cd.usps.com - dns.ninja

`cd.usps.com`

DNSSEC	⚠️ Not signed
A	56.0.47.32^{🇺🇸 AS577456.0.32.0/20}
NS	`eagnmn-b2b-adns.usps.com` ⚠️ Not in zone NS records
		A	56.0.46.6^{🇺🇸 AS577456.0.32.0/20}
			PTR	`eagnmn-b2b-adns.usps.com`

`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	`m8gzt1kxn0b8hm22m2154p7dgkwrqllc`
	TXT	`MS=ms75843013`
	TXT	`t5cmxmtc9bsyn3lnh9cp61w7zl6p9dmh`
	TXT	`5gnbvs23tq9vmq20zmtgsydzs39qpksb`
	TXT	`MS=891EBC03C14DB5081F9801A66F922A606978EBD3`
	TXT	`xh9xzqypj83py3z3049hr39d5m75sffn`
	TXT	`v=spf1 ip4:56.0.0.0/16 -all`
	TXT	`wbbcfpqr2lfkgls6hh8gtxrn3y16p7yx`
	TXT	`google-site-verification=g8v2m4CGzjzeR7BlXEWdkPw_Vee3KLd5Msu1oxq9X4Y`
	TXT	`apple-domain-verification=1mTpTvcYUbpLD2DCGn6S7e8E7GNEuCbLmsnOVoINlXk`
	SOA	`dns141.usps.com`domainadmin@imail.usps.gov serial=711473896

WOT: SAFE (94/100)
rank #964 globally
rank #534 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)

Semrush Rank:#42 Keywords:5,141,673 Traffic:57,840,925/mo
WOT: SAFE (94/100)
📈 Tranco rank: #834

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

2 records (2 active, 0 former)

●NSeagnmn-b2b-adns.usps.com2026-05-20 → 2026-06-04 · 2 obs

● 2026-05-20 22:51:12
● 2026-06-04 09:55:46

●A56.0.47.322018-07-25 → 2026-06-04 · 2 obs

● 2018-07-25 03:47:18
● 2026-06-04 09:55:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
usps.com	dns141.usps.com, dns082.usps.com	2 records
cd.usps.com	eagnmn-b2b-adns.usps.com	-

✅ Authoritative Response

Server:56.0.46.6

NS records: eagnmn-b2b-adns.usps.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usps.com (unsigned zone)

⏱️ Timing

Total: 2376ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`56.0.47.32`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

cd.usps.com directs to one IP number, which is 56.0.47.32.

Name Servers

cd.usps.com is served by a sole authoritative name server: eagnmn-b2b-adns.usps.com.

cd.usps.com and partner.usps.com are among domains that share the same name servers.

The name servers for cd.usps.com overlap at least partially with those of other domains — for example sftp.usps.com.

These name servers tend to be used in conjunction with the name servers samtca-b2b-adns.usps.com.

eagnmn-b2b-adns.usps.com points to one IP number — 56.0.46.6.