Hostname

mstack.co

Last fetched Fri, 22 May 2026 19:02:15 GMT

mstack.co resolves to 2 IPv4 addresses operated by AMAZON-02 - Amazon.com, Inc. in US. WHOIS lists iana:69 as the registrar.

Nutrition Label

Resolution chain

mstack.co resolves to 2 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
44.252.203.196	44.224.0.0/11	AS16509	AMAZON-02 - Amazon.com, Inc.	US
54.245.155.62	54.245.128.0/17	AS16509	AMAZON-02 - Amazon.com, Inc.	US

WHOIS identity

Registrar: iana:69
Organization: contact privacy inc. customer 0172579092
Contact emails: —

Subdomains

8 observed subdomains of mstack.co.

Subdomain
api.mstack.co
www.mstack.co
tariffiq.mstack.co
prod.mstack.co
pdf-engine-stg.mstack.co
pdf-engine.mstack.co
oauth.mstack.co

Showing 7 of 8. View all subdomains →

Web-graph footprint

Distinct hostnames that link to or from mstack.co in the public web crawl.

10 sites link to this hostname.

Sample inbound links

Threat posture

History

Mail and authentication

MX records

SPF policy

1 SPF mechanism authorising senders for mstack.co.

Mechanism	Target
SPF_INCLUDE	_spf.google.com

Pivot deeper into the graph from mstack.co.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

MATCH (h:HOSTNAME {name: "mstack.co"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
      -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.