ResearchRouting table, RPKI, IRR & looking glass

AS3758 SingNet

AS3758 (SINGNET) is registered to SingNet in SG, through APNIC. It originates 367 prefixes in the global routing table.

339
IPv4 prefixes
28
IPv6 prefixes
712,704
IPv4 addresses
96%
RPKI valid
Registration

Who holds AS3758

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS3758
Handle
SINGNET
Organization
SingNet
Country
SG
Registry
APNIC
ASPA
None published
WHOIS recordAPNIC
% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS3758'

% Abuse contact for 'AS3758' is 'hostmaster@singnet.com.sg'

aut-num:        AS3758
as-name:        SINGNET
descr:          SingNet
descr:          Singapore Telecommunications Ltd
descr:          2 Stirling Rd
descr:          3rd Storey
descr:          Queenstown Telephone Exchange
descr:          Singapore, 148943
country:        SG
remarks:        This aut-num object created as part of the ER-Transfer from ARIN
org:            ORG-SPL1-AP
admin-c:        OD7-AP
tech-c:         OD7-AP
abuse-c:        AS2068-AP
mnt-lower:      MAINT-SINGNET-SG
mnt-routes:     MAINT-SINGNET-SG
mnt-by:         APNIC-HM
mnt-irt:        IRT-SINGNET-SG
last-modified:  2020-05-16T06:40:34Z
source:         APNIC

irt:            IRT-SINGNET-SG
address:        SingNet Engineering & Operations
address:        10 EUNOS ROAD 8,
address:
address:        Singapore 408600
e-mail:         hostmaster@singnet.com.sg
abuse-mailbox:  hostmaster@singnet.com.sg
admin-c:        SH9-AP
tech-c:         SH9-AP
auth:           # Filtered
remarks:        hostmaster@singnet.com.sg was validated on 2026-08-11
mnt-by:         MAINT-SG-SINGNET
last-modified:  2026-09-03T02:38:41Z
source:         APNIC

organisation:   ORG-SPL1-AP
org-name:       SingNet Pte Ltd
org-type:       LIR
country:        SG
address:        c/o Singapore Telecommunications
address:        10 EUNOS ROAD 8
address:        # 07-31, SINGAPORE POST CENTRE
phone:          +65-6838-6145
e-mail:         hostmaster@singnet.com.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2026-01-29T12:55:05Z
source:         APNIC

role:           ABUSE SINGNETSG
country:        ZZ
address:        SingNet Engineering & Operations
address:        10 EUNOS ROAD 8,
address:
address:        Singapore 408600
phone:          +000000000
e-mail:         hostmaster@singnet.com.sg
admin-c:        SH9-AP
tech-c:         SH9-AP
nic-hdl:        AS2068-AP
remarks:        Generated from irt object IRT-SINGNET-SG
remarks:        hostmaster@singnet.com.sg was validated on 2026-08-11
abuse-mailbox:  hostmaster@singnet.com.sg
mnt-by:         APNIC-ABUSE
last-modified:  2026-08-11T08:22:30Z
source:         APNIC

person:         Owner of Domains
address:        Owner of Domains
address:        Singapore Telecom, SingNet
address:        2 Stirling Road #03-00
address:        Singapore, Singapore
country:        SG
phone:          +65 64722580
fax-no:         +65 64753273
e-mail:         hostmaster@SINGNET.COM.SG
nic-hdl:        OD7-AP
mnt-by:         MAINT-SG-SINGNET
last-modified:  2008-09-04T07:29:19Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-US2)
Routing

What AS3758 announces

Prefixes originated by AS3758 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
339
IPv6 prefixes
28
IPv4 addresses
712,704 (2,784 /24s)
RPKI valid
353 96%
RPKI invalid
0
RPKI not found
14
ROAs naming AS3758
608
With an IRR route object
355 96%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (339)
2.56.56.0/2231.210.22.0/2337.0.10.0/2342.60.138.0/2342.60.202.0/2342.60.228.0/2342.60.248.0/2342.61.0.0/1642.61.5.0/2442.61.10.0/2442.61.15.0/2442.61.22.0/2442.61.25.0/2442.61.31.0/2442.61.46.0/2442.61.51.0/2442.61.60.0/2442.61.65.0/2442.61.71.0/2442.61.93.0/2442.61.94.0/2442.61.104.0/2442.61.123.0/2442.61.136.0/2142.61.176.0/2342.61.184.0/2242.61.234.0/2342.61.236.0/2342.61.244.0/2345.86.188.0/2345.135.4.0/2245.144.198.0/2358.185.0.0/1658.185.5.0/2458.185.15.0/2458.185.21.0/2458.185.63.0/2458.185.82.0/2458.185.83.0/2458.185.93.0/2458.185.163.0/2458.185.164.0/2458.185.178.0/2458.185.183.0/2458.185.190.0/2458.185.201.0/2458.185.207.0/2458.185.211.0/2458.185.212.0/2458.185.219.0/2458.185.220.0/2458.185.222.0/2458.185.223.0/2458.185.236.0/2458.185.237.0/2458.185.240.0/2458.185.248.0/2458.185.251.0/2480.94.89.0/2485.202.168.0/2285.203.24.0/2485.203.35.0/2491.103.9.0/2491.217.236.0/24103.186.249.0/24111.65.100.0/24111.65.102.0/23111.65.104.0/21111.65.108.0/22111.65.112.0/20115.42.128.0/17115.42.181.0/24115.42.185.0/24115.42.195.0/24115.42.196.0/24115.42.204.0/24115.42.206.0/24115.42.217.0/24115.42.219.0/24115.42.222.0/24115.42.251.0/24115.42.255.0/24115.66.56.0/21116.12.128.0/17116.12.137.0/24116.12.138.0/24116.12.147.0/24116.12.154.0/24116.12.156.0/24116.12.205.0/24116.12.206.0/24116.12.214.0/24116.12.226.0/24116.12.229.0/24116.12.234.0/24116.12.235.0/24116.12.238.0/24116.12.243.0/24118.200.183.0/24118.201.0.0/17118.201.1.0/24118.201.2.0/24118.201.6.0/24118.201.10.0/24118.201.11.0/24118.201.44.0/24118.201.65.0/24118.201.68.0/24118.201.75.0/24118.201.89.0/24118.201.95.0/24118.201.96.0/24118.201.99.0/24118.201.128.0/18118.201.134.0/24118.201.136.0/24118.201.178.0/24118.201.188.0/24118.201.190.0/24118.201.192.0/19
Show 219 more
118.201.193.0/24118.201.201.0/24118.201.207.0/24118.201.212.0/24118.201.217.0/24118.201.218.0/24118.201.219.0/24119.73.128.0/17119.73.130.0/24119.73.145.0/24119.73.148.0/24119.73.162.0/24119.73.191.0/24119.73.197.0/24119.73.201.0/24119.73.226.0/24119.73.242.0/24119.73.246.0/24119.73.251.0/24119.73.253.0/24119.75.0.0/18119.75.19.0/24119.75.33.0/24119.75.36.0/24119.75.41.0/24119.75.48.0/24119.75.53.0/24119.75.57.0/24124.66.128.0/19124.66.133.0/24124.66.150.0/24124.66.156.0/24124.66.157.0/24124.66.158.0/24124.66.159.0/24128.106.0.0/18128.106.4.0/24128.106.5.0/24128.106.15.0/24128.106.20.0/24128.106.21.0/24128.106.23.0/24128.106.28.0/24128.106.40.0/23128.106.40.0/24128.106.41.0/24132.244.212.0/22151.192.0.0/18159.172.245.0/24160.96.64.0/24160.96.65.0/24160.96.216.0/24160.96.217.0/24160.213.52.0/22160.213.84.0/22160.213.92.0/22160.213.96.0/22160.213.100.0/23160.213.106.0/23160.213.120.0/21160.213.144.0/22160.213.156.0/22160.213.160.0/21160.213.168.0/22160.213.184.0/21160.213.216.0/21161.229.250.0/24165.21.0.0/16165.21.18.0/24165.21.19.0/24165.21.31.0/24165.21.36.0/23165.21.49.0/24165.21.50.0/24165.21.70.0/24165.21.71.0/24165.21.72.0/24165.21.88.0/24165.21.91.0/24165.21.93.0/24165.21.94.0/24165.21.95.0/24165.21.104.0/24165.21.108.0/24165.21.109.0/24165.21.122.0/24165.21.123.0/24165.21.238.0/24165.21.244.0/24165.21.246.0/24166.120.129.0/24180.255.0.0/18180.255.12.0/24180.255.13.0/24180.255.17.0/24180.255.40.0/24180.255.41.0/24180.255.42.0/24180.255.43.0/24180.255.44.0/24180.255.45.0/24180.255.46.0/24180.255.47.0/24185.114.32.0/24192.26.233.0/24192.232.67.0/24192.232.69.0/24193.84.132.0/24194.180.111.0/24195.238.94.0/24202.8.1.0/24202.40.224.0/19202.78.48.0/24202.78.49.0/24202.78.52.0/22202.78.55.0/24202.160.224.0/21202.166.40.0/21202.176.192.0/19202.176.201.0/24203.124.0.0/22203.125.0.0/16203.125.15.0/24203.125.23.0/24203.125.44.0/24203.125.54.0/24203.125.81.0/24203.125.87.0/24203.125.106.0/24203.125.112.0/24203.125.115.0/24203.125.126.0/24203.125.129.0/24203.125.166.0/24203.125.178.0/24203.125.185.0/24203.125.186.0/24203.125.188.0/24203.125.194.0/24203.125.204.0/24203.125.212.0/23203.125.214.0/24203.125.218.0/24203.125.221.0/24203.125.224.0/24203.125.227.0/24203.125.236.0/24203.126.0.0/16203.126.2.0/24203.126.4.0/24203.126.7.0/24203.126.11.0/24203.126.14.0/24203.126.19.0/24203.126.29.0/24203.126.43.0/24203.126.52.0/24203.126.54.0/24203.126.57.0/24203.126.60.0/24203.126.80.0/24203.126.87.0/24203.126.92.0/24203.126.96.0/24203.126.110.0/24203.126.112.0/24203.126.114.0/24203.126.119.0/24203.126.138.0/24203.126.146.0/24203.126.151.0/24203.126.159.0/24203.126.163.0/24203.126.172.0/24203.126.178.0/24203.126.186.0/24203.126.189.0/24203.126.192.0/24203.126.194.0/24203.126.204.0/24203.126.216.0/24203.126.219.0/24203.126.228.0/24203.126.234.0/24203.126.238.0/24203.126.243.0/24203.126.247.0/24203.127.0.0/16203.127.16.0/24203.127.23.0/24203.127.29.0/24203.127.53.0/24203.127.61.0/24203.127.80.0/24203.127.86.0/24203.127.89.0/24203.127.96.0/24203.127.102.0/24203.127.110.0/24203.127.140.0/24203.127.146.0/24203.127.211.0/24203.127.217.0/24203.127.223.0/24203.127.232.0/24203.127.235.0/24203.127.240.0/20203.169.64.0/18203.208.144.0/24203.208.224.0/19212.124.93.0/24219.74.145.0/24220.255.8.0/21220.255.11.0/24220.255.12.0/24220.255.13.0/24220.255.14.0/24220.255.15.0/24220.255.190.0/23
IPv6 (28)
2001:c20::/322001:c20::/382001:c20:10::/482001:c20:18::/482001:c20:3c00::/382001:c20:4800::/382001:c20:48fe::/482001:c20:4c00::/382001:c20:5000::/382001:c20:6c00::/382001:c20:7009::/482001:c20:7807::/482001:c20:8405::/482001:c20:8407::/482001:c20:8408::/482001:c20:8409::/482001:c20:c814::/482001:c20:c818::/482400:1c00:13::/482400:d801:7f00::/402400:d802:4110::/452400:d802:4118::/452400:d802:4180::/422400:d802:41c0::/422400:d802:4218::/452400:d802:42c0::/422401:be20::/322404:5800::/32

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS3758 is reached through

The AS just before AS3758 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS6453 AS6453 59AS1299 TWELVE99 54AS3491 PCCWG-APAC-HK 14AS7473 SINGTEL-AS-AP 4AS4637 ASN-TELSTRA-GLOBAL 1
IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
APNICSINGNETAPNIC-HM
RADBSINGNETMAINT-AS3758

Route objects with origin AS3758: APNIC 14,360 · RADB 186 · RIPE 15 · LEVEL3 12 · ALTDB 1

as-sets that list AS3758 (22)
AS-17977ARCSTARAS-HURRICANEV6AS-KDDCUSTOMER2AS-LEVEL3-ORIGINS-NAAS-OCCAID6-CUSTOMERSAS-OCNAS-PACNET-CUSTOMER-PROXY-REGISTERAS-PACNET-DOWNSTREAM-HKAS-PACNET-DOWNSTREAM-PHAS-REACH-CUSTOMERSAS-RETN-ACTUAL-V4AS-RETN-ACTUAL-V6AS-SET-9930AS-SH-CUSTAS-SINGNETAS-STIX-TESTAS-STIX-TEST2AS-TELSTRA-INTL-CUSTOMERSAS13335:AS-CUSTOMERSAS3491:AS-CUSTOMERS-APAS7473:AS-CUSTOMERS:AS4750AS7473:AS-CUSTOMERS:AS7552
Tools

Check AS3758 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup