upcourse.com - dns.ninja
upcourse.com
| 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 | 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 | ||||||
| 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 | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
com
| 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=1783243326 | ||||||
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
●NSns1.afternic.com2026-04-07 → 2026-07-05 · 3 obs
● 2026-04-07 09:07:50
● 2026-07-05 09:52:30
●NSns2.afternic.com2026-04-07 → 2026-07-05 · 3 obs
● 2026-04-07 09:07:50
● 2026-07-05 09:52:30
○NSns47.domaincontrol.com2017-05-17 → 2017-05-17 · 3 obs
○ 2026-04-07 09:07:50
○ 2026-07-05 09:52:30
○NSns48.domaincontrol.com2017-05-17 → 2017-05-17 · 3 obs
○ 2026-04-07 09:07:50
○ 2026-07-05 09:52:30
○MX.2026-04-07 → 2026-07-05 · 2 obs
○ 2026-07-05 09:52:30
○MXmailstore1.secureserver.net2017-05-17 → 2017-05-17 · 3 obs
○ 2026-04-07 09:07:50
○ 2026-07-05 09:52:30
○MXsmtp.secureserver.net2017-05-17 → 2017-05-17 · 3 obs
○ 2026-04-07 09:07:50
○ 2026-07-05 09:52:30
●A13.248.169.482026-04-07 → 2026-07-05 · 3 obs
● 2026-04-07 09:07:50
● 2026-07-05 09:52:30
○A50.63.202.12017-05-17 → 2017-05-17 · 4 obs
● 2017-05-17 05:25:26
○ 2017-06-27 07:34:04
○ 2026-07-05 09:52:30
○A54.183.99.632015-08-18 → 2017-09-13 · 7 obs
● 2016-11-23 06:55:10
○ 2017-05-17 05:25:26
● 2017-06-27 07:34:04
● 2017-09-13 23:14:16
○ 2026-04-07 09:07:50
○ 2026-07-05 09:52:30
●A76.223.54.1462026-04-07 → 2026-07-05 · 3 obs
● 2026-04-07 09:07:50
● 2026-07-05 09:52:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| upcourse.com | ns1.afternic.com, ns2.afternic.com | 4 records |
✅ Authoritative Response
Server:97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for upcourse.com (unsigned zone)
⏱️ Timing
Total: 224ms | 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 | ns1.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.afternic.com, ns1.afternic.com, ns2.afternic.com...)
Analysis
IP Addresses
upcourse.com resolves to the IP addresses 13.248.169.48 and 76.223.54.146
Among the host names that share IP numbers with upcourse.com are www.36.shuonu.com, txlg.com, upperposition.com and two others.
Name Servers
upcourse.com has two authoritative name servers — ns1.afternic.com and ns2.afternic.com.
upcourse.com has the same name server delegation as a number of other domains, such as avenfor.com, greenerlaw.com, giantfireworks.com and two more.
upcourse.com has at least partial name server overlap with other domains, such as mailfox.org, funnymerchandise.com, compoundinginterests.com and two others.
These name servers tend to appear together with the name servers verification-m3erh32ujyoastvophjvuz.ns101.verify.hn, verification-d3jclucsp89ganyqbydeny.ns101.verify.hn and verification-ag3xtxqjhqhiyarqdrht2l.ns101.verify.hn.
Both ns1.afternic.com and ns2.afternic.com have two IP addresses each. ns1.afternic.com resolves to 97.74.98.69 and 2603:5:2126::45; ns2.afternic.com resolves to 173.201.66.69 and 2603:5:2226::45.