j2f.app - robtex.com
j2f.app
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.222.158.236🇨🇦 OVH51.222.0.0/16 Hosting route | ||||||
| PTR | srv.j2f.app | ||||||
| NS | ns1.j2f.app ⭐ | ||||||
| A | 51.222.158.236🇨🇦 OVH51.222.0.0/16 Hosting route | ||||||
| PTR | srv.j2f.app | ||||||
| NS | ns2.j2f.app | ||||||
| A | 54.39.173.33🇨🇦 OVH54.39.0.0/16 Hosting route | ||||||
| PTR | ip33.ip-54-39-173.net | ||||||
| MX | mx01.mail.icloud.com ⭐ | ||||||
| A | 17.42.251.62🇺🇸 Apple17.42.0.0/16 | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| PTR | mx3.mail.icloud.com | ||||||
| A | 17.56.9.31🇺🇸 Apple17.56.9.0/24 | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| A | 17.57.152.5🇺🇸 Apple17.57.152.0/23 | ||||||
| PTR | ic4-privaterelay.appleid.com | ||||||
| PTR | smtp1.ic4-privaterelay.appleid.com | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| A | 17.57.154.33🇺🇸 Apple17.57.154.0/24 | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| A | 17.57.155.25🇺🇸 Apple17.57.155.0/24 | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| A | 17.57.156.30🇺🇸 Apple17.57.156.0/24 | ||||||
| PTR | mx01.mail.icloud.com | ||||||
| PTR | mx02.mail.icloud.com | ||||||
| MX | mx02mail.icloud.com ⭐ | ||||||
| SOA | ns1.j2f.approot@j2f.app 2026-02-04 #3 | ||||||
app
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns-tld1.charlestonroadregistry.com ⭐ | ||||||
| NS | ns-tld2.charlestonroadregistry.com | ||||||
| NS | ns-tld3.charlestonroadregistry.com | ||||||
| NS | ns-tld4.charlestonroadregistry.com | ||||||
| NS | ns-tld5.charlestonroadregistry.com | ||||||
| SOA | ns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=101427 | ||||||
Subdomains
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.j2f.app2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 04:53:50
●NSns2.j2f.app2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 04:53:50
●MXmx01.mail.icloud.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 04:53:50
●MXmx02mail.icloud.com2026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 04:53:50
●A51.222.158.2362026-03-28 → 2026-03-29 · 2 obs
● 2026-03-29 04:53:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| app | ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com... | - |
| j2f.app | ns2.j2f.app, ns1.j2f.app | 2 records |
✅ Authoritative Response
Server:51.222.158.236
NS records: ns2.j2f.app, ns1.j2f.app
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for j2f.app (unsigned zone)
⏱️ Timing
Total: 161ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.222.158.236 |
| NS | 2 | ns2.j2f.app, ns1.j2f.app |
| MX | 2 | mx02mail.icloud.com (pri: 10), mx01.mail.icloud.com (pri: 10) |
| SOA | 1 | ns1.j2f.app root.j2f.app |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (ns1.j2f.app, ns2.j2f.app)
Analysis
Hierarchy
j2f.app is a parent of ns1.j2f.app, ns2.j2f.app and srv.j2f.app.
IP Addresses
j2f.app resolves to one IP number: 51.222.158.236.
Other host names including ltquote.com, srv.j2f.app, ns1.j2f.app and etquote.com share IP numbers with j2f.app.
Name Servers
j2f.app's delegation uses two name servers: ns1.j2f.app and ns2.j2f.app.
Host names with a single IP address: ns1.j2f.app points to 51.222.158.236; ns2.j2f.app points to 54.39.173.33.
Mail Servers
j2f.app is served by two mail servers mx02mail.icloud.com and mx01.mail.icloud.com.
j2f.app shares the same mail server setup as other domains, for example joshsaul.com.
j2f.app shares at least some mail servers with other domains, for example leemohan.com, bdroundtable.com, foodlover.dk, harney.net and roperco.com.
These mail servers are often used together with the mail servers mx02.mail.icloud.com.
Host names with six IP numbers: mx01.mail.icloud.com points to: 17.42.251.62, 17.56.9.31, 17.57.152.5, 17.57.154.33, 17.57.155.25 and 17.57.156.30.