booleanoverflow.com - dns.ninja
booleanoverflow.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=1781490100 | ||||||
Same first word
booleanoverflow.com |
DNS History
8 records (8 active, 0 former)
●NSns-us.1and1-dns.com2017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
●NSns-us.1and1-dns.de2017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
●NSns-us.1and1-dns.org2017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
●NSns-us.1and1-dns.us2017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
●A216.250.120.1332017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
●A2607:f1c0:1000:2095:3804:4272:1307:d0112017-01-08 → 2026-06-15 · 2 obs
● 2026-06-15 02:49:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, f.gtld-servers.net... | - |
| booleanoverflow.com | ns-us.1and1-dns.us, ns-us.1and1-dns.de, ns-us.1and1-dns.org, ns-us.1and1-dns.com | 2 records |
✅ Authoritative Response
Server:217.160.81.2
NS records: ns-us.1and1-dns.us, ns-us.1and1-dns.de, ns-us.1and1-dns.org, ns-us.1and1-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for booleanoverflow.com (unsigned zone)
⏱️ Timing
Total: 906ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.250.120.133 |
| AAAA | 1 | 2607:f1c0:1000:2095:3804:4272:1307:d011 |
| NS | 4 | ns-us.1and1-dns.us, ns-us.1and1-dns.org... |
| MX | 2 | mx00.1and1.com (pri: 10), mx01.1and1.com (pri: 10) |
| SOA | 1 | ns-us.1and1-dns.com hostmaster.1and1.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-us.1and1-dns.com, ns-us.1and1-dns.com)
Analysis
IP Addresses
booleanoverflow.com directs to two IP numbers, 216.250.120.133 and 2607:f1c0:1000:2095:3804:4272:1307:d011
marcum.co, landzflow.com, cartastarot.info and two other host names share IP numbers with booleanoverflow.com.
Name Servers
The authoritative name servers for booleanoverflow.com are ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us.
booleanoverflow.com partially shares its NS delegation with several other domains, including vance.email, aiccusa.org, narola.online and two others.
These name servers are regularly seen alongside ns51.1and1.com and ns52.1and1.com as name servers.
ns-us.1and1-dns.com, ns-us.1and1-dns.de, ns-us.1and1-dns.org and ns-us.1and1-dns.us each carry two IP addresses. ns-us.1and1-dns.com has 217.160.82.2 and 2001:8d8:fe:53:0:d9a0:5202:100; ns-us.1and1-dns.de has 217.160.80.2 and 2001:8d8:fe:53:0:d9a0:5002:100; ns-us.1and1-dns.org has 217.160.83.2 and 2001:8d8:fe:53:0:d9a0:5302:100; ns-us.1and1-dns.us has 217.160.81.2 and 2001:8d8:fe:53:0:d9a0:5102:100.
Mail Servers
Mail for booleanoverflow.com is handled by two mail servers — mx00.1and1.com and mx01.1and1.com.
booleanoverflow.com uses an identical mail server configuration to several other domains — among them howtoincorporatemybusiness.com, indiraja.com, wholeheartpress.com and two more.
booleanoverflow.com has at least partial mail server overlap with other domains such as pa-realestate.net, paradifamily.com, u15298996.onlinehome-server.com and two more.
These mail servers commonly appear together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two other mail servers.
mx00.1and1.com resolves to 74.208.5.3. mx01.1and1.com resolves to 74.208.5.21. Both host names point to a single IP number.