51blue.com - robtex.com
51blue.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=1771291435 | ||||||
Same first word
51blue.com |
Similar names
DNS History
17 records (6 active, 11 former)
○NSf1g1ns1.dnspod.net2015-06-02 → 2017-01-18 · 4 obs
● 2017-01-18 14:03:54
○ 2018-06-20 13:58:12
○ 2026-03-16 15:22:32
○NSf1g1ns2.dnspod.net2015-06-02 → 2017-01-18 · 4 obs
● 2017-01-18 14:03:54
○ 2018-06-20 13:58:12
○ 2026-03-16 15:22:32
●NSns-1236.awsdns-26.org2026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
●NSns-1760.awsdns-28.co.uk2026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
●NSns-265.awsdns-33.com2026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
●NSns-814.awsdns-37.net2026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
○NSns0.phase8.net2018-06-20 → 2018-06-20 · 4 obs
● 2018-06-20 13:58:12
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
○NSns1.phase8.net2018-06-20 → 2018-06-20 · 4 obs
● 2018-06-20 13:58:12
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
○NSns2.phase8.net2018-06-20 → 2018-06-20 · 4 obs
● 2018-06-20 13:58:12
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
○MXathena.hosts.co.uk2018-06-20 → 2018-06-20 · 3 obs
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
○MXhermes.hosts.co.uk2018-06-20 → 2018-06-20 · 3 obs
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
●MXsmtp.google.com2026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
●A113.30.189.122026-03-03 → 2026-03-16 · 3 obs
● 2026-03-03 12:05:18
● 2026-03-16 15:22:32
○A185.2.4.902018-06-20 → 2018-06-20 · 4 obs
● 2018-06-20 13:58:12
○ 2026-03-03 12:05:18
○ 2026-03-16 15:22:32
○A47.88.50.162016-04-06 → 2016-04-06 · 4 obs
● 2016-04-06 22:53:38
○ 2018-06-20 13:58:12
○ 2026-03-16 15:22:32
○A58.96.181.322015-06-02 → 2015-10-20 · 4 obs
● 2015-10-20 15:06:50
○ 2016-04-06 22:53:38
○ 2026-03-16 15:22:32
○CNAMEns.wangguai.com2015-06-02 → 2016-04-06 · 6 obs
● 2015-10-20 15:06:50
○ 2016-01-04 04:28:44
● 2016-04-06 22:53:38
○ 2017-01-18 14:03:54
○ 2026-03-16 15:22:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 51blue.com | ns-265.awsdns-33.com, ns-814.awsdns-37.net, ns-1760.awsdns-28.co.uk, ns-1236.awsdns-26.org | 1 record |
✅ Authoritative Response
Server: 205.251.193.9
NS records: ns-265.awsdns-33.com, ns-814.awsdns-37.net, ns-1760.awsdns-28.co.uk, ns-1236.awsdns-26.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51blue.com (unsigned zone)
⏱️ Timing
Total: 441ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 113.30.189.12 |
| NS | 4 | ns-1236.awsdns-26.org, ns-1760.awsdns-28.co.uk... |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 2 | google-site-verification=UVYeoInKffm8cDI, v=spf1 include:_spf.google.com ~all |
| SOA | 1 | ns-814.awsdns-37.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-265.awsdns-33.com)
Analysis
IP Addresses
51blue.com points to a single IP: 113.30.189.12.
Other host names, for instance kazoani.com, _dc-mx.ee9226425f07.shakufmedia.co.il, dotzlink.com, hansmanlycare.com and _dc-mx.c7bc47ac790f.roglit-winery.co.il share IP numbers with 51blue.com.
Name Servers
51blue.com is delegated to four name servers: ns-265.awsdns-33.com, ns-814.awsdns-37.net, ns-1236.awsdns-26.org and ns-1760.awsdns-28.co.uk.
51blue.com at least partially shares its name servers with other domains, for instance harprateguide.com, euksmarterpuppies.com, usaluge.org, connectforce.com and exitus.nl.
Host names with two IPs: ns-265.awsdns-33.com points to 2600:9000:5301:900::1 and 205.251.193.9; ns-814.awsdns-37.net points to 2600:9000:5303:2e00::1 and 205.251.195.46; ns-1236.awsdns-26.org points to 2600:9000:5304:d400::1 and 205.251.196.212; ns-1760.awsdns-28.co.uk points to 2600:9000:5306:e000::1 and 205.251.198.224.
Mail Servers
51blue.com is served by a single mail server, smtp.google.com.
51blue.com uses the same mail server setup as other domains such as limbcre.com, qbic.co.za, robluff.co.uk, f-x.it and morelandplazapharmacy.com.
51blue.com shares some mail servers with other domains, including maghrebfilmfestival.com, maahimilk.com, elevatedperspective.ca, foxgroup.info and u-pinit.com.
these mail servers are often used with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx.l.google.com.
smtp.google.com points to nine IP numbers: 2607:f8b0:4023:c06::1a, 2607:f8b0:4023:c06::1b, 2607:f8b0:4023:c0b::1a, 2607:f8b0:4023:c0b::1b, 142.250.101.26, 142.250.101.27, 142.250.141.26, 142.250.141.27 and 142.251.2.26.