sf4j.com - robtex.com
sf4j.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=1778782471 | ||||||
Same first word
Similar names
DNS History
16 records (10 active, 6 former)
○NSns1.mvdb.com2015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
○NSns3.mvdb.com2015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
○NSns5.mvdb.com2015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
●NSns51.cloudns.net2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
○NSns6.mvdb.com2015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
●NSpns51.cloudns.net2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●NSpns52.cloudns.net2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●NSpns53.cloudns.net2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●NSpns54.cloudns.net2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●MXalt1.aspmx.l.google.com2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●MXalt2.aspmx.l.google.com2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●MXalt3.aspmx.l.google.com2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●MXalt4.aspmx.l.google.com2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
●MXaspmx.l.google.com2026-04-08 → 2026-05-14 · 3 obs
● 2026-04-08 13:58:20
● 2026-05-14 18:24:14
○MXmail.mvdb.net2015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
○A31.25.99.992015-08-05 → 2016-10-05 · 4 obs
● 2016-10-05 12:03:42
○ 2026-04-08 13:58:20
○ 2026-05-14 18:24:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net... | - |
| sf4j.com | pns51.cloudns.net, pns52.cloudns.net, pns53.cloudns.net, pns54.cloudns.net | - |
✅ Authoritative Response
Server:185.136.99.192
NS records: pns51.cloudns.net, pns52.cloudns.net, pns53.cloudns.net, pns54.cloudns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sf4j.com (unsigned zone)
⏱️ Timing
Total: 669ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | pns53.cloudns.net, pns52.cloudns.net... |
| MX | 5 | alt4.aspmx.l.google.com (pri: 10), alt3.aspmx.l.google.com (pri: 10)... |
| TXT | 1 | v=spf1 a include:_spf.google.com ~all |
| SOA | 1 | ns51.cloudns.net support.cloudns.net |
Analysis
Name Servers
sf4j.com is delegated to five name servers: ns51.cloudns.net, pns51.cloudns.net, pns52.cloudns.net, pns53.cloudns.net and pns54.cloudns.net.
sf4j.com at least partially shares name servers with other domains, for instance 620684.com, 237.113.45.in-addr.arpa, hungarymeat.com, 1688361.com and cnsigns.cn.
These name servers are commonly used alongside ns54.cloudns.net, ns52.cloudns.net, ns53.cloudns.net, ns1.zapmaildns.com, ns2.zapmaildns.com, ns3.zapmaildns.com and ns4.zapmaildns.com.
Host names with two IP numbers:
ns51.cloudns.net points to 2a00:1768:1001:9::115 and 109.201.133.115
pns51.cloudns.net points to 2a06:fb00:1::1:192 and 185.136.96.192
pns52.cloudns.net points to 2a06:fb00:1::2:192 and 185.136.97.192
pns53.cloudns.net points to 2a06:fb00:1::3:192 and 185.136.98.192
pns54.cloudns.net points to 2a06:fb00:1::4:192 and 185.136.99.192
Mail Servers
sf4j.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.
sf4j.com shares some mail servers with other domains, at least partially, for instance ns500724.ns500737.ns500724.ns500724.ns500599.ns500724.ns500583.ns500697.ns500697.ns500599.yummyflingsfinder.com, ns500758.ns500698.ns500758.ns500758.ns500735.ns500736.ns500735.ns500735.ns500698.ns500708.ns500576.ns500708.ns500619.ns500698.trackreceptor.com, ns500671.ns500742.ns500754.ns500742.ns500742.ns500742.ns500688.ns500704.ns500671.ns500704.ns500671.ns500671.ns500291.ns500291.ns500291.ns500131.lustychickser.com, ns500742.ns500742.ns500754.ns500754.ns500742.ns500754.ns500688.ns500671.ns500688.ns500704.ns500649.ns500291.ns500649.tenderladiesbz.com and ns500758.ns500698.ns500758.ns500736.ns500736.ns500698.ns500735.ns500735.ns500735.ns500576.ns500576.ns500708.ns500619.ns500576.ns500652.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:f8b0:4023:c0d::1b and 142.250.141.26
alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1a and 108.177.123.26
alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1b and 172.253.116.26
alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.26
alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1a and 173.194.76.26