51blocks.com - robtex.com
51blocks.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 | ||||||
rank #442849 in the tld
Same first word
51blocks.com |
DNS History
16 records (11 active, 5 former)
●NSns-1306.awsdns-35.org2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●NSns-1860.awsdns-40.co.uk2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●NSns-199.awsdns-24.com2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●NSns-908.awsdns-49.net2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
○NSns1.hurryuphosting.com2015-07-12 → 2017-01-13 · 4 obs
● 2017-01-13 06:27:20
○ 2026-02-24 00:43:00
○ 2026-02-24 11:52:24
○NSns2.hurryuphosting.com2015-07-12 → 2017-01-13 · 4 obs
● 2017-01-13 06:27:20
○ 2026-02-24 00:43:00
○ 2026-02-24 11:52:24
●MXalt1.aspmx.l.google.com2015-07-12 → 2026-02-24 · 2 obs
● 2026-02-24 11:52:24
●MXalt2.aspmx.l.google.com2017-01-13 → 2026-02-24 · 3 obs
● 2017-01-13 06:27:20
● 2026-02-24 11:52:24
●MXalt3.aspmx.l.google.com2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●MXalt4.aspmx.l.google.com2026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●MXaspmx.l.google.com2015-07-12 → 2026-02-24 · 2 obs
● 2026-02-24 11:52:24
○MXaspmx2.googlemail.com2017-01-13 → 2017-01-13 · 4 obs
● 2017-01-13 06:27:20
○ 2026-02-24 00:43:00
○ 2026-02-24 11:52:24
○MXaspmx3.googlemail.com2017-01-13 → 2017-01-13 · 4 obs
● 2017-01-13 06:27:20
○ 2026-02-24 00:43:00
○ 2026-02-24 11:52:24
●A199.16.172.2332026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
●A199.16.173.1972026-02-24 → 2026-02-24 · 3 obs
● 2026-02-24 00:43:00
● 2026-02-24 11:52:24
○A209.59.162.2522015-07-12 → 2017-01-13 · 4 obs
● 2017-01-13 06:27:20
○ 2026-02-24 00:43:00
○ 2026-02-24 11:52:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 51blocks.com | ns-199.awsdns-24.com, ns-908.awsdns-49.net, ns-1860.awsdns-40.co.uk, ns-1306.awsdns-35.org | 1 record |
✅ Authoritative Response
Server: 205.251.199.68
NS records: ns-199.awsdns-24.com, ns-908.awsdns-49.net, ns-1860.awsdns-40.co.uk, ns-1306.awsdns-35.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51blocks.com (unsigned zone)
⏱️ Timing
Total: 446ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 199.16.172.233, 199.16.173.197 |
| NS | 4 | ns-1306.awsdns-35.org, ns-1860.awsdns-40.co.uk... |
| MX | 5 | aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 1 | v=spf1 include:_spf.google.com -all |
| SOA | 1 | ns-908.awsdns-49.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-199.awsdns-24.com)
AI analysis
51blocks.com points to two IP numbers: 199.16.172.233 and 199.16.173.197.
Other host names, for instance octant.us, ballance.eu, ismvape.com, chasedentalparts.com and bcrpro.com share IP numbers with 51blocks.com.
51blocks.com is delegated to four name servers: ns-199.awsdns-24.com, ns-908.awsdns-49.net, ns-1306.awsdns-35.org and ns-1860.awsdns-40.co.uk.
51blocks.com at least partially shares name servers with other domains, for instance transombackoffice.com, singforex.net, lhoopapro.com, pocketai.app and kuca.rs.
These name servers are commonly used with ns-204.awsdns-25.com, ns-761.awsdns-31.net, ns-1716.awsdns-22.co.uk, ns-1738.awsdns-25.co.uk, ns-451.awsdns-56.com and ns-538.awsdns-03.net.
Host names with two IP numbers:
ns-199.awsdns-24.com points to: 2600:9000:5300:c700::1 and 205.251.192.199.
ns-908.awsdns-49.net points to: 2600:9000:5303:8c00::1 and 205.251.195.140.
ns-1306.awsdns-35.org points to: 2600:9000:5305:1a00::1 and 205.251.197.26.
ns-1860.awsdns-40.co.uk points to: 2600:9000:5307:4400::1 and 205.251.199.68.
51blocks.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
51blocks.com shares mail servers with other domains at least in part, for instance tradesmanroofing.com, springwoodhighschool.co.uk, ns500731.ns500742.ns500731.ns500671.ns500731.ns500742.ns500705.ns500705.ns500649.ns500666.tenderladiesbz.com, ns500731.ns500754.ns500731.ns500671.ns500754.ns500671.ns500671.ns500704.ns500678.ns500678.ns500678.ns500678.tenderladiesbz.com and ns500759.ns500698.ns500759.ns500758.ns500735.ns500735.ns500698.ns500735.ns500736.ns500736.ns500735.ns500698.ns500576.ns500619.ns500576.trackreceptor.com.
These mail servers are often used with aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.
Host names with two IP numbers:
aspmx.l.google.com points to 2607:f8b0:4004:c19::1b and 172.253.62.27.
alt1.aspmx.l.google.com points to 2607:f8b0:4003:c30::1b and 74.125.27.26.
alt2.aspmx.l.google.com points to 2607:f8b0:4001:c70::1a and 192.178.209.26.
alt3.aspmx.l.google.com points to 2607:f8b0:4024:c0d::1b and 192.178.152.26.
alt4.aspmx.l.google.com points to 2607:f8b0:4023:403::1a and 142.250.96.27.