Network report
Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.
Checking routing, RPKI, reverse DNS, blocklists and the registry. This usually takes 3 to 10 seconds.
Problem: AS9583 (SIFY-AS-IN) announces 2191 IPv4 and 34 IPv6 prefixes. 1 problem · 2 warnings
| AS page | AS9583 |
|---|---|
| Holder | SIFY-AS-IN - Sify Limited |
| Allocation | APNIC, India (IN), allocated 1999-07-23 |
| Prefixes (IPv4 / IPv6) | 2191 / 34 |
| RPKI valid | 92% (2049 / 2225) |
| Upstreams and peers | 66 |
| Peering policy | Open |
What to fix
-
Problem
4 of 2225 announced prefixes are RPKI invalid: 1.6.168.0/24, 1.6.169.0/24, 1.6.170.0/24, 1.6.183.0/24.
A ROA covers them but does not allow this origin or prefix length, so networks that filter (most large ones do) drop these routes.
Fix: Fix the ROAs (origin AS and max length) at your RIR, or stop announcing the routes.
-
Warning
10 of 2225 announced prefixes have no ROA (RPKI not found): 1.7.0.0/24, 1.7.24.0/23, 1.7.55.0/24, 1.7.91.0/24, 1.7.244.0/23 (+5).
Without a ROA, networks cannot tell your routes from a hijack.
Fix: Create a ROA for each at your RIR portal, with origin AS9583 and a max length equal to the prefix length:
1.7.0.0/24 AS9583 max-length /24 1.7.24.0/23 AS9583 max-length /23 1.7.55.0/24 AS9583 max-length /24 1.7.91.0/24 AS9583 max-length /24 1.7.244.0/23 AS9583 max-length /23 119.226.80.0/22 AS9583 max-length /22 119.226.116.0/24 AS9583 max-length /24 124.7.80.0/22 AS9583 max-length /22 124.7.100.0/22 AS9583 max-length /22 124.7.134.0/23 AS9583 max-length /23
-
Warning
31 of 2225 announced prefixes have no IRR route object: 210.214.146.0/23, 1.7.0.0/24, 221.135.180.0/23, 221.135.228.0/22, 210.214.32.0/20 (+26).
Many networks build their prefix filters from IRR data; without route objects some of them drop the routes.
Fix: Create route (IPv4) and route6 (IPv6) objects with origin AS9583 in your RIR’s IRR database (or RADB).
route: 210.214.146.0/23 origin: AS9583 route: 1.7.0.0/24 origin: AS9583 route: 221.135.180.0/23 origin: AS9583
Checks
Routing and RPKI 4 of 2225 announced prefixes are RPKI invalid: 1.6.168.0/24, 1.6.169.0/24, 1.6.170.0/24, 1.6.183.0/24.
- Pass: AS9583 announces 2191 IPv4 and 34 IPv6 prefixes.
- Problem: 4 of 2225 announced prefixes are RPKI invalid: 1.6.168.0/24, 1.6.169.0/24, 1.6.170.0/24, 1.6.183.0/24.
- Warning: 10 of 2225 announced prefixes have no ROA (RPKI not found): 1.7.0.0/24, 1.7.24.0/23, 1.7.55.0/24, 1.7.91.0/24, 1.7.244.0/23 (+5).
- Info: 2049 of 2225 announced prefixes are RPKI valid.
- Info: The RPKI state of 162 prefixes was not looked up (no ROA of AS9583 covers them; only the first 10 are checked).
- Warning: 31 of 2225 announced prefixes have no IRR route object: 210.214.146.0/23, 1.7.0.0/24, 221.135.180.0/23, 221.135.228.0/22, 210.214.32.0/20 (+26).
- Info: 66 upstreams and peers, 549 downstream networks seen.
| Holder | SIFY-AS-IN - Sify Limited |
|---|---|
| IPv4 prefixes | 2191 |
| IPv6 prefixes | 34 |
| RPKI | 2049 valid · 4 invalid · 10 not found · 162 not looked up |
| Without IRR route object | 31 |
| Downstream networks | 549 |
| Prefix | RPKI |
|---|---|
| 1.6.168.0/24 | RPKI invalid |
| 1.6.169.0/24 | RPKI invalid |
| 1.6.170.0/24 | RPKI invalid |
| 1.6.183.0/24 | RPKI invalid |
| 1.7.0.0/24 | No ROA |
| 1.7.24.0/23 | No ROA |
| 1.7.55.0/24 | No ROA |
| 1.7.91.0/24 | No ROA |
| 1.7.244.0/23 | No ROA |
| 119.226.80.0/22 | No ROA |
| 119.226.116.0/24 | No ROA |
| 124.7.80.0/22 | No ROA |
| 124.7.100.0/22 | No ROA |
| 124.7.134.0/23 | No ROA |
Upstreams and peers seen to the left 66
Announced prefixes 2225
Showing the first 100.
Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru
Open in ASN & BGP prefix lookupRegistration Found at rdap.apnic.net.
- Pass: Found at rdap.apnic.net.
| Name | SIFY-AS-IN |
|---|---|
| Handle | AS9583 |
| Range | AS9583 |
| Country | IN |
| Status | active |
| Registered | 2008-09-04T06:40:28Z |
| Last changed | 2013-04-07T23:49:30Z |
| Abuse contact | ipadmin@sifycorp.com |
| Registry (RIR) | APNIC |
|---|---|
| Country | India (IN) |
| Delegated on | 1999-07-23 |
| Status | Allocated |
| Delegated range | AS9583 |
Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.
| Role | Name | |
|---|---|---|
| abuse | IRT-SIFYNET-IN | ipadmin@sifycorp.com |
| administrative, technical | Hostmaster Satyam Infoway | ipadmin@sifycorp.com |
Source: https://rdap.apnic.net/autnum/9583. Registration data from rdap.apnic.net, shown under its terms of use (terms): not for marketing or bulk collection.
Open in WHOIS / RDAP lookupPeeringDB AS9583 is in PeeringDB as Sify Technologies Limited.
- Pass: AS9583 is in PeeringDB as Sify Technologies Limited.
- Info: Peering policy: Open.
- Info: Present at 20 internet exchanges with 20 ports (574G in total).
| Network | Sify Technologies Limited (India's first private ISP) |
|---|---|
| AS number | AS9583 |
| Type | NSP, Global |
| Website | http://www.sifycorp.com/ |
| IRR as-set | AS9583:AS-SIFY |
| Prefixes (IPv4 / IPv6) | 10000 / 3000 |
| Traffic | 500-1000Gbps, Balanced |
| Peering policy | Open |
| Policy URL | http://as9583.peeringdb.com |
| Locations | Preferred |
| Ratio required | No |
| Contracts | Required |
| Looking glass | http://lookingglass.sify.net/ |
| Last updated | 2026-06-08 |
| Technical | peering@sifycorp.com |
|---|---|
| NOC | netops@sifycorp.com |
| Abuse | abuse@sifycorp.com |
| Sales | pandit.rahul@sifycorp.com |
Source: PeeringDB. Results are cached for an hour.
Open in PeeringDB lookup