usref.org - dns.ninja
usref.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 23.236.62.147🇺🇸 Google23.236.62.0/24 | ||||||
| PTR | 147.62.236.23.bc.googleusercontent.com | ||||||
| NS | ns87.worldnic.com ⭐ | ||||||
| A | 162.159.26.131Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns88.worldnic.com | ||||||
| A | 162.159.27.117Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| MX | mx001.netsol.xion.oxcs.net ⭐ | ||||||
| A | 173.45.18.128🇨🇦 AMC173.45.16.0/22 | ||||||
| PTR | mx31.oxsus-vadesecure.net | ||||||
| MX | mx002.netsol.xion.oxcs.net ⭐ | ||||||
| A | 173.45.18.129🇨🇦 AMC173.45.16.0/22 | ||||||
| PTR | mx32.oxsus-vadesecure.net | ||||||
| MX | mx003.netsol.xion.oxcs.net ⭐ | ||||||
| A | 51.81.206.108🇺🇸 OVH51.81.128.0/17 Hosting route | ||||||
| PTR | mx33.oxsus-vadesecure.net | ||||||
| MX | mx004.netsol.xion.oxcs.net ⭐ | ||||||
| A | 51.81.206.109🇺🇸 OVH51.81.128.0/17 Hosting route | ||||||
| PTR | mx34.oxsus-vadesecure.net | ||||||
| TXT | v=spf1 include:spf.registeredsite.com include:spf.cloudus.oxcs.net ~all | ||||||
| SOA | NS87.WORLDNIC.COMnamehost@WORLDNIC.COM serial=122102013 | ||||||
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=1786705048 | ||||||
Subdomains
mail.usref.org |
Same first word
Similar names
DNS History
11 records (7 active, 4 former)
○NSns05.webtogether.com2015-08-13 → 2019-03-18 · 4 obs
● 2019-03-18 00:11:46
○ 2026-03-25 02:36:52
○ 2026-08-14 11:25:02
○NSns06.webtogether.com2015-08-13 → 2019-03-18 · 4 obs
● 2019-03-18 00:11:46
○ 2026-03-25 02:36:52
○ 2026-08-14 11:25:02
●NSns87.worldnic.com2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
●NSns88.worldnic.com2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
○MXmailhost2.webtogether.com2015-08-13 → 2019-03-18 · 4 obs
● 2019-03-18 00:11:46
○ 2026-03-25 02:36:52
○ 2026-08-14 11:25:02
●MXmx001.netsol.xion.oxcs.net2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
●MXmx002.netsol.xion.oxcs.net2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
●MXmx003.netsol.xion.oxcs.net2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
●MXmx004.netsol.xion.oxcs.net2026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
○A199.47.69.272015-08-13 → 2019-03-18 · 4 obs
● 2019-03-18 00:11:46
○ 2026-03-25 02:36:52
○ 2026-08-14 11:25:02
●A23.236.62.1472026-03-25 → 2026-08-14 · 3 obs
● 2026-03-25 02:36:52
● 2026-08-14 11:25:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| usref.org | ns87.worldnic.com, ns88.worldnic.com | - |
✅ Authoritative Response
Server:162.159.26.131
NS records: ns87.worldnic.com, ns88.worldnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for usref.org (unsigned zone)
⏱️ Timing
Total: 448ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.236.62.147 |
| NS | 2 | ns88.worldnic.com, ns87.worldnic.com |
| MX | 4 | mx002.netsol.xion.oxcs.net (pri: 10), mx003.netsol.xion.oxcs.net (pri: 10)... |
| TXT | 1 | v=spf1 include:spf.registeredsite.com in |
| SOA | 1 | NS87.WORLDNIC.COM namehost.WORLDNIC.COM |
Analysis
Hierarchy
usref.org serves as the parent of mail.usref.org.
IP Addresses
usref.org has exactly one IP address — 23.236.62.147.
alpinemdf.com.au, host38.adsutton.com, absolutebearing.coffee plus two other host names have IP numbers in common with usref.org.
Name Servers
DNS delegation for usref.org points to two name servers: ns87.worldnic.com and ns88.worldnic.com.
The name server configuration of usref.org is shared with other domains, for instance redwingrestaurants.com, sovereigngraceministries.org, hallandhall.com and two others.
ns87.worldnic.com directs to 162.159.26.131 and ns88.worldnic.com directs to 162.159.27.117; each host name points to exactly one IP number.
Mail Servers
Four mail servers handle email for usref.org: mx001.netsol.xion.oxcs.net, mx002.netsol.xion.oxcs.net, mx003.netsol.xion.oxcs.net and mx004.netsol.xion.oxcs.net.
At least some of the mail servers used by usref.org are shared with other domains: livingstonelaw.com, lmallo.com, stpeterscatholicschool.com and two others among them.
Four host names, each with one IP address: mx001.netsol.xion.oxcs.net has 173.45.18.128, mx002.netsol.xion.oxcs.net has 173.45.18.129, mx003.netsol.xion.oxcs.net has 51.81.206.108 and mx004.netsol.xion.oxcs.net has 51.81.206.109.