mail.justknow.com - robtex.com
mail.justknow.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 54.237.57.21🇺🇸 Amazon54.237.0.0/16 EC2 IAD prefix | ||||||
| PTR | ns1.namepros-dns.com | ||||||
| NS | ns1.afternic.com ⭐ ⚠️ Not in parent delegation | ||||||
| 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 ⚠️ Not in parent delegation | ||||||
| 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 | ||||||
| SOA | ns1.afternic.comdns@jomax.net serial=1 | ||||||
justknow.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns1.afternic.com ⭐ | ||||||
| NS | 2rdsmh2br22hsppdbrhmzf99zsdp2fpj.ns.namepros-dns.is ⚠️ Not in zone NS records | ||||||
| NS | ns2.afternic.com | ||||||
| NS | verification-vpgpzsqa3cv4haccypio4o.ns101.verify.hn ⚠️ Not in zone NS records | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.afternic.comdns@jomax.net serial=1 | ||||||
Previously MX for
Same first word
Similar names
DNS History
8 records (3 active, 5 former)
○NSns01.domaincontrol.com2015-11-20 → 2016-05-04 · 4 obs
● 2016-05-04 16:56:24
○ 2026-05-13 11:28:32
○ 2026-05-13 11:28:36
○NSns02.domaincontrol.com2015-11-20 → 2016-05-04 · 4 obs
● 2016-05-04 16:56:24
○ 2026-05-13 11:28:32
○ 2026-05-13 11:28:36
●NSns1.afternic.com2026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 11:28:32
● 2026-05-13 11:28:36
●NSns2.afternic.com2026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 11:28:32
● 2026-05-13 11:28:36
○MXmail.justknow.com2015-11-20 → 2016-05-04 · 4 obs
● 2016-05-04 16:56:24
○ 2026-05-13 11:28:32
○ 2026-05-13 11:28:36
●A54.237.57.212026-05-13 → 2026-05-13 · 3 obs
● 2026-05-13 11:28:32
● 2026-05-13 11:28:36
○A97.107.141.2372015-07-24 → 2016-05-04 · 4 obs
● 2016-05-04 16:56:24
○ 2026-05-13 11:28:32
○ 2026-05-13 11:28:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| justknow.com | ns1.afternic.com, ns2.afternic.com, verification-vpgpzsqa3cv4haccypio4o.ns101.verify.hn, 2rdsmh2br22hsppdbrhmzf99zsdp2fpj.ns.namepros-dns.is | 4 records |
✅ Authoritative Response
Server:97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com, verification-vpgpzsqa3cv4haccypio4o.ns101.verify.hn, 2rdsmh2br22hsppdbrhmzf99zsdp2fpj.ns.namepros-dns.is
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for justknow.com (unsigned zone)
⏱️ Timing
Total: 3778ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| 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
mail.justknow.com resolves to one IP number: 54.237.57.21.
Other host names, for instance medianix.com, muxe.com, g31.alink.to, hotelrembrandt.com and www.ukimmobilien.com share IP numbers with mail.justknow.com.
Name Servers
mail.justknow.com's delegation uses two name servers: ns1.afternic.com and ns2.afternic.com.
mail.justknow.com uses the same name server setup as other domains, such as owa.cardnotec.com, www.288ag.com, pawland.com, ns.wrapscience.com and tu-web.com.
mail.justknow.com at least partially shares name servers with other domains, including limbini.com, asterly.com, lovewins.tv, palrancho.com and medievalmagic.com.
These name servers are often used with verification-d3jclucsp89ganyqbydeny.ns101.verify.hn and verification-a3slq86x2thrnts52waagm.ns101.verify.hn.
Host names with two IPs:
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