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AS25577

MAINFRAME & CYBERNETIC SYSTEMS LIMITED

AS25577 is MAINFRAME & CYBERNETIC SYSTEMS LIMITED (bec.uk). It announces 48,640 IPv4 addresses in 53 prefixes, and 1 IPv6 prefixes.

United Kingdom· RIPE· allocated 2003-01-15· isp

48,640
IPv4 addresses announced
53
IPv4 prefixes
1
IPv6 prefixes
20.75%
of its routes RPKI-valid
48,640
of its IPv4 geolocated
5
countries

Where its space is

The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.

  1. United Kingdom47,944 · 98.57%
  2. Germany256 · 0.53%
  3. The Netherlands256 · 0.53%
  4. Turkey160 · 0.33%
  5. Republic of the Congo24 · 0.05%

Registry record

Its ASN Whois record, as the registry publishes it.

handle
C4L-AS
name
MAINFRAME & CYBERNETIC SYSTEMS LIMITED
org
ORG-MCSL9-RIPE
org name
MAINFRAME & CYBERNETIC SYSTEMS LIMITED
org address
New Broad Street House, 35 New Broad Street, EC2M 1NH, London, UNITED KINGDOM
org country
GB
country
GB
source
ripe
status
ASSIGNED
created
2003-01-15
updated
2026-03-03
remarks
Transit Customers / Hosting Systems UK Private Peering / UK Dedicated Transit / Thinkgrid / Transversal / Noomobile / EurISP / Orbis Telecom / Contactual / DigiMedia / Upstream Internet / Selection Services Ltd / Thermeon BGP / One Connect / Interfax Communications / WebAge Limited / Accesspoint Technologies / *** Transit Suppliers *** / NTT / TINET / Seabone / *** LINX/LONAP & Private Peers *** / *** Full Transit Customers ***
maintainer
RIPE-NCC-END-MNT|lir-uk-frame-1-MNT
abuse name
Abuse-C Role
abuse email
frank@bec.uk
abuse kind
role

What the databases see

Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.

IPv4 prefixes

Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.

53 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
5.133.184.0/22United Kingdomvalid172026-10-02
5.133.188.0/23United Kingdomnot found172026-10-02
5.133.191.0/24United Kingdomnot found172026-10-02
31.3.208.0/24United Kingdomvalid172026-10-02
31.3.211.0/24United Kingdomnot found172026-10-02
31.3.212.0/23United Kingdomnot found172026-10-02
31.3.221.0/24United Kingdomnot found172026-10-02
31.3.223.0/24United Kingdomnot found172026-10-02
37.58.24.0/22United Kingdomnot found172026-10-02
37.58.29.0/24United Kingdomnot found172026-10-02
77.73.11.0/24United Kingdomnot found172026-10-02
77.73.15.0/24United Kingdomnot found172026-10-02
78.40.56.0/23United Kingdomnot found172026-10-02
78.40.61.0/24United Kingdomnot found172026-10-02
81.27.64.0/24United Kingdomnot found172026-10-02
81.27.66.0/23United Kingdomnot found172026-10-02
81.27.72.0/23United Kingdomnot found172026-10-02
81.27.75.0/24United Kingdomnot found172026-10-02
81.27.76.0/24United Kingdomnot found172026-10-02
81.27.80.0/22United Kingdomnot found172026-10-02
81.27.81.0/24United Kingdomnot found172026-10-02
81.27.87.0/24United Kingdomnot found172026-10-02
81.27.88.0/21United Kingdomnot found172026-10-02
81.27.88.0/22United Kingdomnot found172026-10-02
81.27.92.0/23United Kingdomnot found172026-10-02
81.27.92.0/24United Kingdomnot found172026-10-02
81.27.94.0/24United Kingdomnot found172026-10-02
81.27.95.0/24United Kingdomnot found172026-10-02
82.197.72.0/24United Kingdomnot found172026-10-02
84.45.8.0/21United Kingdomnot found172026-10-02
84.45.16.0/20United Kingdomnot found172026-10-02
84.45.32.0/19United Kingdomvalid172026-10-02
84.45.64.0/18United Kingdomnot found172026-10-02
84.45.75.0/24United Kingdomnot found172026-10-02
85.159.88.0/24United Kingdomnot found172026-10-02
85.159.90.0/23United Kingdomnot found172026-10-02
85.159.95.0/24United Kingdomnot found172026-10-02
109.68.64.0/23United Kingdomvalid172026-10-02
109.68.68.0/24United Kingdomvalid172026-10-02
109.104.96.0/23United Kingdomnot found172026-10-02
109.104.98.0/24United Kingdomnot found172026-10-02
109.104.100.0/23United Kingdomvalid172026-10-02
109.104.105.0/24United Kingdomvalid172026-10-02
109.104.112.0/24United Kingdomvalid172026-10-02
109.104.114.0/24United Kingdomvalid172026-10-02
109.104.116.0/22United Kingdomnot found172026-10-02
109.104.120.0/21Turkeynot found172026-10-02
109.104.122.0/23United Kingdomvalid172026-10-02
109.104.124.0/22United Kingdomnot found172026-10-02
178.251.233.0/24United Kingdomnot found172026-10-02
178.251.238.0/24also AS48660Turkeyinvalid:origin12026-10-02
178.251.239.0/24United Kingdomnot found172026-10-02
185.5.88.0/22United Kingdomnot found172026-10-02

IPv6 prefixes

Every IPv6 prefix BGP Route saw it announce.

1 prefixes
PREFIXCOUNTRYRPKIPEERSFIRST SEEN
2001:9d8::/32United Kingdomvalid202026-10-02
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