link.usps.com - dns.ninja

`link.usps.com`

DNSSEC	⚠️ Not signed
A	141.193.213.10^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
A	141.193.213.11^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
MX	`mxa-0038fd02.gslb.gpphosted.com` ⭐
		A	66.159.228.37^{🇺🇸 Proofpoint66.159.228.0/24 Inc.}
			PTR	`mx0f-0038fd02.gpphosted.com`
MX	`mxb-0038fd02.gslb.gpphosted.com` ⭐
		A	66.159.227.37^{🇺🇸 Proofpoint66.159.227.0/24 Inc.}
			PTR	`mx0e-0038fd02.gpphosted.com`
TXT	`v=spf1 include:servers.mcsv.net -all`

`usps.com`

	DNSSEC	⚠️ Not signed
	A	56.0.134.100^{🇺🇸 AS577456.0.128.0/19}
	NS	`dns141.usps.com` ⭐
	NS	`dns082.usps.com`
	MX	`mxa-0038fd02.gslb.gpphosted.com` ⭐
	MX	`mxb-0038fd02.gslb.gpphosted.com` ⭐
	TXT	`U0S4P86940`
	TXT	`apple-domain-verification=1mTpTvcYUbpLD2DCGn6S7e8E7GNEuCbLmsnOVoINlXk`
	TXT	`MS=ms75843013`
	TXT	`t5cmxmtc9bsyn3lnh9cp61w7zl6p9dmh`
	TXT	`v=spf1 ip4:56.0.0.0/16 -all`
	TXT	`MS=891EBC03C14DB5081F9801A66F922A606978EBD3`
	TXT	`xh9xzqypj83py3z3049hr39d5m75sffn`
	TXT	`m8gzt1kxn0b8hm22m2154p7dgkwrqllc`
	TXT	`5gnbvs23tq9vmq20zmtgsydzs39qpksb`
	TXT	`google-site-verification=g8v2m4CGzjzeR7BlXEWdkPw_Vee3KLd5Msu1oxq9X4Y`
	TXT	`wbbcfpqr2lfkgls6hh8gtxrn3y16p7yx`
	SOA	`dns141.usps.com`domainadmin@imail.usps.gov serial=711473924

WOT: SAFE (94/100)
rank #985 globally
rank #540 in the tld

usps.com

usps.comis the official website of the United States Postal Service (USPS), an independent agency of the U.S. federal government responsible for postal delivery across the United States and its territories.

Key facts

Owner / operator: United States Postal Service (USPS)
TLD:.com— gTLD
Primary purpose: Official public-facing portal for postal services — package tracking, mail delivery, postage purchasing, and business services
Status: Active

Notable subdomains or services

tools.usps.com— ZIP code lookup, service standards, and shipping tools
informeddelivery.usps.com— Informed Delivery service (daily email digest of incoming mail images)
postcalc.usps.com— postage price calculator
about.usps.com— corporate/newsroom information

Related domains

usps.gov— redirects tousps.com; USPS uses.comrather than.govbecause it operates as a self-funding independent agency, not a traditional government department
postalinspectors.uspis.gov— U.S. Postal Inspection Service (law-enforcement arm, separate domain)

WOT: SAFE (94/100)
📈 Tranco rank: #1,163

United States Postal Service

usps.com is the official website of the United States Postal Service (USPS), an independent agency of the U.S. federal government and one of the world's largest postal organizations. Operating continuously since 1775, USPS delivers mail and packages to over 160 million addresses across the United States and its territories.

Services

Mail Services: First-Class Mail, Priority Mail, Priority Mail Express, USPS Ground Advantage
Digital Tools: Click-N-Ship label printing, Informed Delivery (digital mail previews), package tracking
Retail Products: Stamps, PO Box rentals, money orders, passport services
Business Solutions: Bulk mailing, commercial shipping rates, pickup scheduling

Technical Infrastructure

Type	Details
IP Address	56.0.134.100
AS Number	AS5774 (USPS-AS)
Nameservers	dns141.usps.com, dns082.usps.com (self-hosted on 56.0.0.0/8)
Mail	Proofpoint-hosted (mxa/mxb-0038fd02.gslb.gpphosted.com)
DNSSEC	Not signed
SPF	Strict (-all) limiting to 56.0.0.0/16

USPS operates its own IP allocation (56.0.0.0/8, one of the few Class A blocks held by government entities) and self-hosts its authoritative DNS infrastructure, while outsourcing email security to Proofpoint.

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DNS History

7 records (4 active, 3 former)

○MXgk-c-mail.srvs.usps.gov2016-12-21 → 2016-12-21 · 3 obs

● 2016-12-21 06:41:26
○ 2026-04-04 21:42:44
○ 2026-07-31 13:35:14

○MXgk-w-mail.srvs.usps.gov2016-12-21 → 2016-12-21 · 3 obs

● 2016-12-21 06:41:26
○ 2026-04-04 21:42:44
○ 2026-07-31 13:35:14

●MXmxa-0038fd02.gslb.gpphosted.com2026-04-04 → 2026-07-31 · 3 obs

○ 2016-12-21 06:41:26
● 2026-04-04 21:42:44
● 2026-07-31 13:35:14

●MXmxb-0038fd02.gslb.gpphosted.com2026-04-04 → 2026-07-31 · 3 obs

○ 2016-12-21 06:41:26
● 2026-04-04 21:42:44
● 2026-07-31 13:35:14

○A104.196.103.2092016-12-21 → 2016-12-21 · 3 obs

● 2016-12-21 06:41:26
○ 2026-04-04 21:42:44
○ 2026-07-31 13:35:14

●A141.193.213.102026-04-04 → 2026-07-31 · 3 obs

○ 2016-12-21 06:41:26
● 2026-04-04 21:42:44
● 2026-07-31 13:35:14

●A141.193.213.112026-04-04 → 2026-07-31 · 3 obs

○ 2016-12-21 06:41:26
● 2026-04-04 21:42:44
● 2026-07-31 13:35:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, b.gtld-servers.net, d.gtld-servers.net, i.gtld-servers.net...	-
usps.com	dns141.usps.com, dns082.usps.com	2 records

✅ Authoritative Response

Server:56.0.82.25

NS records: dns141.usps.com, dns082.usps.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usps.com (unsigned zone)

⏱️ Timing

Total: 281ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`141.193.213.11, 141.193.213.10`
MX	2	`mxb-0038fd02.gslb.gpphosted.com (pri: 10, mxa-0038fd02.gslb.gpphosted.com (pri: 10`
TXT	1	`v=spf1 include:servers.mcsv.net -all`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (dns141.usps.com, dns082.usps.com)

Analysis

IP Addresses

link.usps.com resolves to the IP addresses 141.193.213.10 and 141.193.213.11

Additional host names — rxtoolkit.com, collbox.co, buttermobile.com and two others — share IP numbers with link.usps.com.

Mail Servers

link.usps.com has two mail servers: mxa-0038fd02.gslb.gpphosted.com and mxb-0038fd02.gslb.gpphosted.com.

link.usps.com shares the same mail server setup as other domains, including media.usps.com, shippingonline.com, shippingapi.com and two others.

mxa-0038fd02.gslb.gpphosted.com resolves to 66.159.228.37. mxb-0038fd02.gslb.gpphosted.com resolves to 66.159.227.37. Both host names point to a single IP number.