Autonomous System details

AS151847

Fastmail Pty Ltd  ·  fastmail.com

Australia

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AS151847 – Fastmail Pty Ltd

Field Value
Country Australia
Website fastmail.com
Hosted domains 54,955
IPv4 addresses 512
IPv6 addresses 1,208,925,819,614,629,174,706,176
ASN type Hosting
Registry apnic
Allocated 2 years ago on Oct 06, 2023
Updated 4 months ago on Nov 05, 2025

IP Ranges

Netblock Company Num of IPs
103.168.172.0/24 Fastmail Pty Ltd t/a Fastmail 256
202.12.124.0/24 Fastmail Pty Ltd 256
Netblock Company
2001:df7:1680::/48 Fastmail Pty Ltd
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WHOIS Details

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                                                ASHandle:       AS151847
                                                OrgID:          AS151847
                                                ASName:         AS151847
                                                ASNumber:       AS151847
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 54,955 domain names hosted across 34 IP addresses on this ASN.

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IP Address Domain Domains on this IP
103.168.172.37 ██████████ 51,855
103.168.172.52 ██████████ 49,245
103.168.172.65 ██████████ 162
103.168.172.39 ██████████ 55
103.168.172.54 ██████████ 47
103.168.172.29 ██████████ 13
103.168.172.45 ████████ 12
103.168.172.60 ████████ 12
103.168.172.62 ██████████ 11
103.168.172.47 ██████████ 11

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Peers

There are 3 peers for this ASN.

Peers Name
AS13335 Cloudflare, Inc.
AS1828 Unitas Global
AS6939 Hurricane Electric LLC
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS13335 Cloudflare, Inc.
AS1828 Unitas Global
AS6939 Hurricane Electric LLC
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Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

3 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
202.12.124.145 AS151847 Fastmail Pty Ltd 0.20ms from St. Louis, US
103.168.172.199 AS151847 Fastmail Pty Ltd 0.39ms from Philadelphia, US
2001:df7:1680::1 AS151847 Fastmail Pty Ltd 3.01ms from New York City, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
77.170.215.55 AS1136 KPN B.V. 3.30ms from Amsterdam, NL
101.51.2.183 AS23974 Ministry of education 1.51ms from Bangkok, TH
119.7.173.103 AS4837 CHINA UNICOM China169 Backbone 5.87ms from Chengdu, CN
3.148.42.119 AS16509 Amazon.com, Inc. 0.78ms from Columbus, US
138.19.3.87 AS9269 Hong Kong Broadband Network Ltd. 1.66ms from Hong Kong, HK
180.134.160.183 AS9644 SK Telecom 3.15ms from Incheon, KR
148.71.3.55 AS12353 Vodafone Portugal 2.08ms from Lisbon, PT
79.18.242.183 AS3269 Telecom Italia S.p.A. 7.80ms from Milan, IT
79.56.202.55 AS3269 Telecom Italia S.p.A. 6.51ms from Milan, IT
126.108.57.151 AS17676 SoftBank Corp. 2.18ms from Osaka, JP
126.207.65.39 AS17676 SoftBank Corp. 3.49ms from Osaka, JP
62.85.15.55 AS12578 SIA Tet 0.70ms from Riga, LV
95.250.9.23 AS3269 Telecom Italia S.p.A. 5.45ms from Rome, IT
177.241.197.7 AS13999 Mega Cable, S.A. de C.V. 13.88ms from Santiago de Querétaro, MX
67.182.159.119 AS7922 Comcast Cable Communications, LLC 6.58ms from Seattle, US
222.97.50.103 AS4766 Korea Telecom 6.58ms from Seoul, KR
117.73.13.119 AS23724 IDC, China Telecommunications Corporation 2.63ms from Tianjin, CN
113.40.97.167 AS17506 ARTERIA Networks Corporation 1.69ms from Tokyo, JP
99.251.109.23 AS812 Rogers Communications Canada Inc. 6.04ms from Toronto, CA
61.185.224.167 AS4134 CHINANET-BACKBONE 1.78ms from Xi'an, CN
34.226.177.55 AS14618 Amazon.com, Inc. 0.43ms from Ashburn, US
134.245.33.135 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 7.36ms from Berlin, DE
117.247.117.231 AS9829 National Internet Backbone 14.79ms from Chennai, IN
34.29.218.151 AS396982 Google LLC 0.11ms from Council Bluffs, US
129.114.38.151 AS32093 University of Texas at Austin 6.32ms from Dallas, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f2 103.168.172.119
traceroute to 103.168.172.119 (103.168.172.119): 64 hops max, 52 byte packets
2 [] 206.51.7.5 0.633 ms
3 *
6 *
Measurement taken from IPinfo ProbeNet in Kansas City, US
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS151847 at robtex.

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