calc101.com - robtex.com
calc101.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.177.52.200🇺🇸 WOLFRAM11106140.177.32.0/19 Wolfram Research, Inc. | ||||||
| NS | calc101.com ⭐ | ||||||
| A | 140.177.52.200🇺🇸 WOLFRAM11106140.177.32.0/19 Wolfram Research, Inc. | ||||||
| NS | wri-dns2.wolfram.com | ||||||
| A | 140.177.10.23🇺🇸 WOLFRAM11106140.177.0.0/20 Proxy fbo Champaign Telephone Company (AS25660) | ||||||
| PTR | wri-dns1.wolfram.com | ||||||
| PTR | wri-dns2.wolfram.com | ||||||
| NS | wri-dns3.wolfram.com | ||||||
| A | 140.177.10.19🇺🇸 WOLFRAM11106140.177.0.0/20 Proxy fbo Champaign Telephone Company (AS25660) | ||||||
| PTR | wri-dns0.wolfram.com | ||||||
| PTR | wri-dns3.wolfram.com | ||||||
| MX | mx1.wolfram.com ⭐ | ||||||
| A | 140.177.10.56🇺🇸 WOLFRAM11106140.177.0.0/20 Proxy fbo Champaign Telephone Company (AS25660) | ||||||
| PTR | mx1.wolfram.com | ||||||
| MX | mx2.wolfram.com ⭐ | ||||||
| A | 140.177.10.59🇺🇸 WOLFRAM11106140.177.0.0/20 Proxy fbo Champaign Telephone Company (AS25660) | ||||||
| PTR | mx2.wolfram.com | ||||||
| TXT | l98jq22poh3svjtnmbhtpeam74 | ||||||
| TXT | v=spf1 include:wolfram.com -all | ||||||
| SOA | calc101.compostmaster@wolfram.com 2004-04-15 #72 | ||||||
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 | ||||||
NS for
calc101.com |
Same first word
calc101.com |
DNS History
9 records (6 active, 3 former)
●NScalc101.com2015-06-07 → 2026-03-18 · 3 obs
● 2015-06-07 04:46:06
● 2026-03-18 10:29:22
○NSwri-dns0.wolfram.com2009-01-31 → 2016-11-15 · 4 obs
● 2016-11-15 11:23:24
○ 2026-02-18 16:14:38
○ 2026-03-18 10:29:22
○NSwri-dns1.wolfram.com2009-01-31 → 2016-11-15 · 4 obs
● 2016-11-15 11:23:24
○ 2026-02-18 16:14:38
○ 2026-03-18 10:29:22
●NSwri-dns2.wolfram.com2026-02-18 → 2026-03-18 · 3 obs
● 2026-02-18 16:14:38
● 2026-03-18 10:29:22
●NSwri-dns3.wolfram.com2026-02-18 → 2026-03-18 · 3 obs
● 2026-02-18 16:14:38
● 2026-03-18 10:29:22
●MXmx1.wolfram.com2009-01-31 → 2026-03-18 · 2 obs
● 2026-03-18 10:29:22
●MXmx2.wolfram.com2009-01-31 → 2026-03-18 · 2 obs
● 2026-03-18 10:29:22
○A140.177.205.252009-01-31 → 2016-11-15 · 4 obs
● 2016-11-15 11:23:24
○ 2026-02-18 16:14:38
○ 2026-03-18 10:29:22
●A140.177.52.2002026-02-18 → 2026-03-18 · 3 obs
● 2026-02-18 16:14:38
● 2026-03-18 10:29:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net... | - |
| calc101.com | wri-dns3.wolfram.com, wri-dns2.wolfram.com | 2 records |
✅ Authoritative Response
Server: 140.177.10.19
NS records: wri-dns3.wolfram.com, wri-dns2.wolfram.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for calc101.com (unsigned zone)
⏱️ Timing
Total: 258ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 140.177.52.200 |
| NS | 2 | wri-dns3.wolfram.com, wri-dns2.wolfram.com |
| MX | 2 | mx2.wolfram.com (pri: 10), mx1.wolfram.com (pri: 10) |
| TXT | 2 | l98jq22poh3svjtnmbhtpeam74, v=spf1 include:wolfram.com -all |
| SOA | 1 | calc101.com postmaster.wolfram.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (wri-dns3.wolfram.com, wri-dns2.wolfram.com)
Analysis
Name Server Role
calc101.com acts as the name server for calc101.com.
wri-dns2.wolfram.com and wri-dns3.wolfram.com are commonly used as name servers along with calc101.com.
IP Addresses
calc101.com points to a single IP number: 140.177.52.200.
Other host names, for instance mpdatascience.com, homeworkday.org, www.devel.graphica.com, spikeyspot.net and www.testweb.graphica.com share IP numbers with calc101.com.
Name Servers
calc101.com delegates to three name servers: calc101.com, wri-dns2.wolfram.com and wri-dns3.wolfram.com.
calc101.com shares name servers with other domains at least partially, for instance scienceworld.com, spikeyspot.org, wolframtones.com, wolframdemos.com and 33.177.140.in-addr.arpa.
These name servers are commonly used with dns-master.wolfram.com, wri-dns0.wolfram.com, wri-dns1.wolfram.com and ns6.wolfram.com.
Host names with a single IP number:
calc101.com points to 140.177.52.200.
wri-dns2.wolfram.com points to 140.177.10.23.
wri-dns3.wolfram.com points to 140.177.10.19.
Mail Servers
calc101.com is handled by two mail servers: mx1.wolfram.com and mx2.wolfram.com.
calc101.com shares the same mail server setup as other domains, including mathworld.com, wolframgroup.com, ericweisstein.com, wolfram-media.com and bywolfram.com.
At least part of calc101.com's mail servers are shared with other domains, for instance wolframphysics.org and tgjb.com.
Host names with one IP number:
mx1.wolfram.com points to: 140.177.10.56.
mx2.wolfram.com points to: 140.177.10.59.