4calculus.com - robtex.com
4calculus.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns2.afternic.com ⭐ | ||||||
| A | 2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.afternic.com | ||||||
| A | 173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.afternic.com | ||||||
| NS | ns1.afternic.com | ||||||
| A | 2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.afternic.com | ||||||
| A | 97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.afternic.com | ||||||
| NS | verification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn ⚠️ Not in zone NS records | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
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=1771291435 | ||||||
Same first word
4calculus.com |
Similar names
DNS History
13 records (5 active, 8 former)
●NSns1.afternic.com2026-02-26 → 2026-02-26 · 3 obs
● 2026-02-26 14:34:28
● 2026-02-26 14:34:30
●NSns2.afternic.com2026-02-26 → 2026-02-26 · 3 obs
● 2026-02-26 14:34:28
● 2026-02-26 14:34:30
○NSpdns05.domaincontrol.com2015-07-18 → 2016-07-10 · 4 obs
● 2016-07-10 12:35:58
○ 2017-07-02 00:20:12
○ 2026-02-26 14:34:30
○NSpdns06.domaincontrol.com2015-07-18 → 2016-07-10 · 4 obs
● 2016-07-10 12:35:58
○ 2017-07-02 00:20:12
○ 2026-02-26 14:34:30
○NSpdns09.domaincontrol.com2017-07-02 → 2017-07-02 · 4 obs
● 2017-07-02 00:20:12
○ 2026-02-26 14:34:28
○ 2026-02-26 14:34:30
○NSpdns10.domaincontrol.com2017-07-02 → 2017-07-02 · 4 obs
● 2017-07-02 00:20:12
○ 2026-02-26 14:34:28
○ 2026-02-26 14:34:30
●NSverification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn2026-02-26 → 2026-02-26 · 3 obs
● 2026-02-26 14:34:28
● 2026-02-26 14:34:30
○MX.2026-02-26 → 2026-02-26 · 2 obs
○ 2026-02-26 14:34:30
○A104.255.195.1082017-07-02 → 2017-07-02 · 4 obs
● 2017-07-02 00:20:12
○ 2026-02-26 14:34:28
○ 2026-02-26 14:34:30
●A13.248.169.482026-02-26 → 2026-02-26 · 3 obs
● 2026-02-26 14:34:28
● 2026-02-26 14:34:30
○A174.49.73.682016-02-26 → 2016-07-10 · 5 obs
● 2016-02-26 12:58:18
● 2016-07-10 12:35:58
○ 2017-07-02 00:20:12
○ 2026-02-26 14:34:30
○A73.43.28.1812015-07-18 → 2015-11-18 · 4 obs
● 2015-11-18 11:28:12
○ 2016-02-26 12:58:18
○ 2026-02-26 14:34:30
●A76.223.54.1462026-02-26 → 2026-02-26 · 3 obs
● 2026-02-26 14:34:28
● 2026-02-26 14:34:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 4calculus.com | ns1.afternic.com, ns2.afternic.com, verification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn | 4 records |
✅ Authoritative Response
Server: 97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com, verification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4calculus.com (unsigned zone)
⏱️ Timing
Total: 3304ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.afternic.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.afternic.com, ns1.afternic.com, ns2.afternic.com...)
AI analysis
4calculus.com resolves to two IP numbers: 13.248.169.48 and 76.223.54.146.
Other host names, for instance old(0x706f726e).org, pls04-92.hosted.atrila.com, 247wisdom.com, flash-back.com and maknaangka.site share IP numbers with 4calculus.com.
4calculus.com is delegated to three name servers: ns1.afternic.com, ns2.afternic.com and verification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn.
4calculus.com partially shares name servers with other domains; examples include host-203-133-100-160.ip.kbtelecom.net, nstorsoc.bankingforyou.com, mail.bagchip.com, goapricot.com and liamwalker.com.
These name servers are often used with the name servers ns3.afternic.com and ns4.afternic.com.
Host names with two IP numbers:
ns1.afternic.com points to 2603:5:2126::45 and 97.74.98.69.
ns2.afternic.com points to 2603:5:2226::45 and 173.201.66.69.
verification-q4c3dtrs4cktkxdmmtp8sv.ns101.verify.hn points to 13.248.169.48 and 76.223.54.146.