ASN AS40138 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS40138?

AS40138 is listed under Mach Dilemma, LLC.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS40138 Mach Dilemma, LLC | IPGeolocation.io

ASN Lookup Tool

Mach Dilemma, LLC m-d.net

US 56 Routes

AS Data

AS40138

AS40138 – Mach Dilemma, LLC

AS Number	40138
AS Name	MDNET
Organization	Mach Dilemma, LLC (mdl-43)
Country	US
Website	m-d.net
Number of IPv4 Routes	11
Number of IPv6 Routes	45
ASN type	ISP
Registry	ARIN
Date Allocated	2014-04-24

ASN Intelligence API for production workflows

Use ASN data for AS40138 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
44.30.92.0/24	AS40138	Mach Dilemma, LLC	Amateur Radio Digital Communications	256
103.196.37.0/24	AS40138	Mach Dilemma, LLC	Michael Damm	256
2402:e580:73f0::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
103.196.36.0/23	AS40138	Mach Dilemma, LLC	Michael Damm	512
2402:e580:74ba::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
2402:e580:789c::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
2402:e580:74b1::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
2402:e580:744e::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
2402:e580:74b9::/48	AS40138	Mach Dilemma, LLC	Michael Damm	~1×10²⁴
2620:95:4001::/48	AS40138	Mach Dilemma, LLC	Mach Dilemma, LLC	~1×10²⁴

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       40138
ASName:         MDNET
ASHandle:       AS40138
RegDate:        2014-04-24
Updated:        2024-04-05
Comment:        Geofeed https://opengeofeed.org/feed/as40138.csv
Ref:            https://rdap.arin.net/registry/autnum/40138


OrgName:        Mach Dilemma, LLC
OrgId:          MDL-43
Address:        PO Box 3006
City:           Walnut Creek
StateProv:      CA
PostalCode:     94598-0006
Country:        US
RegDate:        2014-04-15
Updated:        2024-10-29
Ref:            https://rdap.arin.net/registry/entity/MDL-43

ReferralServer:  rwhois://rwhois.md.vc:4321

OrgAbuseHandle: DAMMM2-ARIN
OrgAbuseName:   Damm, Mike 
OrgAbusePhone:  +1-415-683-6453 
OrgAbuseEmail:  noc@m-d.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DAMMM2-ARIN

OrgTechHandle: DAMMM2-ARIN
OrgTechName:   Damm, Mike 
OrgTechPhone:  +1-415-683-6453 
OrgTechEmail:  noc@m-d.net
OrgTechRef:    https://rdap.arin.net/registry/entity/DAMMM2-ARIN

OrgNOCHandle: DAMMM2-ARIN
OrgNOCName:   Damm, Mike 
OrgNOCPhone:  +1-415-683-6453 
OrgNOCEmail:  noc@m-d.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/DAMMM2-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "40138",
    "as_handle" : "AS40138",
    "as_name" : "MDNET",
    "tech_contacts" : [ "DAMMM2-ARIN" ],
    "abuse_contacts" : [ "DAMMM2-ARIN" ],
    "date_created" : "2014-04-24",
    "date_updated" : "2024-04-05",
    "source" : "https://rdap.arin.net/registry/autnum/40138"
  } ],
  "organization" : {
    "handle" : "MDL-43",
    "name" : "Mach Dilemma, LLC",
    "address" : [ "PO Box 3006", "Walnut Creek", "CA", "94598-0006", "US" ],
    "city" : "Walnut Creek",
    "state" : "CA",
    "zip_code" : "94598-0006",
    "country" : [ "US" ],
    "date_created" : "2014-04-15",
    "date_updated" : "2024-10-29",
    "source" : "https://rdap.arin.net/registry/entity/MDL-43",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "DAMMM2-ARIN",
    "name" : "Damm, Mike",
    "email" : [ "noc@m-d.net" ],
    "phone" : [ "+1-415-683-6453" ],
    "source" : "https://rdap.arin.net/registry/entity/DAMMM2-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "DAMMM2-ARIN",
    "name" : "Damm, Mike",
    "email" : [ "noc@m-d.net" ],
    "phone" : [ "+1-415-683-6453" ],
    "source" : "https://rdap.arin.net/registry/entity/DAMMM2-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS58057	Securebit AG	CH
AS393577	Tritan Development	US
AS401703	Ordinal Advisors LLC	US
AS6939	Hurricane Electric LLC	US
AS53343	sc Network	US
AS3130	RGnet OU	EE
AS53597	Hoyos Consulting LLC	US
AS210667	Adam Goodenough	GB
AS199918	Wilton Arthur Poth	DE
AS56662	Marcin Gondek	PL

Upstreams

AS Number	Description	Country
AS212024	Marc Schmitt	FR
AS58057	Securebit AG	CH
AS394256	Tech Futures Interactive Inc.	CA
AS36236	NetActuate, Inc	US
AS53356	Free Range Cloud Hosting Inc.	CA
AS47787	EDGOO NETWORKS UNIPESSOAL LDA	PT
AS6939	Hurricane Electric LLC	US
AS20473	The Constant Company, LLC	US
AS8298	IPng Networks GmbH	CH
AS137409	GSL Networks Pty LTD	AU