fo4.com - dns.ninja
fo4.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.92.181.40🇺🇸 AS7859216.92.0.0/16 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | fo4.com | ||||||
| NS | dns4.pair.com ⭐ | ||||||
| A | 2607:f440::d85c:fc0a🇺🇸 AS78592607:f440::/32 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | dns4.pair.com | ||||||
| A | 216.92.252.10🇺🇸 AS7859216.92.0.0/16 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | dns4.pair.com | ||||||
| NS | ns9.ns0.com | ||||||
| MX | mail2.g3.pair.com ⭐ | ||||||
| A | 2607:f440::d85c:53ed🇺🇸 AS78592607:f440::/32 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | mail2.g3.pair.com | ||||||
| A | 216.92.83.237🇺🇸 AS7859216.92.0.0/16 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | mail2.g3.pair.com | ||||||
| TXT | v=spf1 include:webmail.pair.com include:relay.pair.com include:pairlist.com a... | ||||||
| SOA | dns4.pair.comroot@pair.com 2026-04-28 #8 | ||||||
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=1783152356 | ||||||
PTR for
Same first word
Similar names
4fo.com |
o4f.com |
o4f.at |
4of.us |
f4o.org |
4fo.de |
4of.ru |
4of.cn |
o4f.co.uk |
o4f.org |
4of.net |
4fo.cc |
f4o.com |
4of.de |
f4o.de |
4of.com |
f4o.net |
o4f.de |
of4.com |
of4.de |
4fo.ch |
DNS History
11 records (4 active, 7 former)
●NSdns4.pair.com2026-03-22 → 2026-07-04 · 3 obs
● 2026-03-22 02:50:18
● 2026-07-04 08:33:22
○NSns.factorof4.com2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
○NSns.fo4.net2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
○NSns2.factorof4.com2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
○NSns3.factorof4.net2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
●NSns9.ns0.com2026-03-22 → 2026-07-04 · 3 obs
● 2026-03-22 02:50:18
● 2026-07-04 08:33:22
○MXmail.fo4.net2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
●MXmail2.g3.pair.com2026-03-22 → 2026-07-04 · 3 obs
● 2026-03-22 02:50:18
● 2026-07-04 08:33:22
○MXmango.fo4.net2015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
○A209.240.82.12015-07-22 → 2016-11-29 · 4 obs
● 2016-11-29 07:46:04
○ 2026-03-22 02:50:18
○ 2026-07-04 08:33:22
●A216.92.181.402026-03-22 → 2026-07-04 · 3 obs
● 2026-03-22 02:50:18
● 2026-07-04 08:33:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, i.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net... | - |
| fo4.com | dns4.pair.com, ns9.ns0.com | 4 records |
✅ Authoritative Response
Server:216.92.252.10
NS records: dns4.pair.com, ns9.ns0.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for fo4.com (unsigned zone)
⏱️ Timing
Total: 345ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.92.181.40 |
| NS | 2 | dns4.pair.com, ns9.ns0.com |
| MX | 1 | mail2.g3.pair.com (pri: 50) |
| TXT | 1 | v=spf1 include:webmail.pair.com include: |
| SOA | 1 | dns4.pair.com root.pair.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (dns4.pair.com, dns4.pair.com, ns9.ns0.com...)
Analysis
IP Addresses
fo4.com has exactly one IP address — 216.92.181.40.
constancecasey.com, eddererickson.com, nygaardnotes.org plus two other host names have IP numbers in common with fo4.com.
Name Servers
fo4.com uses two name servers for its delegation: ns9.ns0.com and dns4.pair.com.
The name server configuration of fo4.com is shared with other domains, for instance towerstudio.com, 1stopresume.com, vitato.com and two others.
The name servers of fo4.com overlap at least partially with those of other domains — among them ckwei.com, doc-o-matic.org, keyboardchronicles.com and two more.
These name servers tend to appear together with the name servers ns2.quickserve.com, ns8.ns0.com and ns7.ns0.com, plus two others.
Host names pointing to two IP addresses:
dns4.pair.com directs traffic to 216.92.252.10 and 2607:f440::d85c:fc0a.
Mail Servers
fo4.com uses one mail server — mail2.g3.pair.com.
The mail server setup of fo4.com matches that of other domains such as crowleyrolloffs.com, danielleofri.com, silencethehorns.org and two others.
mail2.g3.pair.com resolves to two IP numbers — 216.92.83.237 and 2607:f440::d85c:53ed.