155.136.144.0/24

AS21301 · Natwest Markets PLC

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Summary

Country	United Kingdom
Domain	rbs.co.uk
ASN	AS21301
Parent Range	155.136.0.0/16
Registry	RIPE
ID	ROY-SCOT-NET

WHOIS Details

inetnum:        155.136.0.0 - 155.136.255.255
netname:        ROY-SCOT-NET
descr:          Royal Bank of Scotland
country:        GB
admin-c:        CL5041-RIPE
tech-c:         Rd5168-RIPE
status:         LEGACY
mnt-by:         RBSG-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2019-12-04T13:11:18Z
source:         RIPE

person:         Sean Jarvis
address:        42 Islington High Street
address:        London
address:        N1 8XL
phone:          +44 20 7063 1687
e-mail:         sean.jarvis@rbs.com
nic-hdl:        CL5041-RIPE
mnt-by:         RBSG-MNT
created:        2012-08-13T13:30:01Z
last-modified:  2016-09-19T12:39:19Z
source:         RIPE

person:         RBS dnsmaster
address:        42 Islington High Street
address:        London
address:        N1 8XL
phone:          +44 20 7615 9759
e-mail:         domains@rbs.co.uk
nic-hdl:        Rd5168-RIPE
mnt-by:         RBSG-MNT
created:        2012-08-13T13:33:33Z
last-modified:  2018-05-18T13:05:01Z
source:         RIPE

route:          155.136.0.0/16
descr:          Royal Bank of Scotland
origin:         AS21054
mnt-by:         RBSG-MNT
mnt-routes:     AS5564-MNT
mnt-routes:     RBSG-MNT
mnt-routes:     MNT-PROLE
created:        2009-04-07T12:30:12Z
last-modified:  2016-09-19T12:56:41Z
source:         RIPE

route:          155.136.0.0/16
descr:          Royal Bank of Scotland
origin:         AS32787
mnt-by:         MNT-PROLE
mnt-by:         RBSG-MNT
notify:         hostmaster@prolexic.com
created:        2009-06-30T15:10:46Z
last-modified:  2011-03-25T10:05:43Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 155.136.144.0/24

Range	ASN	Company	Num of IPs
155.136.0.0/16	AS21054	Royal Bank of Scotland	65,536
155.136.0.0/16	AS21301	Royal Bank of Scotland	65,536
155.136.0.0/16	AS61231	Royal Bank of Scotland	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
59.110.13.232	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.78ms` from Beijing, CN
76.109.142.72	AS7922 Comcast Cable Communications, LLC	`11.09ms` from Boca Raton, US
18.197.186.168	AS16509 Amazon.com, Inc.	`0.14ms` from Frankfurt am Main, DE
91.18.124.216	AS3320 Deutsche Telekom AG	`9.15ms` from Frankfurt am Main, DE
103.175.24.72	AS139952 PT Trisari Data Indonusa	`0.42ms` from Jakarta, ID
49.244.132.104	AS23752 Nepal Telecommunications Corporation, Internet Services,	`2.23ms` from Kathmandu, NP
119.82.178.40	AS17698 COMMUNITY NETWORK CENTER INCORPORATED.	`7.81ms` from Osaka, JP
88.165.155.136	AS12322 Free SAS	`15.83ms` from Paris, FR
100.21.118.200	AS16509 Amazon.com, Inc.	`4.54ms` from Portland, US
201.137.36.200	AS8151 UNINET	`3.68ms` from Santiago de Queretaro, MX
189.242.96.152	AS8151 UNINET	`5.19ms` from Santiago de Queretaro, MX
179.217.176.232	AS28573 Claro NXT Telecomunicacoes Ltda	`10.78ms` from Sao Paulo, BR
218.149.235.152	AS4766 Korea Telecom	`5.71ms` from Seoul, KR
14.48.84.8	AS4766 Korea Telecom	`7.32ms` from Seoul, KR
60.36.179.184	AS4713 NTT Communications Corporation	`4.39ms` from Tokyo, JP
94.190.187.248	AS12796 Telecommunication Company Varna EAD	`0.63ms` from Varna, BG
120.6.35.168	AS4837 CHINA UNICOM China169 Backbone	`9.40ms` from Beijing, CN
68.145.214.72	AS6327 Shaw Communications Inc.	`12.17ms` from Calgary, CA
167.89.40.248	AS11377 SendGrid, Inc.	`0.22ms` from Chicago, US
75.209.156.104	AS6167 Verizon Business	`11.74ms` from Chicago, US
24.78.169.8	AS6327 Shaw Communications Inc.	`16.18ms` from Chicago, US
109.251.47.152	AS31148 Freenet LTD	`1.14ms` from Kyiv, UA
20.219.6.24	AS8075 Microsoft Corporation	`0.17ms` from Lohogaon, IN
86.220.38.40	AS3215 Orange S.A.	`19.84ms` from Lyon, FR
142.217.87.8	AS35911 Telebec	`13.37ms` from Montreal, CA

Traceroute

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

traceroute -a -n -q1 -f3 -m8 155.136.144.109

traceroute to 155.136.144.109 (155.136.144.109): 8 hops max, 52 byte packets

3 [] 206.53.202.157 14.488 ms

4 [AS32787] 23.32.69.169 14.427 ms

5 [AS32787] 209.200.182.180 119.179 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Gretna, US

On September 4th 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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