coursera.site - robtex.com
coursera.site
| 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 | ||||||
site
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1778405350 | ||||||
Same first word
Similar names
DNS History
9 records (4 active, 5 former)
○NSlaunch1.spaceship.net2026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 18:33:22
○ 2026-05-06 04:24:46
○ 2026-05-10 10:08:14
○NSlaunch2.spaceship.net2026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 18:33:22
○ 2026-05-06 04:24:46
○ 2026-05-10 10:08:14
●NSns1.afternic.com2026-03-29 → 2026-05-10 · 4 obs
○ 2026-04-21 18:33:22
● 2026-05-06 04:24:46
● 2026-05-10 10:08:14
●NSns2.afternic.com2026-03-29 → 2026-05-10 · 4 obs
○ 2026-04-21 18:33:22
● 2026-05-06 04:24:46
● 2026-05-10 10:08:14
●A13.248.169.482026-03-29 → 2026-05-10 · 5 obs
● 2026-03-29 08:12:16
○ 2026-04-21 18:33:22
● 2026-05-06 04:24:46
● 2026-05-10 10:08:14
○A198.54.117.2122016-12-13 → 2016-12-13 · 3 obs
○ 2018-07-12 15:47:12
○ 2026-05-10 10:08:14
○A44.232.173.2492026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 18:33:22
○ 2026-05-06 04:24:46
○ 2026-05-10 10:08:14
○A52.40.42.1132026-04-21 → 2026-04-21 · 4 obs
● 2026-04-21 18:33:22
○ 2026-05-06 04:24:46
○ 2026-05-10 10:08:14
●A76.223.54.1462026-03-29 → 2026-05-10 · 5 obs
● 2026-03-29 08:12:16
○ 2026-04-21 18:33:22
● 2026-05-06 04:24:46
● 2026-05-10 10:08:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| site | ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info | - |
| coursera.site | ns1.afternic.com, ns2.afternic.com | - |
✅ Authoritative Response
Server:97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursera.site (unsigned zone)
⏱️ Timing
Total: 862ms | 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 |
Analysis
IP Addresses
The entity coursera.site points to two IP numbers: 13.248.169.48 and 76.223.54.146.
For instance, other host names gdsz.wm00.com, hostc63.chubbinstitute.com, i216-58-52-159.cybersurf.com, gtg.info and opusmed.com share IP numbers with coursera.site.
Name Servers
coursera.site is delegated to two name servers: ns1.afternic.com and ns2.afternic.com.
coursera.site uses the same name server setup as other domains such as medicaloans.com, regul.net, sigma.services, 0crypto.com and bi.publicsets.com.
coursera.site shares name servers with other domains at least partially, for example meercloud.com, elvica.com, realweb.pro, footballarbitrage.com and fourdollarclick.com.
These name servers are commonly used with verification-d3jclucsp89ganyqbydeny.ns101.verify.hn.
Host names with two IP numbers:
ns1.afternic.com points to 2603:5:2126::45 and 97.74.98.69; ns2.afternic.com points to 2603:5:2226::45 and 173.201.66.69.