codeforce.org - dns.ninja
codeforce.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns1.afternic.com ⭐ | ||||||
| A | 2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.afternic.com | ||||||
| A | 97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.afternic.com | ||||||
| NS | ns2.afternic.com | ||||||
| A | 2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.afternic.com | ||||||
| A | 173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.afternic.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.afternic.comdns@jomax.net serial=1 | ||||||
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=1785947106 | ||||||
Previously MX for
codeforce.org |
Subdomains
www.codeforce.org |
Same first word
codeforce.nl |
codeforce.eu |
codeforce.net |
codeforce.org |
codeforce.de |
codeforce.com |
codeforce.com.br |
codeforce.co.nz |
Similar names
DNS History
8 records (4 active, 4 former)
○NSdns.presenceweb.org2015-06-10 → 2017-05-14 · 4 obs
● 2017-05-14 16:11:16
○ 2026-03-31 06:06:20
○ 2026-08-05 16:51:16
○NSdns2.presenceweb.org2015-06-10 → 2017-05-14 · 4 obs
● 2017-05-14 16:11:16
○ 2026-03-31 06:06:20
○ 2026-08-05 16:51:16
●NSns1.afternic.com2026-03-31 → 2026-08-05 · 3 obs
● 2026-03-31 06:06:20
● 2026-08-05 16:51:16
●NSns2.afternic.com2026-03-31 → 2026-08-05 · 3 obs
● 2026-03-31 06:06:20
● 2026-08-05 16:51:16
○MXcodeforce.org2015-06-10 → 2017-05-14 · 4 obs
● 2017-05-14 16:11:16
○ 2026-03-31 06:06:20
○ 2026-08-05 16:51:16
●A13.248.169.482026-03-31 → 2026-08-05 · 3 obs
● 2026-03-31 06:06:20
● 2026-08-05 16:51:16
○A67.222.106.462015-06-10 → 2017-05-14 · 4 obs
● 2017-05-14 16:11:16
○ 2026-03-31 06:06:20
○ 2026-08-05 16:51:16
●A76.223.54.1462026-03-31 → 2026-08-05 · 3 obs
● 2026-03-31 06:06:20
● 2026-08-05 16:51:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| codeforce.org | ns1.afternic.com, ns2.afternic.com | - |
✅ Authoritative Response
Server:173.201.66.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for codeforce.org (unsigned zone)
⏱️ Timing
Total: 256ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns2.afternic.com dns.jomax.net |
Analysis
Hierarchy
codeforce.org is the parent zone for www.codeforce.org.
IP Addresses
codeforce.org resolves to the IP addresses 13.248.169.48 and 76.223.54.146
Among the host names that share IP numbers with codeforce.org are erestu.com, habitinstitute.com, swplumbers.com and two others.
Name Servers
codeforce.org uses two name servers for its delegation: ns1.afternic.com and ns2.afternic.com.
codeforce.org has the same name server delegation as a number of other domains, such as briart.com, host-203-133-126-94.ip.kbtelecom.net, www.888469.com and two more.
codeforce.org partially shares its NS delegation with several other domains, including spinnot.com, irzf.com, northsiderestoration.com and two others.
The name servers verification-ag3xtxqjhqhiyarqdrht2l.ns101.verify.hn, verification-myjkgnkaqgslzx3frmb7sy.ns101.verify.hn, verification-qxu9bfdaih4cxurbbn3f4d.ns101.verify.hn and verification-iryqusbri9xlks4ssi7d4w.ns101.verify.hn are often found in use alongside these name servers.
The two host names ns1.afternic.com and ns2.afternic.com each have a pair of IP addresses: ns1.afternic.com has 97.74.98.69 and 2603:5:2126::45, and ns2.afternic.com has 173.201.66.69 and 2603:5:2226::45.