mail.postup.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`mail.postup.com`

DNSSEC	⚠️ Not signed
NS	`ns-1325.awsdns-37.org` ⭐
		A	2600:9000:5305:2d00::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1325.awsdns-37.org`
		A	205.251.197.45^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1325.awsdns-37.org`
NS	`ns-1646.awsdns-13.co.uk`
		A	2600:9000:5306:6e00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1646.awsdns-13.co.uk`
		A	205.251.198.110^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1646.awsdns-13.co.uk`
NS	`ns-52.awsdns-06.com`
		A	2600:9000:5300:3400::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-52.awsdns-06.com`
		A	205.251.192.52^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-52.awsdns-06.com`
NS	`ns-824.awsdns-39.net`
		A	2600:9000:5303:3800::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-824.awsdns-39.net`
		A	205.251.195.56^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-824.awsdns-39.net`
MX	`mail1.mail.postup.com` ⭐
		A	96.46.131.33^{🇺🇸 Amazon96.46.128.0/21 PostUp LLC}
			PTR	`mail1.mail.postup.com`
MX	`mail2.mail.postup.com` ⭐
		A	96.46.131.34^{🇺🇸 Amazon96.46.128.0/21 PostUp LLC}
			PTR	`mail2.mail.postup.com`
MX	`mail3.mail.postup.com` ⭐
		A	96.46.131.35^{🇺🇸 Amazon96.46.128.0/21 PostUp LLC}
			PTR	`mail3.mail.postup.com`
TXT	`google-site-verification=waR3yIuKRrNug70kncp4a62Bx7i9tRQ97w32E0g7PcY`
TXT	`spf2.0/pra,mfrom +mx +ip4:96.46.131.32/30 -all`
TXT	`v=spf1 mx ip4:96.46.131.32/30 -all`
TXT	`yahoo-verification-key=NOd+KGlxxlBRJwhcZB1yosAwvZhMCXWoTPfrLq8dF0I=`
TXT	`yahoo-verification-key=jcn5G2ySUDW2mTV7HrllPZBktW8kRzOOsR3Mji2a8F8=`
TXT	`yahoo-verification-key=ulMZ8YAc2lyD3jhm8t+1aHe5XMIXaYLzedgKrgRuv5k=`
SOA	`ns-1325.awsdns-37.org`awsdns-hostmaster@amazon.com serial=1

`postup.com`

	DNSSEC	⚠️ Not signed
	A	141.193.213.20^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
	A	141.193.213.21^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
	NS	`ns-487.awsdns-60.com` ⭐
	NS	`ns-1388.awsdns-45.org`
	NS	`ns-1858.awsdns-40.co.uk`
	NS	`ns-536.awsdns-03.net`
	MX	`d348576a.ess.barracudanetworks.com` ⭐
	MX	`d348576b.ess.barracudanetworks.com`⁽¹⁰⁾
	TXT	`atlassian-domain-verification=yaT4TKcAtmTCPKlvQWf8kyshPIEzmlEjBuU8aYrdgRaF6wr...`
	TXT	`google-gws-recovery-domain-verification=74360036`
	TXT	`google-site-verification=Ap7LiMiq9yBN__QhTWIKANdynbzpS6yyhcqIfeXngdo`
	TXT	`google-site-verification=thhw_ofdBtVvFXSAfObKs5Ax_Ryw56xWVYpwfNt0LCg`
	TXT	`v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.c...`
	SOA	`ns-487.awsdns-60.com`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (62/100)
WOT: SAFE (75/100)
📈 Tranco rank: #203,891

Subdomains

mail5.mail.postup.com

mail4.mail.postup.com

mail6.mail.postup.com

mail2.mail.postup.com

mail1.mail.postup.com

mail7.mail.postup.com

mail3.mail.postup.com

Same first word

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mail.rip

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mail.gov.zw

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mail.media

mail.vinnica.ua

mail.readymade.jp

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mail.tj

mail.repair

mail.mydissent.net

mail.spdns.org

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mail.od.ua

mail.ms

mail.boleslawiec.pl

mail.mydns.vc

mail.io.in

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mail.kz

mail.im

mail.kaas.gg

mail.it.com

mail.gov.mg

mail.ss

mail.co

mail.tc

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mail.world

mail.pe

mail.sunnyday.jp

mail.group

mail.gov

mail.org.za

mail.mx

mail.cy

mail.supply

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mail.org

mail.pixolino.com

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mail.associates

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mail.vip

mail.red

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mail.pf

mail.com.mx

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mail.gt

mail.com.ly

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mail.com.tw

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mail.mh

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ialm.net

DNS History

22 records (7 active, 15 former)

●NSns-1325.awsdns-37.org2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

●NSns-1646.awsdns-13.co.uk2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

●NSns-52.awsdns-06.com2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

●NSns-824.awsdns-39.net2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

○NSns1.texasdns.com2015-11-03 → 2016-02-01 · 4 obs

● 2015-11-03 04:28:22
● 2016-02-01 10:25:56
○ 2016-05-06 13:02:32
○ 2026-08-17 12:45:06

○NSns10.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns11.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns12.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns13.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns14.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns15.dnsmadeeasy.com2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○NSns2.texasdns.com2015-11-03 → 2016-02-01 · 4 obs

● 2015-11-03 04:28:22
● 2016-02-01 10:25:56
○ 2016-05-06 13:02:32
○ 2026-08-17 12:45:06

○NSns3.texasdns.com2015-11-03 → 2016-02-01 · 4 obs

● 2015-11-03 04:28:22
● 2016-02-01 10:25:56
○ 2016-05-06 13:02:32
○ 2026-08-17 12:45:06

●MXmail1.mail.postup.com2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

●MXmail2.mail.postup.com2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

●MXmail3.mail.postup.com2026-03-24 → 2026-08-17 · 3 obs

○ 2016-07-17 05:07:00
● 2026-03-24 03:27:06
● 2026-08-17 12:45:06

○MXmx.sendgrid.net2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○MXmx2.sendgrid.net2015-11-03 → 2016-07-17 · 4 obs

● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○A167.89.125.302015-11-03 → 2016-07-17 · 5 obs

○ 2015-05-10 10:03:24
● 2015-11-03 04:28:22
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○A198.37.144.922015-05-10 → 2015-05-10 · 3 obs

● 2015-05-10 10:03:24
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○A198.37.144.992015-05-10 → 2015-05-10 · 3 obs

● 2015-05-10 10:03:24
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

○CNAMEsendgrid.net2015-05-10 → 2016-07-17 · 4 obs

● 2015-05-10 10:03:24
● 2016-07-17 05:07:00
○ 2026-03-24 03:27:06
○ 2026-08-17 12:45:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net...	-
postup.com	ns-536.awsdns-03.net, ns-487.awsdns-60.com, ns-1858.awsdns-40.co.uk, ns-1388.awsdns-45.org	2 records
mail.postup.com	ns-1325.awsdns-37.org, ns-1646.awsdns-13.co.uk, ns-52.awsdns-06.com, ns-824.awsdns-39.net	-

✅ Authoritative Response

Server:205.251.192.52

NS records: ns-1325.awsdns-37.org, ns-1646.awsdns-13.co.uk, ns-52.awsdns-06.com, ns-824.awsdns-39.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for postup.com (unsigned zone)

⏱️ Timing

Total: 920ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1325.awsdns-37.org, ns-1646.awsdns-13.co.uk...`
MX	3	`mail1.mail.postup.com (pri: 10), mail2.mail.postup.com (pri: 10)...`
TXT	6	`google-site-verification=waR3yIuKRrNug70, spf2.0/pra,mfrom +mx +ip4:96.46.131.32/3...`
SOA	1	`ns-1325.awsdns-37.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-487.awsdns-60.com, ns-487.awsdns-60.com)

Analysis

Hierarchy

Among the subdomains of mail.postup.com are mail5.mail.postup.com, mail4.mail.postup.com, mail6.mail.postup.com, mail2.mail.postup.com, mail1.mail.postup.com and a few other host names.

Name Servers

Four name servers handle the delegation for mail.postup.com: ns-52.awsdns-06.com, ns-824.awsdns-39.net, ns-1325.awsdns-37.org and ns-1646.awsdns-13.co.uk.

There is at least partial name server overlap between mail.postup.com and other domains — communica.co.nz, bandit.no, contractingengineers.com.au and two more among them.

All four hostnames — ns-52.awsdns-06.com, ns-824.awsdns-39.net, ns-1325.awsdns-37.org and ns-1646.awsdns-13.co.uk — resolve to two IP numbers apiece: ns-52.awsdns-06.com to 205.251.192.52 and 2600:9000:5300:3400::1; ns-824.awsdns-39.net to 205.251.195.56 and 2600:9000:5303:3800::1; ns-1325.awsdns-37.org to 205.251.197.45 and 2600:9000:5305:2d00::1; ns-1646.awsdns-13.co.uk to 205.251.198.110 and 2600:9000:5306:6e00::1.

Mail Servers

Incoming mail for mail.postup.com is delivered via three mail servers: mail1.mail.postup.com, mail2.mail.postup.com and mail3.mail.postup.com.

mail.postup.com and a number of other domains — mail5.mail.postup.com, mail4.mail.postup.com, mail6.mail.postup.com and mail7.mail.postup.com among them — share at least some of the same mail servers.

mail1.mail.postup.com points to 96.46.131.33; mail2.mail.postup.com points to 96.46.131.34; mail3.mail.postup.com points to 96.46.131.35 — each hostname maps to exactly one IP address.