155.136.57.0/24

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 155.136.57.0/24

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

Nearby Ranges

BGP prefixes that overlap with 155.136.0.0/16

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

Read more

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
4.227.197.24	AS8075 Microsoft Corporation	`0.42ms` from Ashburn, US
73.114.227.8	AS7922 Comcast Cable Communications, LLC	`6.52ms` from Boston, US
102.44.181.40	AS8452 TE-AS	`6.00ms` from Cairo, EG
61.190.132.184	AS4134 CHINANET-BACKBONE	`6.17ms` from Huai'an, CN
36.90.187.104	AS7713 PT Telekomunikasi Indonesia	`12.52ms` from Jakarta, ID
188.113.132.24	AS51004 Sakhalin Cable Telesystems Ltd	`19.42ms` from Khabarovsk, RU
20.58.41.88	AS8075 Microsoft Corporation	`0.19ms` from London, GB
80.136.218.8	AS3320 Deutsche Telekom AG	`1.38ms` from Nuernberg, DE
191.41.237.88	AS26615 TIM S/A	`2.01ms` from Osasco, BR
189.101.129.8	AS28573 Claro NXT Telecomunicacoes Ltda	`9.09ms` from Osasco, BR
176.161.57.88	AS5410 Bouygues Telecom SA	`7.68ms` from Paris, FR
2.38.43.184	AS30722 Fastweb SpA	`8.90ms` from Rome, IT
73.52.161.136	AS7922 Comcast Cable Communications, LLC	`3.48ms` from Salt Lake City, US
121.165.36.200	AS4766 Korea Telecom	`1.52ms` from Seoul, KR
211.107.121.88	AS4766 Korea Telecom	`4.85ms` from Seoul, KR
121.131.225.40	AS4766 Korea Telecom	`1.29ms` from Seoul, KR
201.69.92.40	AS27699 TELEFÔNICA BRASIL S.A	`1.84ms` from São Paulo, BR
125.192.82.88	AS2518 BIGLOBE Inc.	`9.19ms` from Tokyo, JP
180.149.165.8	AS4721 JCOM Co., Ltd.	`10.86ms` from Tokyo, JP
76.71.95.200	AS577 Bell Canada	`3.24ms` from Toronto, CA
20.116.76.40	AS8075 Microsoft Corporation	`0.17ms` from Toronto, CA
62.57.129.24	AS6739 VODAFONE ONO, S.A.	`6.19ms` from Barcelona, ES
3.31.88.200	AS8987 Amazon Data Services Ireland Ltd	`0.43ms` from Boardman, US
181.192.66.88	AS52419 CESOP	`5.69ms` from Buenos Aires, AR
37.187.92.216	AS16276 OVH SAS	`0.08ms` from Gravelines, FR

Traceroute

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

traceroute -a -n -q1 -f4 -m12 155.136.57.249

traceroute to 155.136.57.249 (155.136.57.249): 12 hops max, 52 byte packets

4 [AS36236] 104.225.2.190 0.448 ms

5 *

6 *

7 *

8 [AS32787] 2.23.130.113 9.834 ms

9 [AS32787] 209.200.159.116 94.729 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Durham, US

On January 19th 2026

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.

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