mathforge.org - dns.ninja
mathforge.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 109.123.120.183🇬🇧 UK2NET-AS109.123.112.0/20 | ||||||
| NS | ultra103.uk2.net ⭐ | ||||||
| A | 213.155.0.224 | ||||||
| PTR | dns2.uk.chimera.uk2group.com | ||||||
| NS | dns1.uk2.net | ||||||
| A | 213.155.0.223 | ||||||
| PTR | dns1.uk.chimera.uk2group.com | ||||||
| NS | dns2.uk2.net | ||||||
| A | 213.155.0.224 | ||||||
| PTR | dns2.uk.chimera.uk2group.com | ||||||
| NS | dns3.uk2.net | ||||||
| A | 213.155.0.226 | ||||||
| PTR | dns3.uk.chimera.uk2group.com | ||||||
| MX | mx.stackmail.com ⭐ | ||||||
| A | 185.151.28.67🇬🇧 TWENTYI185.151.28.0/24 | ||||||
| PTR | mx.stackmail.com | ||||||
| TXT | v=spf1 include:spf.stackmail.com a mx -all | ||||||
| SOA | ultra103.uk2.nethostmaster@mathforge@org 2015-06-05 #21 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1782887089 | ||||||
Subdomains
Same first word
mathforge.org |
mathforge.net |
mathforge.com |
Similar names
DNS History
9 records (6 active, 3 former)
●NSdns1.uk2.net2019-02-06 → 2026-07-01 · 3 obs
● 2019-02-06 03:22:04
● 2026-07-01 06:52:08
●NSdns2.uk2.net2019-02-06 → 2026-07-01 · 3 obs
● 2019-02-06 03:22:04
● 2026-07-01 06:52:08
●NSdns3.uk2.net2019-02-06 → 2026-07-01 · 3 obs
● 2019-02-06 03:22:04
● 2026-07-01 06:52:08
○NSultra104.uk2.net2015-05-20 → 2017-01-23 · 4 obs
● 2017-01-23 04:24:52
○ 2019-02-06 03:22:04
○ 2026-07-01 06:52:08
○MXmx.mathforge.org.cust.a.hostedemail.com2015-05-20 → 2019-02-06 · 4 obs
● 2019-02-06 03:22:04
○ 2026-03-18 10:12:10
○ 2026-07-01 06:52:08
●MXmx.stackmail.com2026-03-18 → 2026-07-01 · 3 obs
● 2026-03-18 10:12:10
● 2026-07-01 06:52:08
●A109.123.120.1832019-02-06 → 2026-07-01 · 3 obs
● 2019-02-06 03:22:04
● 2026-07-01 06:52:08
○A83.170.107.1452015-05-20 → 2017-01-23 · 4 obs
● 2017-01-23 04:24:52
○ 2019-02-06 03:22:04
○ 2026-07-01 06:52:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| mathforge.org | dns1.uk2.net, dns2.uk2.net, dns3.uk2.net | - |
✅ Authoritative Response
Server:213.155.0.223
NS records: dns1.uk2.net, dns2.uk2.net, dns3.uk2.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathforge.org (unsigned zone)
⏱️ Timing
Total: 578ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 109.123.120.183 |
| NS | 3 | dns3.uk2.net, dns2.uk2.net... |
| MX | 1 | mx.stackmail.com (pri: 0) |
| TXT | 1 | v=spf1 include:spf.stackmail.com a mx -a |
| SOA | 1 | ultra103.uk2.net hostmaster@mathforge.or |
Analysis
Hierarchy
rforum.mathforge.org and mail.mathforge.org each fall under mathforge.org as their parent domain.
IP Addresses
mathforge.org resolves to just one IP address, 109.123.120.183.
Further host names like rforum.mathforge.org and mail.mathforge.org overlap in IP numbers with mathforge.org.
Name Servers
The NS records for mathforge.org point to four name servers: dns1.uk2.net, dns2.uk2.net, dns3.uk2.net and ultra103.uk2.net.
There is at least partial name server overlap between mathforge.org and other domains — levelo.co.uk, squeakandbubbles.com, gulfhead.mobi and two more among them.
These name servers regularly appear alongside ultra104.uk2.net, ultra101.uk2.net, ultra102.uk2.net and 3 other name servers in NS record sets.
The hosts dns1.uk2.net, dns2.uk2.net, dns3.uk2.net and ultra103.uk2.net each carry one IP address: 213.155.0.223 for dns1.uk2.net, 213.155.0.224 for dns2.uk2.net, 213.155.0.226 for dns3.uk2.net and 213.155.0.224 for ultra103.uk2.net. The address 213.155.0.224 is shared by dns2.uk2.net and ultra103.uk2.net.
Host names pointing to 213.155.0.224 IP addresses: dns2.uk2.net and ultra103.uk2.net.
Mail Servers
The sole mail server for mathforge.org is mx.stackmail.com.
Among the domains sharing a mail server setup with mathforge.org are crossviewministries.org, neilfletcherracing.co.uk, kinmel.co.uk and two others.
mathforge.org and other domains — thewesternfrontway.com for instance — share at least some mail servers.
mx.stackmail.com has exactly one IP number: 185.151.28.67.