codecourse.net - robtex.com
codecourse.net
net
| 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=1780271504 | ||||||
Same first word
codecourse.com |
codecourse.net |
codecourse.org |
Similar names
DNS History
16 records (9 active, 7 former)
●NSdns1.p01.nsone.net2026-03-26 → 2026-06-01 · 3 obs
● 2026-03-26 05:53:12
● 2026-06-01 00:12:42
○NSdns1.registrar-servers.com2021-10-30 → 2021-10-30 · 4 obs
● 2021-10-30 12:47:48
○ 2026-03-26 05:53:12
○ 2026-06-01 00:12:42
●NSdns2.p01.nsone.net2026-03-26 → 2026-06-01 · 3 obs
● 2026-03-26 05:53:12
● 2026-06-01 00:12:42
○NSdns2.registrar-servers.com2021-10-30 → 2021-10-30 · 4 obs
● 2021-10-30 12:47:48
○ 2026-03-26 05:53:12
○ 2026-06-01 00:12:42
●NSdns3.p01.nsone.net2026-03-26 → 2026-06-01 · 3 obs
● 2026-03-26 05:53:12
● 2026-06-01 00:12:42
●NSdns4.p01.nsone.net2026-03-26 → 2026-06-01 · 3 obs
● 2026-03-26 05:53:12
● 2026-06-01 00:12:42
○NSns-1000.awsdns-61.net2017-01-03 → 2018-06-17 · 4 obs
● 2018-06-17 16:01:54
○ 2021-10-30 12:47:48
○ 2026-06-01 00:12:42
○NSns-1383.awsdns-44.org2017-01-03 → 2018-06-17 · 4 obs
● 2018-06-17 16:01:54
○ 2021-10-30 12:47:48
○ 2026-06-01 00:12:42
○NSns-1596.awsdns-07.co.uk2017-01-03 → 2018-06-17 · 4 obs
● 2018-06-17 16:01:54
○ 2021-10-30 12:47:48
○ 2026-06-01 00:12:42
○NSns-308.awsdns-38.com2017-01-03 → 2018-06-17 · 4 obs
● 2018-06-17 16:01:54
○ 2021-10-30 12:47:48
○ 2026-06-01 00:12:42
●MXalt1.aspmx.l.google.com2017-01-03 → 2026-06-01 · 2 obs
● 2026-06-01 00:12:42
●MXalt2.aspmx.l.google.com2017-01-03 → 2026-06-01 · 2 obs
● 2026-06-01 00:12:42
●MXalt3.aspmx.l.google.com2017-01-03 → 2026-06-01 · 2 obs
● 2026-06-01 00:12:42
●MXalt4.aspmx.l.google.com2017-01-03 → 2026-06-01 · 2 obs
● 2026-06-01 00:12:42
●MXaspmx.l.google.com2017-01-03 → 2026-06-01 · 2 obs
● 2026-06-01 00:12:42
○A52.201.28.1832017-01-03 → 2018-06-17 · 4 obs
● 2018-06-17 16:01:54
○ 2021-10-30 12:47:48
○ 2026-06-01 00:12:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | c.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net... | - |
| codecourse.net | dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net | 8 records |
✅ Authoritative Response
Server:198.51.44.65
NS records: dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns4.p01.nsone.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for codecourse.net (unsigned zone)
⏱️ Timing
Total: 322ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | dns1.p01.nsone.net, dns2.p01.nsone.net... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 1 | v=spf1 include:_spf.google.com ~all |
| SOA | 1 | dns1.p01.nsone.net hostmaster.nsone.net |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (dns1.p01.nsone.net, dns1.p01.nsone.net, dns2.p01.nsone.net...)
Analysis
Name Servers
codecourse.net delegates DNS authority to 4 name servers — dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.
codecourse.net partially shares its NS delegation with several other domains, including softsolutions.co.in, wesleyjackson.org, izynga.com and two others.
These name servers co-occur with ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com and seven other name servers on a regular basis.
dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net each carry two IP addresses. dns1.p01.nsone.net has 198.51.44.1 and 2620:4d:4000:6259:7:1:0:1; dns2.p01.nsone.net has 198.51.45.1 and 2a00:edc0:6259:7:1::2; dns3.p01.nsone.net has 198.51.44.65 and 2620:4d:4000:6259:7:1:0:3; dns4.p01.nsone.net has 198.51.45.65 and 2a00:edc0:6259:7:1::4.
Mail Servers
The MX records for codecourse.net point to 5 mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
There is at least a partial MX overlap between codecourse.net and other domains, including ns500754.ns500731.ns500731.ns500742.ns500671.ns500671.ns500678.ns500678.ns500671.ns500678.ns500666.ns500153.tenderladiesbz.com, ns500758.ns500758.ns500759.ns500759.ns500698.ns500698.ns500698.ns500735.ns500698.ns500698.ns500698.ns500619.ns500698.ns500576.ns500619.ns500576.trackreceptor.com, jfoto.org and two others.
alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.
Host names that have two IP addresses:
aspmx.l.google.com resolves to 172.253.62.26 and 2607:f8b0:4004:c1d::1a.
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::1b.
alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com resolves to 173.194.76.26 and 2a00:1450:400c:c00::1b.