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 1,208,925,819,614,629,200,000,000
ASN type Hosting
Registry apnic
Allocated 3 years ago on Oct 06, 2023
Updated 6 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 ██████████ 48,351
103.168.172.52 ██████████ 47,294
103.168.172.65 ██████████ 155
103.168.172.54 ██████████ 49
103.168.172.39 ██████████ 40
103.168.172.60 ████████ 12
103.168.172.45 ████████ 12
103.168.172.62 ██████████ 11
103.168.172.47 ██████████ 11
103.168.172.208 ██████████ 4

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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

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

IP Address ASN Details
202.12.124.195 AS151847 Fastmail Pty Ltd 0.20ms from St. Louis, US
103.168.172.217 AS151847 Fastmail Pty Ltd 2.80ms from Philadelphia, 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
52.116.134.135 AS36351 IBM Cloud 1.06ms from Dallas, US
122.238.171.151 AS4134 CHINANET BACKBONE 8.12ms from Hangzhou, CN
86.136.71.199 AS2856 British Telecommunications PLC 1.96ms from London, GB
67.49.66.215 AS20001 Charter Communications Inc 8.09ms from Los Angeles, US
174.65.25.23 AS22773 Cox Communications Inc. 7.92ms from Los Angeles, US
145.1.234.87 AS12479 Orange Espagne SA 10.66ms from Madrid, ES
34.47.219.247 AS396982 Google LLC 0.08ms from Mumbai, IN
121.82.174.215 AS17511 OPTAGE Inc. 3.13ms from Osaka, JP
85.166.115.71 AS2119 Telenor Norge AS 0.97ms from Oslo, NO
34.194.9.215 AS14618 Amazon.com, Inc. 0.24ms from Reston, US
98.95.73.71 AS14618 Amazon.com, Inc. 0.24ms from Reston, US
35.216.13.183 AS19527 Google LLC 0.12ms from Seoul, KR
119.149.188.151 AS38091 LG HelloVision Corp. 0.76ms from Seoul, KR
185.65.66.151 AS201735 PROPHASE ELECTRONICS, S.L. 4.47ms from Valencia, ES
20.232.129.151 AS8075 Microsoft Corporation 0.46ms from Ashburn, US
64.190.71.7 AS11696 Fusion, LLC 0.33ms from Atlanta, US
45.230.15.7 AS35699 Adamo Telecom Iberia S.A. 1.54ms from Barcelona, ES
176.95.218.103 AS3209 Vodafone GmbH 6.53ms from Duesseldorf, DE
139.189.205.39 AS4134 CHINANET BACKBONE 3.39ms from Haikou, CN
116.40.169.87 AS17858 LG POWERCOMM 1.45ms from Incheon, KR
1.229.26.231 AS9318 SK Broadband Co Ltd 1.61ms from Incheon, KR
31.125.102.39 AS6871 Plusnet 12.36ms from London, GB
151.55.30.71 AS1267 WIND TRE S.P.A. 6.86ms from Milan, IT
23.52.148.119 AS16625 Akamai Technologies, Inc. 0.88ms from New York City, US
91.123.211.247 AS50231 Syrion Sp. z o.o. 3.99ms from Wrocław, PL

Traceroute

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

$
traceroute -a -n -q1 -f2 103.168.172.66
traceroute to 103.168.172.66 (103.168.172.66): 64 hops max, 52 byte packets
2 [] 206.71.12.27 1.007 ms
3 [AS1828] 50.115.90.125 1.024 ms
4 [AS1828] 50.115.91.84 21.049 ms
Measurement taken from IPinfo ProbeNet in Atlanta, 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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