guelphoptical.com - robtex.com
guelphoptical.com
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=1774876632 | ||||||
Same first word
guelphoptical.com |
DNS History
10 records (7 active, 3 former)
●NSalberto.ns.cloudflare.com2026-03-18 → 2026-03-30 · 3 obs
● 2026-03-18 14:08:50
● 2026-03-30 13:21:00
●NSgrannbo.ns.cloudflare.com2026-03-18 → 2026-03-30 · 3 obs
● 2026-03-18 14:08:50
● 2026-03-30 13:21:00
○NSns1.dreamhost.com2015-12-12 → 2020-01-11 · 4 obs
● 2020-01-11 08:08:56
○ 2026-03-18 14:08:50
○ 2026-03-30 13:21:00
○NSns2.dreamhost.com2015-12-12 → 2020-01-11 · 4 obs
● 2020-01-11 08:08:56
○ 2026-03-18 14:08:50
○ 2026-03-30 13:21:00
○NSns3.dreamhost.com2015-12-12 → 2020-01-11 · 4 obs
● 2020-01-11 08:08:56
○ 2026-03-18 14:08:50
○ 2026-03-30 13:21:00
●MX_dc-mx.80794b647e7e.guelphoptical.com2026-03-18 → 2026-03-30 · 2 obs
● 2026-03-30 13:21:00
●A104.21.32.272026-03-18 → 2026-03-30 · 2 obs
● 2026-03-30 13:21:00
●A172.67.182.892026-03-18 → 2026-03-30 · 2 obs
● 2026-03-30 13:21:00
●A2606:4700:3032::ac43:b6592026-03-18 → 2026-03-30 · 2 obs
● 2026-03-30 13:21:00
●A2606:4700:3033::6815:201b2026-03-18 → 2026-03-30 · 2 obs
● 2026-03-30 13:21:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| guelphoptical.com | grannbo.ns.cloudflare.com, alberto.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.150
NS records: grannbo.ns.cloudflare.com, alberto.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for guelphoptical.com (unsigned zone)
⏱️ Timing
Total: 187ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.182.89, 104.21.32.27 |
| AAAA | 2 | 2606:4700:3032::ac43:b659, 2606:4700:3033::6815:201b |
| NS | 2 | alberto.ns.cloudflare.com, grannbo.ns.cloudflare.com |
| MX | 1 | _dc-mx.80794b647e7e.guelphoptical.com (p |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | alberto.ns.cloudflare.com dns.cloudflare |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (grannbo.ns.cloudflare.com, grannbo.ns.cloudflare.com, grannbo.ns.cloudflare.com...)
Analysis
IP Addresses
guelphoptical.com maps to four IP numbers: 2606:4700:3032::ac43:b659, 2606:4700:3033::6815:201b, 104.21.32.27 and 172.67.182.89.
Other host names, for instance urga.net, verygoodhealth.com, crewhouston.org, recup.de and kemhan.org share IP numbers with guelphoptical.com.
Name Servers
Two name servers alberto.ns.cloudflare.com and grannbo.ns.cloudflare.com handle delegation for guelphoptical.com.
guelphoptical.com uses the same name server setup as other domains, for example fangyuan009.com, wwwbehance.net, origamiami.com, swyyy.com and abriendolasalas.com.
guelphoptical.com partially shares name servers with other domains; examples include shuziqianbaoshishime.com.cn, qpyxxjpt.com.cn, tiyuyuleshidapingtai.com.cn, fcyoga.com and holiganyeniadres.vip.
These name servers commonly accompany malavika.ns.cloudflare.com, nelly.ns.cloudflare.com, dexter.ns.cloudflare.com and sonny.ns.cloudflare.com.
Host names with six IP numbers: alberto.ns.cloudflare.com points to: 2606:4700:58::a29f:2c12, 2803:f800:50::6ca2:c312, 2a06:98c1:50::ac40:2312, 108.162.195.18, 162.159.44.18 and 172.64.35.18; grannbo.ns.cloudflare.com points to: 2606:4700:50::a29f:2696, 2803:f800:50::6ca2:c296, 2a06:98c1:50::ac40:2296, 108.162.194.150, 162.159.38.150 and 172.64.34.150.
Mail Servers
guelphoptical.com is handled by a single mail server, _dc-mx.80794b647e7e.guelphoptical.com.
Host _dc-mx.80794b647e7e.guelphoptical.com resolves to two IPs: 2600:3c04::f03c:92ff:fe7d:7029 and 172.105.107.185.