206208 looking glass

AS9583 Sify Limited 🇮🇳 IN

Announcing 2,226 prefixes, seen at the RIS collectors.

IPv4 prefixes
2,192
1,058,816 (4,136 × /24)
IPv6 prefixes
34
1 × /32
Upstreams
10
transit providers observed
Peers
25
settlement-free adjacencies
Downstreams
212
transit customers observed
Customer cone
4,441
ASes reachable through it

Registry and operator data

AS number
AS9583
Name
Sify Limited
Organisation
Sify Technologies Limited
Country
🇮🇳 IN
RIR
APNIC
Allocated
1999-07-23
Network type
NSP
Traffic levels
500-1000Gbps
Scope
Global
Peering policy
Open
IRR as-set
AS9583:AS-SIFY
Website
http://www.sifycorp.com/
Looking glass
http://lookingglass.sify.net/
PeeringDB
net/2536
Exchanges
20
Facilities
71

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

2,050 valid (92.1%) 5 invalid (0.2%) 171 no ROA (7.7%)

Whois

Fetched from whois.apnic.net

as-block:       AS9249 - AS10239
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2022-09-22T22:36:45Z
source:         APNIC

role:           APNIC Hostmaster
address:        PO Box 3646
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2026-08-26T00:40:00Z
source:         APNIC

aut-num:        AS9583
as-name:        SIFY-AS-IN
descr:          Sify Limited
descr:          ISP in India
country:        IN
import:         from AS4637
                action pref=10;
                accept ANY
import:         from AS701
                action pref=20;
                accept ANY
export:         to AS4637
                announce AS9583
export:         to AS701
                announce AS9583
default:        to AS4637
                action pref=10;
                networks ANY
remarks:        to provide a redudant routing path incase , one of the
remarks:        gateway fails.
admin-c:        HS51-AP
tech-c:         HS51-AP
mnt-by:         MAINT-IN-IRINN
mnt-routes:     MAINT-IN-SIFY
mnt-irt:        IRT-SIFYNET-IN
last-modified:  2013-04-07T23:49:30Z
source:         APNIC

irt:            IRT-SIFYNET-IN
address:        Sify Limited,
address:        5th, 6th & 7th floor Reliable Plaza,
address:        Kalwa industrial Area, Thane Belapur Road,
address:        Airoli, Navi Mumbai-400708
e-mail:         ipadmin@sifycorp.com
abuse-mailbox:  abuse@sifycorp.com
admin-c:        HS51-AP
tech-c:         HS51-AP
auth:           # Filtered
mnt-by:         MAINT-IN-SIFY
mnt-by:         MAINT-IN-IRINN
last-modified:  2026-09-26T06:24:42Z
source:         APNIC

person:         Hostmaster Satyam Infoway
address:        Sify Limited,
address:        Second Floor, Tidel Park,
address:        No.4,Canal Bank Road,
address:        Taramani, Chennai - 600113
country:        IN
phone:          +914422541125
fax-no:         +914422540771
e-mail:         ipadmin@sifycorp.com
nic-hdl:        HS51-AP
mnt-by:         MAINT-IN-IRINN
last-modified:  2026-05-22T07:41:45Z
source:         APNIC