checkrecipient.io - robtex.com
checkrecipient.io
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1774790772 | ||||||
Same first word
checkrecipient.co.uk |
checkrecipient.info |
checkrecipient.com |
checkrecipient.net |
checkrecipient.email |
checkrecipient.io |
DNS History
11 records (10 active, 1 former)
○NSinfoblox-sc4.ppops.net2026-03-27 → 2026-03-27 · 2 obs
○ 2026-03-29 13:51:06
●NSns1.proofpoint.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●NSns3.proofpoint.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●NSpdns99.ultradns.biz2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●NSpdns99.ultradns.com2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●NSpdns99.ultradns.net2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●NSpdns99.ultradns.org2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●MXmailstore1.secureserver.net2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●MXsmtp.secureserver.net2026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●A15.197.148.332026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
●A3.33.130.1902026-03-27 → 2026-03-29 · 2 obs
● 2026-03-29 13:51:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io | - |
| checkrecipient.io | pdns99.ultradns.org, pdns99.ultradns.net, ns1.proofpoint.com, pdns99.ultradns.biz... | - |
✅ Authoritative Response
Server:156.154.67.99
NS records: pdns99.ultradns.org, pdns99.ultradns.net, ns1.proofpoint.com, pdns99.ultradns.biz, ns3.proofpoint.com, pdns99.ultradns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for checkrecipient.io (unsigned zone)
⏱️ Timing
Total: 680ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.148.33, 3.33.130.190 |
| NS | 6 | ns1.proofpoint.com, ns3.proofpoint.com... |
| MX | 2 | smtp.secureserver.net (pri: 0), mailstore1.secureserver.net (pri: 10) |
| SOA | 1 | infoblox-sc4.ppops.net ops.proofpoint.co |
Analysis
IP Addresses
checkrecipient.io resolves to two IP numbers: 3.33.130.190 and 15.197.148.33.
other host names including joubart.com, epicks.com, gonzalesnow.com, 305.mobi and lendsafe.com.au share IP numbers with checkrecipient.io.
Name Servers
checkrecipient.io is delegated to six name servers: pdns99.ultradns.biz, ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.com, pdns99.ultradns.net and pdns99.ultradns.org.
checkrecipient.io at least partially shares name servers with other domains, for instance 243.246.198.in-addr.arpa, sm-training.com, proofpoint.link, proofpoint.us and cloudfilter.com.pl.
These name servers are commonly used with infoblox-sc4.ppops.net, ns72.ultradns2.com and ns72.ultradns2.org.
Host names with two IP numbers:
pdns99.ultradns.biz points to 2610:a1:1015::87 and 156.154.66.99.
ns1.proofpoint.com points to 2620:100:9000:1::d0 and 208.84.67.208.
ns3.proofpoint.com points to 2620:100:9004:1::d0 and 208.84.66.208.
pdns99.ultradns.com points to 2001:502:f3ff::87 and 156.154.64.99.
pdns99.ultradns.net points to 2610:a1:1014::87 and 156.154.65.99.
pdns99.ultradns.org points to 2001:502:4612::87 and 156.154.67.99.
Mail Servers
Two mail servers handle checkrecipient.io: mailstore1.secureserver.net and smtp.secureserver.net.
checkrecipient.io shares the same mail server setup as other domains, for instance androidspeedup.com, watershed-group.com, helpusaveonline.info, ezkola.com and libertygives.com.
checkrecipient.io shares at least some mail servers with other domains, including bopskizzum.com, dharmaduta.org, medtourist.net and immersify.eu.
Host names with three IPs:
mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162.
smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113.