koster.com - dns.ninja
koster.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=1786315499 | ||||||
Same first word
Similar names
DNS History
10 records (9 active, 1 former)
●NSns3.pairnic.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●NSns4.pairnic.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●MXalt1.aspmx.l.google.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●MXalt2.aspmx.l.google.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●MXaspmx.l.google.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●MXaspmx2.googlemail.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●MXaspmx3.googlemail.com2015-08-21 → 2026-08-09 · 2 obs
● 2026-08-09 23:04:46
●A216.146.192.12026-02-15 → 2026-08-09 · 3 obs
● 2026-02-15 21:04:32
● 2026-08-09 23:04:46
○A216.239.32.212015-08-21 → 2017-03-25 · 4 obs
● 2017-03-25 03:05:52
○ 2026-02-15 21:04:32
○ 2026-08-09 23:04:46
●A2607:f441::d892:c0012026-02-15 → 2026-08-09 · 3 obs
● 2026-02-15 21:04:32
● 2026-08-09 23:04:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| koster.com | ns3.pairnic.com, ns4.pairnic.com | 4 records |
✅ Authoritative Response
Server:216.92.3.93
NS records: ns3.pairnic.com, ns4.pairnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for koster.com (unsigned zone)
⏱️ Timing
Total: 287ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.146.192.1 |
| AAAA | 1 | 2607:f441::d892:c001 |
| NS | 2 | NS4.PAIRNIC.com, NS3.PAIRNIC.com |
| MX | 5 | ASPMX2.GOOGLEMAIL.com (pri: 10), ALT2.ASPMX.L.GOOGLE.com (pri: 5)... |
| TXT | 1 | google-site-verification=4IgiTbSt_2xrf-w |
| SOA | 1 | ns3.pairnic.com root.pair.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns3.pairnic.com, ns3.pairnic.com, ns4.pairnic.com...)
Analysis
IP Addresses
koster.com points to the IP addresses 216.146.192.1 and 2607:f441::d892:c001
Among the host names that share IP numbers with koster.com are adkig.com, islandmax.com, ashleymacisaac.com and two others.
Name Servers
koster.com has two authoritative name servers — ns3.pairnic.com and ns4.pairnic.com.
koster.com has the same name server delegation as a number of other domains, such as tessive.com, daveklaft.net, hudsontga.com and two more.
Both ns3.pairnic.com and ns4.pairnic.com have two IP addresses each. ns3.pairnic.com resolves to 216.92.3.93 and 2607:f440::d85c:35d; ns4.pairnic.com resolves to 216.146.192.245 and 2607:f441::d892:c0f5.
Mail Servers
koster.com has five mail servers, which are aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
koster.com shares at least some of its mail servers with other domains — for example pennineconsulting.com, ns500671.ns500754.ns500742.ns500754.ns500671.ns500688.ns500705.ns500704.ns500666.ns500142.lusty(0x736c7574)z.com, goodshepherd-naperville.org and two more.
It is common to find these mail servers paired with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 more.
Hosts with two IP numbers each:
aspmx2.googlemail.com resolves to 192.178.234.27 and 2800:3f0:4003:c14::1b.
aspmx3.googlemail.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1b.
aspmx.l.google.com resolves to 173.194.45.27 and 2607:f8b0:4004:c1d::1b.
alt1.aspmx.l.google.com resolves to 192.178.234.26 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 172.253.116.26 IP addresses.