studref.com - dns.ninja
studref.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 5.45.74.77🇳🇱 SCALAXY-AS5.45.72.0/22 | ||||||
| PTR | mx.studref.com | ||||||
| NS | ns1.dyna-ns.net ⭐ | ||||||
| A | 2400:cb00:2049:1::a29f:1a5c🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 2400:cb00:2049:1::a29f:1b9e🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.26.92Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dyna-ns.net | ||||||
| A | 162.159.27.158Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.dyna-ns.net | ||||||
| NS | ns2.dyna-ns.net | ||||||
| A | 2400:cb00:2049:1::a29f:1805🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 2400:cb00:2049:1::a29f:1905🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.24.5Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dyna-ns.net | ||||||
| A | 162.159.25.5Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.dyna-ns.net | ||||||
| MX | mx.studref.com ⭐ | ||||||
| A | 5.45.74.77🇳🇱 SCALAXY-AS5.45.72.0/22 | ||||||
| PTR | mx.studref.com | ||||||
| TXT | v=spf1 ip4:5.45.74.77 ip4:5.45.75.95 a mx ~all | ||||||
| SOA | ns1.dyna-ns.nethostmaster@studref.com 2026-03-10 #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=1785065832 | ||||||
rank #217776 in the tld
WOT: SAFE (50/100)
📈 Tranco rank: #522,902
Subdomains
mx.studref.com |
Same first word
studref.com |
Similar names
DNS History
9 records (4 active, 5 former)
●NSns1.dyna-ns.net2026-03-19 → 2026-07-26 · 3 obs
● 2026-03-19 01:05:14
● 2026-07-26 11:39:42
○NSns1.topdns.me2017-06-20 → 2026-03-03 · 4 obs
● 2026-03-03 12:28:38
○ 2026-03-19 01:05:14
○ 2026-07-26 11:39:42
●NSns2.dyna-ns.net2026-03-19 → 2026-07-26 · 3 obs
● 2026-03-19 01:05:14
● 2026-07-26 11:39:42
○NSns2.topdns.me2017-06-20 → 2026-03-03 · 4 obs
● 2026-03-03 12:28:38
○ 2026-03-19 01:05:14
○ 2026-07-26 11:39:42
○NSns3.topdns.me2017-06-20 → 2026-03-03 · 4 obs
● 2026-03-03 12:28:38
○ 2026-03-19 01:05:14
○ 2026-07-26 11:39:42
●MXmx.studref.com2026-03-03 → 2026-07-26 · 2 obs
● 2026-07-26 11:39:42
○A37.252.14.2392018-10-15 → 2018-10-15 · 4 obs
● 2018-10-15 20:16:34
○ 2026-03-03 11:22:10
○ 2026-07-26 11:39:42
●A5.45.74.772026-03-03 → 2026-07-26 · 3 obs
● 2026-03-03 11:22:10
● 2026-07-26 11:39:42
○A5.45.85.462017-06-20 → 2017-06-20 · 3 obs
○ 2018-10-15 20:16:34
○ 2026-07-26 11:39:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| studref.com | ns2.dyna-ns.net, ns1.dyna-ns.net | - |
✅ Authoritative Response
Server:162.159.26.92
NS records: ns2.dyna-ns.net, ns1.dyna-ns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studref.com (unsigned zone)
⏱️ Timing
Total: 371ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 5.45.74.77 |
| NS | 2 | ns1.dyna-ns.net, ns2.dyna-ns.net |
| MX | 1 | mx.studref.com (pri: 10) |
| TXT | 1 | v=spf1 ip4:5.45.74.77 ip4:5.45.75.95 a m |
| SOA | 1 | ns1.dyna-ns.net hostmaster.studref.com |
Analysis
Hierarchy
studref.com is the parent zone for mx.studref.com.
IP Addresses
studref.com has exactly one IP address — 5.45.74.77.
studexpo.ru, xstud.ru, vuzlit.ru plus two other host names have IP numbers in common with studref.com.
Name Servers
studref.com is served by two delegated name servers, ns1.dyna-ns.net and ns2.dyna-ns.net.
The name server configuration of studref.com is shared with other domains, for instance komfortfurniture-pl.shop, com-mncsajda.info, guaguajiao1473.top and two others.
The hosts ns1.dyna-ns.net and ns2.dyna-ns.net each resolve to four IP numbers: ns1.dyna-ns.net directs to 162.159.26.92, 162.159.27.158, 2400:cb00:2049:1::a29f:1a5c and 2400:cb00:2049:1::a29f:1b9e, and ns2.dyna-ns.net directs to 162.159.24.5, 162.159.25.5, 2400:cb00:2049:1::a29f:1805 and 2400:cb00:2049:1::a29f:1905.
Mail Servers
studref.com uses one mail server — mx.studref.com.
There is one IP number for mx.studref.com: 5.45.74.77.