🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`presortfirstclass.com`

DNSSEC	⚠️ Not signed
A	35.173.145.203^{🇺🇸 Amazon35.168.0.0/13 EC2 IAD prefix}
		PTR	`aegir32.worxco.net`
NS	`ns-95.awsdns-11.com` ⭐
		A	2600:9000:5300:5f00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-95.awsdns-11.com`
		A	205.251.192.95^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-95.awsdns-11.com`
NS	`ns-1145.awsdns-15.org`
		A	2600:9000:5304:7900::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1145.awsdns-15.org`
		A	205.251.196.121^{🇺🇸 Amazon205.251.196.0/24 prefix}
NS	`ns-1796.awsdns-32.co.uk`
		A	2600:9000:5307:400::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1796.awsdns-32.co.uk`
		A	205.251.199.4^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1796.awsdns-32.co.uk`
NS	`ns-633.awsdns-15.net`
		A	2600:9000:5302:7900::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-633.awsdns-15.net`
		A	205.251.194.121^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-633.awsdns-15.net`
MX	`presortfirstclass-com.mail.eo.outlook.com` ⭐
		A	2a01:111:f403:f802::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01403.inbound.protection.outlook.com`
		A	2a01:111:f403:f805::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr03cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mn2pr02cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:f90f::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sa9pr04cu00201.inbound.protection.outlook.com`
		A	52.101.11.7^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sa9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.41.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01702.inbound.protection.outlook.com`
		A	52.101.41.28^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01504.inbound.protection.outlook.com`
		A	52.101.194.0^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00200.inbound.protection.outlook.com`
TXT	`google-site-verification=nLNTkaiElIbk0iQO9rJqISRNaZRSrd3qPjBNd8vU5-s`
TXT	`v=spf1 include:spf.protection.outlook.com include:spf.bbcsoftware.com include...`
SOA	`ns-95.awsdns-11.com`awsdns-hostmaster@amazon.com 2019-10-14 #5

`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.net`nstld@verisign-grs.com serial=1787058504

Same first word

presortfirstclass.com

Previous names

Next names

DNS History

13 records (6 active, 7 former)

●NSns-1145.awsdns-15.org2016-04-28 → 2026-08-18 · 3 obs

○ 2016-01-18 19:12:16
● 2016-04-28 16:42:46
● 2026-08-18 13:31:04

●NSns-1796.awsdns-32.co.uk2016-04-28 → 2026-08-18 · 3 obs

○ 2016-01-18 19:12:16
● 2016-04-28 16:42:46
● 2026-08-18 13:31:04

●NSns-633.awsdns-15.net2016-04-28 → 2026-08-18 · 3 obs

○ 2016-01-18 19:12:16
● 2016-04-28 16:42:46
● 2026-08-18 13:31:04

●NSns-95.awsdns-11.com2016-04-28 → 2026-08-18 · 3 obs

○ 2016-01-18 19:12:16
● 2016-04-28 16:42:46
● 2026-08-18 13:31:04

○NSns01.hostsofamerica.com2015-05-21 → 2016-01-18 · 4 obs

● 2015-05-21 08:20:28
● 2016-01-18 19:12:16
○ 2016-04-28 16:42:46
○ 2026-08-18 13:31:04

○NSns02.hostsofamerica.com2015-05-21 → 2016-01-18 · 4 obs

● 2015-05-21 08:20:28
● 2016-01-18 19:12:16
○ 2016-04-28 16:42:46
○ 2026-08-18 13:31:04

○MXmail.presortfirstclass.com2015-05-21 → 2017-03-20 · 4 obs

● 2015-05-21 08:20:28
● 2017-03-20 12:42:56
○ 2026-06-28 10:28:46
○ 2026-08-18 13:31:04

●MXpresortfirstclass-com.mail.eo.outlook.com2026-06-28 → 2026-08-18 · 3 obs

○ 2017-03-20 12:42:56
● 2026-06-28 10:28:46
● 2026-08-18 13:31:04

●A35.173.145.2032026-06-28 → 2026-08-18 · 3 obs

○ 2017-03-20 12:42:56
● 2026-06-28 10:28:46
● 2026-08-18 13:31:04

○A65.64.82.1082015-10-23 → 2017-03-20 · 5 obs

○ 2015-05-21 08:20:28
● 2015-10-23 18:36:40
● 2017-03-20 12:42:56
○ 2026-06-28 10:28:46
○ 2026-08-18 13:31:04

○A65.64.82.1092017-03-20 → 2017-03-20 · 4 obs

○ 2015-10-23 18:36:40
● 2017-03-20 12:42:56
○ 2026-06-28 10:28:46
○ 2026-08-18 13:31:04

○A65.64.82.1102017-03-20 → 2017-03-20 · 4 obs

○ 2015-10-23 18:36:40
● 2017-03-20 12:42:56
○ 2026-06-28 10:28:46
○ 2026-08-18 13:31:04

○A65.64.85.2012015-05-21 → 2015-05-21 · 3 obs

● 2015-05-21 08:20:28
○ 2015-10-23 18:36:40
○ 2026-08-18 13:31:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
presortfirstclass.com	ns-95.awsdns-11.com, ns-633.awsdns-15.net, ns-1145.awsdns-15.org, ns-1796.awsdns-32.co.uk	2 records

✅ Authoritative Response

Server:205.251.192.95

NS records: ns-95.awsdns-11.com, ns-633.awsdns-15.net, ns-1145.awsdns-15.org, ns-1796.awsdns-32.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for presortfirstclass.com (unsigned zone)

⏱️ Timing

Total: 949ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`35.173.145.203`
NS	4	`ns-1145.awsdns-15.org, ns-1796.awsdns-32.co.uk...`
MX	1	`presortfirstclass-com.mail.eo.outlook.co`
TXT	2	`google-site-verification=nLNTkaiElIbk0iQ, v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns-95.awsdns-11.com awsdns-hostmaster.am`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-95.awsdns-11.com, ns-95.awsdns-11.com)

Analysis

IP Addresses

presortfirstclass.com directs to one IP number, which is 35.173.145.203.

Among the host names that share IP numbers with presortfirstclass.com are coatpro.biz, aeternitasinc.com, kiowatribe.org and two others.

Name Servers

The domain presortfirstclass.com is delegated to these four name servers: ns-95.awsdns-11.com, ns-633.awsdns-15.net, ns-1145.awsdns-15.org and ns-1796.awsdns-32.co.uk.

At least some of presortfirstclass.com's name servers are shared with other domains, for example d229ttrfvxhmux.cloudfront.net, dirtconditions.com, sega-crm-analytics.jp and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-95.awsdns-11.com directs to 205.251.192.95 and 2600:9000:5300:5f00::1; ns-633.awsdns-15.net directs to 205.251.194.121 and 2600:9000:5302:7900::1; ns-1145.awsdns-15.org directs to 205.251.196.121 and 2600:9000:5304:7900::1; ns-1796.awsdns-32.co.uk directs to 205.251.199.4 and 2600:9000:5307:400::1.

Mail Servers

presortfirstclass.com routes its mail through a single mail server, presortfirstclass-com.mail.eo.outlook.com.

presortfirstclass-com.mail.eo.outlook.com directs to 8 IP numbers, including 52.101.11.7, 52.101.41.26 and 52.101.41.28, along with 5 other.

presortfirstclass.com - robtex.com