blc.ac.uk - robtex.com
blc.ac.uk
ac.uk
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns0.ja.net ⭐ | ||||||
| NS | auth03.ns.uu.net | ||||||
| NS | dns-3.dfn.de | ||||||
| NS | ns1.surfnet.nl | ||||||
| NS | ns2.ja.net | ||||||
| NS | ns3.ja.net | ||||||
| NS | ns4.ja.net | ||||||
| SOA | ns0.ja.netoperations@ja.net 2026-03-26 #30 | ||||||
Subdomains
www.blc.ac.uk |
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
○NSagate.lut.ac.uk2015-06-30 → 2016-08-01 · 4 obs
● 2016-08-01 19:06:58
○ 2026-03-13 03:49:32
○ 2026-03-31 23:12:16
●NSns1.f5clouddns.com2026-03-13 → 2026-03-31 · 3 obs
● 2026-03-13 03:49:32
● 2026-03-31 23:12:16
●NSns2.derby.ac.uk2015-06-30 → 2026-03-31 · 2 obs
● 2026-03-31 23:12:16
●NSns2.f5clouddns.com2026-03-13 → 2026-03-31 · 3 obs
● 2026-03-13 03:49:32
● 2026-03-31 23:12:16
●NSns3.derby.ac.uk2015-06-30 → 2026-03-31 · 2 obs
● 2026-03-31 23:12:16
○NSns4.ja.net2015-06-30 → 2016-08-01 · 4 obs
● 2016-08-01 19:06:58
○ 2026-03-13 03:49:32
○ 2026-03-31 23:12:16
●MXblc-ac-uk.mail.protection.outlook.com2016-08-01 → 2026-03-31 · 3 obs
● 2016-08-01 19:06:58
● 2026-03-31 23:12:16
○MXcluster5.eu.messagelabs.com2015-06-30 → 2016-04-03 · 4 obs
● 2016-04-03 00:42:58
○ 2016-08-01 19:06:58
○ 2026-03-31 23:12:16
○A78.136.52.442015-06-30 → 2016-08-01 · 4 obs
● 2016-08-01 19:06:58
○ 2026-03-13 03:49:32
○ 2026-03-31 23:12:16
●A87.237.56.2502026-03-13 → 2026-03-31 · 3 obs
● 2026-03-13 03:49:32
● 2026-03-31 23:12:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| uk | nsa.nic.uk, nsb.nic.uk, nsc.nic.uk, nsd.nic.uk... | - |
| ac.uk | ns0.ja.net, ns1.surfnet.nl, ns2.ja.net, ns3.ja.net... | - |
| blc.ac.uk | ns2.derby.ac.uk, ns1.f5clouddns.com, ns3.derby.ac.uk, ns2.f5clouddns.com | 2 records |
✅ Authoritative Response
Server:107.162.176.221
NS records: ns2.derby.ac.uk, ns1.f5clouddns.com, ns3.derby.ac.uk, ns2.f5clouddns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for blc.ac.uk (unsigned zone)
⏱️ Timing
Total: 914ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 87.237.56.250 |
| NS | 4 | ns3.derby.ac.uk, ns1.f5clouddns.com... |
| MX | 1 | blc-ac-uk.mail.protection.outlook.com (p |
| TXT | 11 | QuoVadis=857e3e37-279a-4f14-8478-21c83df, 0426C3A4-72E0-41DA-8559-8F08D508CB13... |
| SOA | 1 | ns1.f5clouddns.com hostmaster.derby.ac.u |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns3.derby.ac.uk, ns2.derby.ac.uk)
Analysis
Hierarchy
The parent of www.blc.ac.uk is blc.ac.uk.
IP Addresses
blc.ac.uk points to IP number: 87.237.56.250.
Other host names such as p3search.com, mail.howgatesable.co.uk, gorvin.co.uk, acg.co.uk and www.blc.ac.uk share IPs with blc.ac.uk.
Name Servers
blc.ac.uk is delegated to four name servers: ns1.f5clouddns.com, ns2.f5clouddns.com, ns2.derby.ac.uk and ns3.derby.ac.uk.
blc.ac.uk at least partially shares name servers with other domains, for instance valsparautomotiveacademy.com, plasti-kote.se, w2d.at, sherwin.net and deck-wash.com.
These name servers are commonly used alongside ns1.fnni.com, ns5.fnni.com, ns1.f5cloudservices.com, ns2.f5cloudservices.com, ns3.aztecaservicios.mx, ns4.aztecaservicios.mx, ns1.aztecaservicios.com, ns.cgi.ca, ns1.bluecatdns.com and ns.cgi.com.
Host names with two IP numbers:
ns1.f5clouddns.com points to: 2604:e180:1071::3:1 and 107.162.234.197.
ns2.f5clouddns.com points to: 2604:e180:1071::ffff:6ba2:b0dd and 107.162.176.221.
Host names with one IP number:
ns2.derby.ac.uk points to: 193.60.149.202.
ns3.derby.ac.uk points to: 193.60.149.203.
Mail Servers
blc.ac.uk is handled by a single mail server, blc-ac-uk.mail.protection.outlook.com.
Host name blc-ac-uk.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::1, 2a01:111:f403:ca04::5, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::9, 52.101.68.27, 52.101.73.2, 52.101.73.12 and 52.101.73.16.