teachingopensource.net - dns.ninja
teachingopensource.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.211.9.53🇺🇸 LINK-OREGON140.211.0.0/16 University of Oregon | ||||||
| PTR | vip-lb1.osuosl.org | ||||||
| NS | ns1.auth.osuosl.org ⭐ | ||||||
| A | 2605:bc80:3010::140🇺🇸 LINK-OREGON2605:bc80::/32 University of Oregon | ||||||
| PTR | ns1.auth.osuosl.org | ||||||
| A | 140.211.166.140🇺🇸 LINK-OREGON140.211.0.0/16 University of Oregon | ||||||
| PTR | ns1.auth.osuosl.org | ||||||
| NS | ns2.auth.osuosl.org | ||||||
| A | 2605:bc80:3010::141🇺🇸 LINK-OREGON2605:bc80::/32 University of Oregon | ||||||
| PTR | ns2.auth.osuosl.org | ||||||
| A | 140.211.166.141🇺🇸 LINK-OREGON140.211.0.0/16 University of Oregon | ||||||
| PTR | ns2.auth.osuosl.org | ||||||
| NS | ns3.auth.osuosl.org | ||||||
| A | 2600:3402:600:24::153🇺🇸 TDS-AS2600:3400::/28 TDS Telecom route object | ||||||
| PTR | ns3.auth.osuosl.org | ||||||
| A | 216.165.191.53🇺🇸 TDS-AS216.165.128.0/18 TDS Telecom | ||||||
| PTR | ns3.auth.osuosl.org | ||||||
| SOA | ns1.auth.osuosl.orghostmaster@osuosl.org 2023-03-17 #0 | ||||||
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=1786560249 | ||||||
Same first word
teachingopensource.com |
teachingopensource.net |
teachingopensource.org |
DNS History
7 records (4 active, 3 former)
●NSns1.auth.osuosl.org2015-07-25 → 2026-08-12 · 2 obs
● 2026-08-12 18:59:04
●NSns2.auth.osuosl.org2015-07-25 → 2026-08-12 · 2 obs
● 2026-08-12 18:59:04
●NSns3.auth.osuosl.org2015-07-25 → 2026-08-12 · 2 obs
● 2026-08-12 18:59:04
○MXmail.teachingopensource.org2015-07-25 → 2026-02-17 · 4 obs
● 2026-02-17 08:32:30
○ 2026-02-18 15:31:10
○ 2026-08-12 18:59:04
○A140.211.15.902015-07-25 → 2016-07-14 · 4 obs
● 2016-07-14 19:39:36
○ 2017-04-19 07:54:06
○ 2026-08-12 18:59:04
○A140.211.9.502017-04-19 → 2017-04-19 · 4 obs
● 2017-04-19 07:54:06
○ 2026-02-17 08:32:30
○ 2026-08-12 18:59:04
●A140.211.9.532026-02-17 → 2026-08-12 · 3 obs
● 2026-02-17 08:32:30
● 2026-08-12 18:59:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| teachingopensource.net | ns1.auth.osuosl.org, ns2.auth.osuosl.org, ns3.auth.osuosl.org | - |
✅ Authoritative Response
Server:140.211.166.140
NS records: ns1.auth.osuosl.org, ns2.auth.osuosl.org, ns3.auth.osuosl.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for teachingopensource.net (unsigned zone)
⏱️ Timing
Total: 415ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 140.211.9.53 |
| NS | 3 | ns1.auth.osuosl.org, ns3.auth.osuosl.org... |
| SOA | 1 | ns1.auth.osuosl.org hostmaster.osuosl.or |
Analysis
IP Addresses
teachingopensource.net resolves to one IP address: 140.211.9.53.
www.teachingopensource.org, mail.openvswitch.org, openzfs.org and two other host names share IP numbers with teachingopensource.net.
Name Servers
teachingopensource.net carries NS records delegating to ns1.auth.osuosl.org, ns2.auth.osuosl.org and ns3.auth.osuosl.org.
At least some of teachingopensource.net's name servers are shared with other domains, for example crosstool-ng.org, linuxplumbersconf.org, linuxlookup.com and two more.
ns1.auth.osuosl.org, ns2.auth.osuosl.org and ns3.auth.osuosl.org are three hostnames that each resolve to a pair of IP addresses: ns1.auth.osuosl.org to 140.211.166.140 and 2605:bc80:3010::140, ns2.auth.osuosl.org to 140.211.166.141 and 2605:bc80:3010::141, and ns3.auth.osuosl.org to 216.165.191.53 and 2600:3402:600:24::153.