Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS54038
CALLIDUS-SOFTWARE - Callidus Software Inc. Announcing routesAS nameCALLIDUS-SOFTWARE
OrganisationCallidus Software Inc.
Registry (RIR)ARIN
HandleAS54038
RangeAS54038
Registered14 Sep 2011
Last changed31 Mar 2020
Abuse contact[email protected]
10IPv4 prefixes
0IPv6 prefixes
2Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS19893 | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 262 |
| AS393423 | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 261 |
Downstreams
None seen.
IPv4 prefixes (10)
RPKI-validate all prefixes of AS54038
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Callidus Software Inc. | CS-25 | 4140 Dublin Blvd. , Suite 400, Dublin, CA, 94568, United States | |
| abuse, technical, administrative | Matthias Braun | MB1563-ARIN | [email protected], +49 6227 7 47474, +49 6227 7 57575 | Dietmar-Hopp-Allee 16, Walldorf, , D-69190, Germany |
Raw registry response
{
"endAutnum": 54038,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-02-11T08:28:22-05:00"
},
{
"eventAction": "registration",
"eventDate": "2001-04-30T10:29:46-04:00"
}
],
"handle": "MB1563-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MB1563-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/54038"
},
{
"href": "https://whois.arin.net/rest/poc/MB1563-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/54038"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "Dietmar-Hopp-Allee 16\nWalldorf\n\nD-69190\nGermany"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Matthias Braun"
],
[
"n",
[],
"text",
[
"Braun",
"Matthias",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+49 6227 7 47474"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+49 6227 7 57575"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2020-03-26T05:59:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-05-25T15:52:32-04:00"
}
],
"handle": "CS-25",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CS-25",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/54038"
},
{
"href": "https://whois.arin.net/rest/org/CS-25",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/54038"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Callidus Software Inc."
],
[
"adr",
{
"label": "4140 Dublin Blvd.\r\nSuite 400\nDublin\nCA\n94568\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2020-03-31T12:16:13-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-09-14T12:19:41-04:00"
}
],
"handle": "AS54038",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/54038",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/54038"
},
{
"href": "https://whois.arin.net/rest/asn/AS54038",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/54038"
}
],
"name": "CALLIDUS-SOFTWARE",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/54038"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/54038"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 54038,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.