smtp.okopen.com - robtex.com
smtp.okopen.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.namebrightdns.com ⚠️ Not in parent delegation | ||||||
| A | 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix | ||||||
| A | 2600:1f18:683a:ae1a:7bc2:638d:8ca6:fcc4🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix | ||||||
| A | 2600:1f18:683a:ae1b:d57d:390a:64b4:d4f1🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix | ||||||
| A | 52.203.211.134🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix | ||||||
| PTR | ec2-52-203-211-134.compute-1.amazonaws.com | ||||||
| A | 52.204.81.90🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix | ||||||
| PTR | ec2-52-204-81-90.compute-1.amazonaws.com | ||||||
| NS | ns2.namebrightdns.com ⚠️ Not in parent delegation | ||||||
| A | 2600:1f18:683a:ae1b:885d:9b52:c623:6fb9🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix | ||||||
| A | 54.234.117.29🇺🇸 Amazon54.234.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-54-234-117-29.compute-1.amazonaws.com | ||||||
| A | 54.243.19.140🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-54-243-19-140.compute-1.amazonaws.com | ||||||
okopen.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.namebrightdns.com ⭐ | ||||||
| NS | ns2.namebrightdns.com | ||||||
| SOA | ns1.namebrightdns.comdns@namebright.com 2026-07-18 #1 | ||||||
Previously MX for
Same first word
Similar names
DNS History
6 records (2 active, 4 former)
●NSns1.namebrightdns.com2016-11-08 → 2026-07-18 · 2 obs
● 2026-07-18 17:22:30
●NSns2.namebrightdns.com2016-11-08 → 2026-07-18 · 2 obs
● 2026-07-18 17:22:30
○A211.40.221.2002015-08-03 → 2016-04-05 · 4 obs
● 2016-04-05 17:08:18
○ 2016-11-08 15:05:58
○ 2026-07-18 17:22:30
○A52.207.132.222016-11-08 → 2016-11-08 · 3 obs
● 2016-11-08 15:05:58
○ 2026-07-18 17:22:30
○A54.88.222.922016-11-08 → 2016-11-08 · 3 obs
● 2016-11-08 15:05:58
○ 2026-07-18 17:22:30
○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2016-11-08 → 2016-11-08 · 2 obs
○ 2026-07-18 17:22:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| okopen.com | ns1.namebrightdns.com, ns2.namebrightdns.com | 8 records |
✅ Authoritative Response
Server:54.234.117.29
NS records: ns1.namebrightdns.com, ns2.namebrightdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for okopen.com (unsigned zone)
⏱️ Timing
Total: 151ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.namebrightdns.com, ns2.namebrightdns.com |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns1.namebrightdns.com, ns1.namebrightdns.com, ns1.namebrightdns.com...)
Analysis
Name Servers
DNS delegation for smtp.okopen.com points to two name servers: ns1.namebrightdns.com and ns2.namebrightdns.com.
smtp.okopen.com shares its NS records with other domains, for example crtfd.com, rusyada.com, multicoin.net and two others.
smtp.okopen.com has at least partial name server overlap with other domains, such as asdzx.com, taxihaiphong.com, americanfinepaper.com and two others.
It is common to find these name servers paired with the name servers nsg1.namebrightdns.com, nsg2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.
Host names directing to five IP addresses:
ns1.namebrightdns.com has four IP addresses — 52.203.211.134, 52.204.81.90, 2600:1f18:683a:ae1a:6900:d1bd:7672:d0ca and two others.
Hostnames that map to three IP numbers:
ns2.namebrightdns.com has IP addresses 54.234.117.29, 54.243.19.140 and 2600:1f18:683a:ae1b:885d:9b52:c623:6fb9.