firstsf.com - robtex.com
firstsf.com
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=1774480552 | ||||||
Subdomains
www.firstsf.com |
Same first word
firstsf.com |
Similar names
DNS History
11 records (8 active, 3 former)
○NSns15.domaincontrol.com2015-08-18 → 2017-04-04 · 4 obs
● 2017-04-04 09:21:02
○ 2026-03-25 23:20:34
○ 2026-03-25 23:20:36
○NSns16.domaincontrol.com2015-08-18 → 2017-04-04 · 4 obs
● 2017-04-04 09:21:02
○ 2026-03-25 23:20:34
○ 2026-03-25 23:20:36
●NSpdns03.domaincontrol.com2026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 23:20:34
● 2026-03-25 23:20:36
●NSpdns04.domaincontrol.com2026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 23:20:34
● 2026-03-25 23:20:36
●MXalt1.aspmx.l.google.com2015-08-18 → 2026-03-25 · 2 obs
● 2026-03-25 23:20:36
●MXalt2.aspmx.l.google.com2015-08-18 → 2026-03-25 · 2 obs
● 2026-03-25 23:20:36
●MXaspmx.l.google.com2015-08-18 → 2026-03-25 · 2 obs
● 2026-03-25 23:20:36
●MXaspmx2.googlemail.com2015-08-18 → 2026-03-25 · 2 obs
● 2026-03-25 23:20:36
●MXaspmx3.googlemail.com2015-08-18 → 2026-03-25 · 2 obs
● 2026-03-25 23:20:36
●A35.164.64.2462026-03-25 → 2026-03-25 · 3 obs
● 2026-03-25 23:20:34
● 2026-03-25 23:20:36
○A52.27.100.2142015-08-18 → 2017-04-04 · 4 obs
● 2017-04-04 09:21:02
○ 2026-03-25 23:20:34
○ 2026-03-25 23:20:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| firstsf.com | pdns03.domaincontrol.com, pdns04.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.111.51
NS records: pdns03.domaincontrol.com, pdns04.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstsf.com (unsigned zone)
⏱️ Timing
Total: 1066ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 35.164.64.246 |
| NS | 2 | pdns03.domaincontrol.com, pdns04.domaincontrol.com |
| MX | 5 | aspmx.l.google.com (pri: 10), aspmx2.googlemail.com (pri: 40)... |
| TXT | 4 | google-site-verification=Wfqt4ppS3c3Xdym, v=spf1 include:_spf.google.com ~all... |
| SOA | 1 | pdns03.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (pdns03.domaincontrol.com, pdns03.domaincontrol.com, pdns04.domaincontrol.com...)
Analysis
Hierarchy
firstsf.com is parent of www.firstsf.com.
IP Addresses
firstsf.com points to a single IP: 35.164.64.246.
Other host names, for instance discoverthejoy.com, fbcinverness.org, snappages.com, hbcky.com and harmonyhall.org share IP numbers with firstsf.com.
Name Servers
firstsf.com's delegation is to two name servers pdns03.domaincontrol.com and pdns04.domaincontrol.com.
firstsf.com shares the same name server configuration as other domains, such as americanpresspublisher.net, jobulator.net, alexandheather.net, joleenetworks.com and mgrcollege.ac.in.
firstsf.com shares name servers with other domains at least partially, for instance bvc.training, rutenbilder.de and onpowerusa.com.
Host names with two IP numbers: pdns03.domaincontrol.com points to 2603:5:21f0::33 and 97.74.111.51; pdns04.domaincontrol.com points to 2603:5:22f0::33 and 173.201.79.51
Mail Servers
Five mail servers handle firstsf.com: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
firstsf.com shares some mail servers with other domains, including boredgamecompany.com, builders-club.com, ns500671.ns500731.ns500754.ns500731.ns500671.ns500731.ns500671.ns500704.ns500742.ns500704.ns500704.ns500649.ns500666.ns500666.ns500153.tenderladiesbz.com, shrijee.com and desiderata.org.
these mail servers are often used alongside the mail servers alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
aspmx2.googlemail.com points to 2a00:1450:4025:402::1b and 142.250.102.27.
aspmx3.googlemail.com points to 2607:f8b0:4023:1015::1a and 172.253.135.27.
aspmx.l.google.com points to 2607:f8b0:4023:c03::1a and 142.250.101.27.
alt1.aspmx.l.google.com points to 2607:f8b0:4023:2801::1a and 192.178.128.27.
alt2.aspmx.l.google.com points to 2a00:1450:4013:c1e::1b and 192.178.213.27.