firstcheck.com - dns.ninja
firstcheck.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.159.140.166Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns1.aplus.net ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2001:1810:9980:4::10🇨🇦 INFB2001:1810:9980::/48 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns1.aplus.net | ||||||
| A | 209.235.144.103🇨🇦 INFB209.235.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns1.aplus.net | ||||||
| NS | ns1.abac.com ⚠️ Not in zone NS records | ||||||
| A | 64.29.144.70🇨🇦 INFB64.29.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns1.abac.com | ||||||
| NS | ns2.abac.com ⚠️ Not in zone NS records | ||||||
| A | 64.29.154.70🇨🇦 INFB64.29.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns2.abac.com | ||||||
| NS | ns2.aplus.net ⚠️ Not in parent delegation | ||||||
| A | 2001:1810:4000:4::10🇨🇦 INFB2001:1810:4000::/35 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns2.aplus.net | ||||||
| A | 66.175.41.121🇨🇦 INFB66.175.0.0/18 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns2.aplus.net | ||||||
| NS | ns3.aplus.net ⚠️ Not in parent delegation | ||||||
| A | 2001:1810:1000:4::10🇨🇦 INFB2001:1810:1000::/36 | ||||||
| PTR | ns3.aplus.net | ||||||
| A | 69.49.97.156🇨🇦 INFB69.49.96.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | ns3.aplus.net | ||||||
| MX | mx1c40.carrierzone.com ⭐ | ||||||
| A | 64.29.151.236🇨🇦 INFB64.29.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | mx1c40.carrierzone.com | ||||||
| MX | mx2c40.carrierzone.com(100) | ||||||
| A | 64.29.151.237🇨🇦 INFB64.29.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | mx2c40.carrierzone.com | ||||||
| MX | mx3c40.carrierzone.com(110) | ||||||
| A | 64.29.151.238🇨🇦 INFB64.29.144.0/20 619A Kumpf Drive Waterloo ON N2V 1K8 Canada | ||||||
| PTR | mx3c40.carrierzone.com | ||||||
| TXT | 9t567ctn5covp5njss5efd2prg | ||||||
| TXT | v=spf1 include:spfc40.carrierzone.com ~all | ||||||
| SOA | ns1.aplus.nethostmaster@aplus.net 2026-04-20 #15 | ||||||
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=1785367612 | ||||||
Same first word
Similar names
fritscheck.nl |
checkfirst.co.nz |
checkfirst.com |
checkfirst.ai |
checkfirst.ca |
checkfirst.net.au |
checkfirst.com.au |
checkfirst.network |
DNS History
12 records (9 active, 3 former)
●MXmx1c40.carrierzone.com2015-06-21 → 2026-07-29 · 2 obs
● 2026-07-29 23:32:10
●MXmx2c40.carrierzone.com2015-06-21 → 2026-07-29 · 2 obs
● 2026-07-29 23:32:10
●MXmx3c40.carrierzone.com2015-06-21 → 2026-07-29 · 2 obs
● 2026-07-29 23:32:10
●A162.159.140.1662026-07-29 → 2026-07-29 · 2 obs
● 2026-07-29 23:32:10
○A34.68.234.42026-07-29 → 2026-07-29 · 1 obs
○A50.22.10.92015-11-15 → 2017-04-20 · 4 obs
● 2015-11-15 19:39:22
● 2017-04-20 23:47:28
○ 2026-07-29 23:32:10
○A64.29.151.2212015-06-21 → 2015-06-21 · 3 obs
○ 2015-11-15 19:39:22
○ 2026-07-29 23:32:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| firstcheck.com | ns2.abac.com, ns1.abac.com | 2 records |
✅ Authoritative Response
Server:64.29.144.70
NS records: ns2.abac.com, ns1.abac.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstcheck.com (unsigned zone)
⏱️ Timing
Total: 409ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.159.140.166 |
| NS | 3 | ns3.aplus.net, ns2.aplus.net... |
| MX | 3 | mx2c40.carrierzone.com (pri: 100), mx1c40.carrierzone.com (pri: 10)... |
| TXT | 2 | v=spf1 include:spfc40.carrierzone.com ~a, 9t567ctn5covp5njss5efd2prg |
| SOA | 1 | ns1.aplus.net hostmaster.aplus.net |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.abac.com, ns1.abac.com)
Analysis
IP Addresses
firstcheck.com resolves to one IP address: 162.159.140.166.
glareprotect.com, rorcpa.com, mail.adragency.com and two other host names share IP numbers with firstcheck.com.
Name Servers
firstcheck.com has five name servers, which are ns1.abac.com, ns2.abac.com, ns1.aplus.net and two others.
firstcheck.com has at least partial name server overlap with other domains, such as hyperbolichoneycombs.org, swedishsolutioninc.com, perryleehomehealthcare.com and two others.
It is common to see these name servers used together with name servers ns2.aplus.net and ns3.aplus.net.
Hostnames that resolve to two IP addresses:
ns1.aplus.net resolves to two addresses: 209.235.144.103 and 2001:1810:9980:4::10.
ns2.aplus.net resolves to two addresses: 66.175.41.121 and 2001:1810:4000:4::10.
ns3.aplus.net resolves to two addresses: 69.49.97.156 and 2001:1810:1000:4::10.
Hosts with just one IP address:
The hostname ns1.abac.com resolves to 64.29.144.70.
The hostname ns2.abac.com resolves to 64.29.154.70.
Mail Servers
firstcheck.com has three mail servers: mx1c40.carrierzone.com, mx2c40.carrierzone.com and mx3c40.carrierzone.com.
firstcheck.com has at least partial mail server overlap with other domains such as quizzle.org, citsummercamp.com, fightsfat.com and two more.
This set of mail servers commonly appears together with the mail servers mx4c40.carrierzone.com.
mx1c40.carrierzone.com points to 64.29.151.236; mx2c40.carrierzone.com points to 64.29.151.237; mx3c40.carrierzone.com points to 64.29.151.238 — each hostname maps to exactly one IP address.