1.stabletransit.com | ||||||
| A | 69.20.95.4🇺🇸 RACKSPACE-DFW69.20.95.0/24 Rackspace, 5000 Walzem Road, San Antonio, TX 78218 | ||||||
| PTR | ns.rackspace.com | ||||||
| NS | dns2.stabletransit.com | ||||||
| A | 65.61.188.4🇺🇸 RACKSPACE-LON65.61.188.0/24 Rackspace, 5000 Walzem Road, San Antonio, TX 78218 | ||||||
| PTR | ns2.rackspace.com | ||||||
| TXT | v=spf1 ip4:72.32.23.51 include:sendgrid.net -all | ||||||
| SOA | ns.rackspace.comsupport@diamax.com serial=1758182931 | ||||||
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=1783909835 | ||||||
rank #23295 in the tld
WOT: UNKNOWN (84/100)
Same first word
engineeringchallenges.org |
DNS History
10 records (4 active, 6 former)
○NSberkshire.nas.edu2015-05-28 → 2015-10-19 · 4 obs
● 2015-10-19 07:33:30
○ 2015-12-24 08:21:34
○ 2026-07-13 02:48:46
○NSbighorn.nas.edu2015-05-28 → 2015-10-19 · 4 obs
● 2015-10-19 07:33:30
○ 2015-12-24 08:21:34
○ 2026-07-13 02:48:46
○NSbighorn.nas.edu.org2015-05-28 → 2015-10-19 · 4 obs
● 2015-10-19 07:33:30
○ 2015-12-24 08:21:34
○ 2026-07-13 02:48:46
●NSdns1.stabletransit.com2015-12-24 → 2026-07-13 · 3 obs
● 2015-12-24 08:21:34
● 2026-07-13 02:48:46
●NSdns2.stabletransit.com2015-12-24 → 2026-07-13 · 3 obs
● 2015-12-24 08:21:34
● 2026-07-13 02:48:46
●NSns.rackspace.com2015-12-24 → 2026-07-13 · 6 obs
● 2015-12-24 08:21:34
● 2026-04-11 18:06:50
○ 2026-06-14 03:06:34
● 2026-06-26 11:28:00
● 2026-07-13 02:48:46
○NSrushmore.nas.edu2015-05-28 → 2015-05-28 · 3 obs
○ 2015-10-19 07:33:30
○ 2026-07-13 02:48:46
○A72.3.201.2462015-05-28 → 2015-10-19 · 4 obs
● 2015-10-19 07:33:30
○ 2015-12-24 08:21:34
○ 2026-07-13 02:48:46
○A72.3.201.2472015-12-24 → 2016-08-03 · 5 obs
● 2015-12-24 08:21:34
● 2016-08-03 06:10:18
○ 2026-02-21 10:09:04
○ 2026-07-13 02:48:46
●A72.32.23.512026-02-21 → 2026-07-13 · 6 obs
● 2026-02-21 10:09:04
● 2026-04-11 18:06:50
○ 2026-06-14 03:06:34
● 2026-06-26 11:28:00
● 2026-07-13 02:48:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| engineeringchallenges.org | dns2.stabletransit.com, dns1.stabletransit.com | - |
✅ Authoritative Response
Server:65.61.188.4
NS records: dns2.stabletransit.com, dns1.stabletransit.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for engineeringchallenges.org (unsigned zone)
⏱️ Timing
Total: 323ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 72.32.23.51 |
| NS | 2 | dns2.stabletransit.com, dns1.stabletransit.com |
| TXT | 1 | v=spf1 ip4:72.32.23.51 include:sendgrid. |
| SOA | 1 | ns.rackspace.com support.diamax.com |
Analysis
IP Addresses
engineeringchallenges.org has exactly one IP address — 72.32.23.51.
Additional host names — including www.greatachievements.org and greatachievements.org — share IP numbers with engineeringchallenges.org.
Name Servers
DNS for engineeringchallenges.org is handled by three authoritative name servers: ns.rackspace.com, dns1.stabletransit.com and dns2.stabletransit.com.
engineeringchallenges.org has at least partial name server overlap with other domains, such as bsgweb.com, westernruralhealthcare.co.uk, sb-am.com and two others.
It is common to find these name servers paired with the name servers ns2.rackspace.com, dns7.communigal.net, dns8.communigal.net and ns1.rackspace.com.
ns.rackspace.com and dns1.stabletransit.com both resolve to 69.20.95.4, while dns2.stabletransit.com resolves to 65.61.188.4; all three hostnames carry exactly one IP address.
Host names pointing to 69.20.95.4 IP addresses: ns.rackspace.com and dns1.stabletransit.com.