checkrecipientapp.com - robtex.com

checkrecipientapp.com

DNSSEC⚠️ Not signed
NSns1.proofpoint.com ⭐
A2620:100:9000:1::d0🇺🇸 Proofpoint2620:100:9000::/47 Inc.
PTRns1.proofpoint.com
A208.84.67.208🇺🇸 Proofpoint208.84.67.0/24 Inc.
PTRns1-at1.proofpoint.com
PTRns1.proofpoint.com
PTRns5.proofpoint.com
NSns3.proofpoint.com
A2620:100:9004:1::d0🇺🇸 Proofpoint2620:100:9004::/47 Inc.
PTRns3.proofpoint.com
A208.84.66.208🇺🇸 Proofpoint208.84.66.0/24 Inc.
PTRns1-sc4.proofpoint.com
PTRns2.proofpoint.com
PTRns3.proofpoint.com
PTRns4.proofpoint.com
NSpdns99.ultradns.biz
A2610:a1:1015::87🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns99.ultradns.biz
A156.154.66.99🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar
PTRpdns99.ultradns.biz
NSpdns99.ultradns.com
A2001:502:f3ff::87🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns99.ultradns.com
A156.154.64.99🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar
PTRpdns99.ultradns.com
NSpdns99.ultradns.net
A2610:a1:1014::87🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns99.ultradns.net
A156.154.65.99🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar
PTRpdns99.ultradns.net
NSpdns99.ultradns.org
A2001:502:4612::87🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns99.ultradns.org
A156.154.67.99🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar
PTRpdns99.ultradns.org
SOAns1.proofpoint.comops@proofpoint.com 2025-04-16 #28

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1774823507

Same first word

checkrecipientapp.com

DNS History

14 records (6 active, 8 former)

20162017201820192020202120222023202420252026NSns1.proofpoint.comns3.proofpoint.compdns99.ultradns.bizpdns99.ultradns.compdns99.ultradns.netpdns99.ultradns.orgns07.domaincontrol.comns08.domaincontrol.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comA50.63.202.45
○NSns07.domaincontrol.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○NSns08.domaincontrol.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
●NSns1.proofpoint.com2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
●NSns3.proofpoint.com2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
●NSpdns99.ultradns.biz2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
●NSpdns99.ultradns.com2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
●NSpdns99.ultradns.net2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
●NSpdns99.ultradns.org2026-03-27 → 2026-03-29 · 3 obs
○ 2018-12-13 11:08:18
● 2026-03-27 22:54:14
● 2026-03-29 22:41:52
○MXalt1.aspmx.l.google.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○MXalt2.aspmx.l.google.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○MXaspmx.l.google.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○MXaspmx2.googlemail.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○MXaspmx3.googlemail.com2015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52
○A50.63.202.452015-06-11 → 2018-12-13 · 4 obs
● 2015-06-11 11:40:24
● 2018-12-13 11:08:18
○ 2026-03-27 22:54:14
○ 2026-03-29 22:41:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net...-
checkrecipientapp.comns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.net, pdns99.ultradns.com...6 records

✅ Authoritative Response

Server:156.154.66.99

NS records: ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.net, pdns99.ultradns.com, pdns99.ultradns.biz, pdns99.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for checkrecipientapp.com (unsigned zone)

⏱️ Timing

Total: 312ms | Queries: -

📄 Records

TypeCountSample Data
NS6ns1.proofpoint.com, ns3.proofpoint.com...
SOA1ns1.proofpoint.com ops.proofpoint.com

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.proofpoint.com, ns1.proofpoint.com, ns3.proofpoint.com...)

Analysis

Name Servers

checkrecipientapp.com delegates to six name servers: pdns99.ultradns.biz, ns1.proofpoint.com, ns3.proofpoint.com, pdns99.ultradns.com, pdns99.ultradns.net and pdns99.ultradns.org.

checkrecipientapp.com at least partially shares name servers with other domains such as guardianmailrelay.com, spamnet.org, employflorida.org, modernsportingrifle.org and 216-185-26-197.zuckerman.com.

these name servers are commonly used with the name servers infoblox-sc4.ppops.net.

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.