cfsn.com - robtex.com
cfsn.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 66.39.50.21🇺🇸 AS785966.39.0.0/17 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | cfsn.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 | ||||||
| A | 2607:f441::d892:c124🇺🇸 AS78592607:f441::/32 Pair Networks, Inc. 2403 Sidney St STE 210 Pittsburgh PA 15203 United States | ||||||
| A | 216.146.193.36🇺🇸 AS7859216.146.192.0/19 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | ns9.ns0.com | ||||||
| MX | mail2.g24.pair.com ⭐ | ||||||
| A | 2607:f440::d85c:a63a🇺🇸 AS78592607:f440::/32 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | mail2.g24.pair.com | ||||||
| A | 216.92.166.58🇺🇸 AS7859216.92.0.0/16 Pair Networks, Inc. 2403 Sidney St. STE 210 Pittsburgh, PA 15203 | ||||||
| PTR | mail2.g24.pair.com | ||||||
| TXT | v=spf1 include:webmail.pair.com include:relay.pair.com include:pairlist.com a... | ||||||
| SOA | dns4.pair.comroot@pair.com 2025-11-18 #19 | ||||||
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=1776084372 | ||||||
PTR for
Same first word
Similar names
DNS History
8 records (4 active, 4 former)
●NSdns4.pair.com2026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 20:27:02
● 2026-04-13 13:04:58
○NSns000.ns0.com2015-08-22 → 2017-05-20 · 4 obs
● 2017-05-20 16:47:44
○ 2026-03-26 20:27:02
○ 2026-04-13 13:04:58
○NSns536.pair.com2015-08-22 → 2017-05-20 · 4 obs
● 2017-05-20 16:47:44
○ 2026-03-26 20:27:02
○ 2026-04-13 13:04:58
●NSns9.ns0.com2026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 20:27:02
● 2026-04-13 13:04:58
●MXmail2.g24.pair.com2026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 20:27:02
● 2026-04-13 13:04:58
○MXmailwash38.pair.com2015-08-22 → 2017-05-20 · 4 obs
● 2017-05-20 16:47:44
○ 2026-03-26 20:27:02
○ 2026-04-13 13:04:58
○A216.92.5.2422015-08-22 → 2017-05-20 · 4 obs
● 2017-05-20 16:47:44
○ 2026-03-26 20:27:02
○ 2026-04-13 13:04:58
●A66.39.50.212026-03-26 → 2026-04-13 · 3 obs
● 2026-03-26 20:27:02
● 2026-04-13 13:04:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cfsn.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 cfsn.com (unsigned zone)
⏱️ Timing
Total: 371ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 66.39.50.21 |
| NS | 2 | dns4.pair.com, ns9.ns0.com |
| MX | 1 | mail2.g24.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
cfsn.com points to a single IP number: 66.39.50.21.
Name Servers
Delegation for cfsn.com rests with two name servers, ns9.ns0.com and dns4.pair.com.
cfsn.com shares the same name server setup as other domains, including voternullification.org, colloidalsilvercostarica.com, infoplaza.net, pilesfistula.com and dfvineyard.com.
cfsn.com at least partially shares name servers with other domains, for instance 4bmws.com, pumpkin-(0x706f726e).com, faster-x.com, cue-inc.com and asmp-kc.org.
These name servers are commonly used with ns2.quickserve.com, ns8.ns0.com, ns7.ns0.com, ns1.quickserve.com, dns.pair.com, ns5.ns0.com and ns0.ns0.com.
Host names with two IP numbers: ns9.ns0.com points to 2607:f441::d892:c124 and 216.146.193.36; dns4.pair.com points to 2607:f440::d85c:fc0a and 216.92.252.10.
Mail Servers
cfsn.com is handled by a single mail server, mail2.g24.pair.com.
cfsn.com uses the same mail server configuration as other domains, such as out-look.de, vintagehifipgh.com, content-strategy-school.com, tonilo.com and mbgardens.org.
cfsn.com shares some mail servers with other domains at least partially, for example backlundrealty.com.
mail2.g24.pair.com resolves to two IP numbers: 2607:f440::d85c:a63a and 216.92.166.58.