AS151847 Fastmail Pty Ltd 🇦🇺 AU

Fastmail. Announcing 8 prefixes, seen at the RIS collectors.

IPv4 prefixes

1,024 (4 × /24)

IPv6 prefixes

16,384 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS151847
Name: Fastmail Pty Ltd
Organisation: FASTMAILPTYLTD-AS-AP
Country: 🇦🇺 AU
RIR: APNIC
Allocated: 2023-10-06
Network type: Enterprise
Peering policy: Open
Website: https://www.fastmail.com
PeeringDB: net/43998

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

8 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Whois

Fetched from whois.apnic.net

as-block:       AS150842 - AS151865
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2021-10-13T00:52:11Z
source:         APNIC

role:           APNIC Hostmaster
address:        PO Box 3646
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2026-08-26T00:40:00Z
source:         APNIC

aut-num:        AS151847
as-name:        FASTMAILPTYLTD-AS-AP
descr:          Fastmail Pty Ltd
country:        AU
org:            ORG-FA47-AP
admin-c:        FPLA12-AP
tech-c:         FPLA12-AP
abuse-c:        AF708-AP
mnt-lower:      MAINT-FASTMAILPTYLTD-AU
mnt-routes:     MAINT-FASTMAILPTYLTD-AU
mnt-by:         APNIC-HM
mnt-irt:        IRT-FASTMAILPTYLTD-AU
last-modified:  2025-11-05T21:36:26Z
export:         to AS-ANY announce AS151847:AS-ALL
source:         APNIC

irt:            IRT-FASTMAILPTYLTD-AU
address:        Level 2, 114 William Street, Melbourne Victoria 3000
e-mail:         abuse@fastmail.com
abuse-mailbox:  abuse@fastmail.com
admin-c:        FPLA12-AP
tech-c:         FPLA12-AP
auth:           # Filtered
remarks:        abuse@fastmail.com was validated on 2026-05-12
mnt-by:         MAINT-FASTMAILPTYLTD-AU
last-modified:  2026-05-12T13:15:13Z
source:         APNIC

organisation:   ORG-FA47-AP
org-name:       Fastmail Pty Ltd
org-type:       LIR
country:        AU
address:        Level 2, 114 William Street
phone:          +61457416436
e-mail:         apnic@role.fastmailteam.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2026-10-12T13:03:35Z
source:         APNIC

role:           ABUSE FASTMAILPTYLTDAU
country:        ZZ
address:        Level 2, 114 William Street, Melbourne Victoria 3000
phone:          +000000000
e-mail:         abuse@fastmail.com
admin-c:        FPLA12-AP
tech-c:         FPLA12-AP
nic-hdl:        AF708-AP
remarks:        Generated from irt object IRT-FASTMAILPTYLTD-AU
remarks:        abuse@fastmail.com was validated on 2026-05-12
abuse-mailbox:  abuse@fastmail.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-05-12T13:15:35Z
source:         APNIC

role:           Fastmail Pty Ltd administrator
address:        Level 2, 114 William Street, Melbourne Victoria 3000
country:        AU
phone:          +61457416436
e-mail:         abuse@fastmail.com
admin-c:        FPLA12-AP
tech-c:         FPLA12-AP
nic-hdl:        FPLA12-AP
mnt-by:         MAINT-FASTMAILPTYLTD-AU
last-modified:  2021-06-21T02:31:27Z
source:         APNIC