mx4.x.com - dns.ninja

`mx4.x.com`

DNSSEC	⚠️ Not signed
A	199.16.156.115^{🇺🇸 AS13414199.16.156.0/23}
		PTR	`mx4.twitter.com`

`x.com`

	DNSSEC	⚠️ Not signed
	A	172.66.0.227^{🇺🇸 Cloudflare172.66.0.0/22 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
	NS	`a.u10.twtrdns.net` ⭐
	NS	`a.r10.twtrdns.net`
	NS	`b.r10.twtrdns.net`
	NS	`b.u10.twtrdns.net`
	NS	`c.r10.twtrdns.net`
	NS	`c.u10.twtrdns.net`
	NS	`d.r10.twtrdns.net`
	NS	`d.u10.twtrdns.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`3089463`
	TXT	`_w548xs1kfxtlqk3jyx19bzwk34c473i`
	TXT	`adobe-idp-site-verification=ab4d9ce3473a73e81f46238da34ea4967fd5ac80e5c43fbfa...`
	TXT	`adobe-sign-verification=c693a744ee2d282a36a43e6e724c5ea`
	TXT	`apple-domain-verification=sEij6tJOW11fVNrG`
	TXT	`atlassian-domain-verification=j6u0o1PTkobCXC84uEF/sWpIPtaZURBVYqKzmTvT8wugLcH...`
	TXT	`atlassian-sending-domain-verification=bd424180-8645-4de5-bd6a-285479c7577a`
	TXT	`central-10416`
	TXT	`figma-domain-verification=ee8420edd01965ba297f3438c907cfc6fbbaa1ee90a07b28f28...`
	TXT	`google-site-verification=8yQmoVhQedzlt36RPeQP41ytrEFk9aHEnde_xm0626g`
	TXT	`google-site-verification=BT51mebIp7CbI7Qy_5Qg6LJLSBrLuCGQ_oznVAgfgKA`
	TXT	`google-site-verification=F6u9mGL--d2lbLljvH3b1UUgXtevQPdcamKr9c8914A`
	TXT	`google-site-verification=isX7U92-gLht5aKvjaPvQ9tWaxoqREy8agpAOcqlfIE`
	TXT	`google-site-verification=lEZNYWieV7-UbDJafAm0u_RvNFb7GGqIYWAP4JmG5qs`
	TXT	`google-site-verification=rbRGYlOADDbtUYJTGd8GEDm0PwPZExviDSaSH4JLR8Q`
	TXT	`google-site-verification=reUF-TgZq93ZGtzImw42sfYglI2hY0QiGRmfc4jeKbs`
	TXT	`kkdl3qb3tcrmdhfsm803p67r0my0svs8`
	TXT	`shopify-verification-code=cUZazKrqCWgcshrcGvgfFR1lieuhRF`
	TXT	`slack-domain-verification=Csk4bjCPFnJaDLLaKFUwCTFuUpCVvnYlAm2Tba0i`
	TXT	`stripe-verification=46F7B88485621DC18923B43D12E90E6CDBCE232F2FEBCF084E6EFA91F...`
	TXT	`v=spf1 ip4:199.16.156.0/22 ip4:199.59.148.0/22 include:_spf.google.com includ...`
	SOA	`a.u10.twtrdns.net`noc@twitter.com 2023-12-12 #1

rank #17 globally
rank #12 in the tld

x.com

x.comis the primary domain of X (formerly Twitter), the social media platform owned by X Corp. and operated under Elon Musk's leadership.twitter.comnow redirects here.

Key facts

Owner / operator: X Corp. (Elon Musk)
TLD:.com— gTLD
Primary purpose: Social media platform (posts, video, direct messaging, livestreaming)
Status: Active

History

Year	Event
1999	Elon Musk founds X.com as an online financial-services company
2000	X.com merges with Confinity (creator of PayPal); the PayPal brand eventually wins out
2001	X.com brand retired; domain dormant under PayPal/eBay ownership
2017	Musk repurchases the`x.com`domain from PayPal for sentimental/strategic reasons
2022	Musk acquires Twitter, Inc. in October for ~$44 billion
2023	Twitter rebrands as X in July;`x.com`becomes the canonical domain;`twitter.com`redirects to it

Related domains

twitter.com— legacy domain; now a redirect alias tox.com
t.co— URL shortener used by X for all links posted on the platform

Semrush Rank:#14 Keywords:51,930,954 Traffic:183,779,901/mo
WOT: SAFE (87/100)
📈 Tranco rank: #53

X (formerly Twitter)

X is a global social media and microblogging platform where users share short posts (formerly called "tweets"), engage in public conversations, and connect with others in real-time. The platform serves as a major hub for news, public discourse, entertainment, and direct communication between individuals, organizations, and public figures.

Key Features

Posts: Short-form text updates with support for images, videos, and links
Spaces: Live audio conversation rooms for real-time discussions
Direct Messages: Private messaging between users and groups
Lists: Curated feeds of accounts organized by topic or interest
Communities: Dedicated spaces for groups with shared interests
Creator Tools: Monetization features including subscriptions and revenue sharing

History and Ownership

Twitter was founded in 2006 by Jack Dorsey, Noah Glass, Biz Stone, and Evan Williams. The platform became one of the world's most influential social networks, known for its role in breaking news and public discourse. In October 2022, Elon Musk acquired the company for approximately $44 billion. In July 2023, the platform was rebranded from Twitter to X, with the company now operating as X Corp. The rebrand reflected Musk's vision of transforming the platform into an "everything app" offering expanded services beyond social networking.

Developer Access

X provides API access for developers across multiple tiers (Free, Basic, Pro, and Enterprise), enabling programmatic access to posts, user data, direct messages, and platform analytics for building integrations and applications.

MX for

email.x.com

bounce.x.com

Same first word

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4xm.de

DNS History

1 record (1 active, 0 former)

●A199.16.156.1152026-02-23 → 2026-07-16 · 2 obs

● 2026-02-23 21:17:30
● 2026-07-16 12:36:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, d.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net...	-
x.com	a.u10.twtrdns.net, b.u10.twtrdns.net, c.u10.twtrdns.net, d.u10.twtrdns.net...	-

✅ Authoritative Response

Server:205.251.194.151

NS records: a.u10.twtrdns.net, b.u10.twtrdns.net, c.u10.twtrdns.net, d.u10.twtrdns.net, a.r10.twtrdns.net, b.r10.twtrdns.net, c.r10.twtrdns.net, d.r10.twtrdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for x.com (unsigned zone)

⏱️ Timing

Total: 1983ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`199.16.156.115`

Analysis

Mail Server Role

mx4.x.com is the mail server for email.x.com and bounce.x.com.

As mail servers, mx3.x.com and mx4.x.com are regularly found together.

IP Addresses

mx4.x.com directs to one IP number, which is 199.16.156.115.

events.twitter.com, mx4.twitter.com and mail-in.twitter.com are examples of other host names that share IP numbers with mx4.x.com.