ResearchRouting table, RPKI, IRR & looking glass

AS205544 Leaseweb UK Limited

AS205544 (LEASEWEB-UK-LON-11) is registered to Leaseweb UK Limited in GB. It originates 92 prefixes in the global routing table.

63
IPv4 prefixes
29
IPv6 prefixes
46,080
IPv4 addresses
100%
RPKI valid
Registration

Who holds AS205544

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS205544
Handle
LEASEWEB-UK-LON-11
Organization
Leaseweb UK Limited
Country
GB
ASPA
None published
Routing

What AS205544 announces

Prefixes originated by AS205544 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
63
IPv6 prefixes
29
IPv4 addresses
46,080 (180 /24s)
RPKI valid
92 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS205544
103
With an IRR route object
92 100%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (63)
23.19.56.0/2123.19.56.0/2423.19.59.0/2423.19.62.0/2423.81.32.0/2123.106.32.0/2123.106.56.0/2123.106.232.0/2131.58.18.0/2431.58.22.0/2431.58.28.0/2431.58.32.0/2431.59.15.0/2431.59.20.0/2431.59.21.0/2431.59.27.0/2431.59.28.0/2431.59.33.0/2437.44.216.0/2238.246.186.0/2338.253.124.0/2345.153.20.0/2481.17.56.0/2181.17.56.0/2281.17.60.0/2481.17.61.0/2481.17.62.0/2481.17.63.0/2482.38.198.0/2482.41.197.0/2482.113.64.0/1992.249.32.0/2295.168.176.0/2095.168.176.0/2195.168.184.0/2495.168.185.0/2495.168.186.0/2395.168.186.0/2495.168.187.0/2495.168.188.0/22173.208.48.0/21173.234.16.0/21173.234.16.0/24173.234.17.0/24173.234.18.0/23173.234.18.0/24173.234.19.0/24173.234.20.0/23173.234.22.0/23173.234.72.0/21173.234.136.0/21176.113.64.0/22185.70.240.0/24185.70.241.0/24185.70.242.0/23185.222.24.0/22185.222.24.0/24185.236.92.0/22185.245.124.0/22193.160.76.0/22194.56.232.0/24212.24.127.0/24212.135.128.0/24
IPv6 (29)
2001:1b88::/322a04:88c4::/322a04:88c6::/322a0d:3000::/322a0d:3001::/322a0d:3002::/322a0d:3003::/322a0d:3004::/322a0f:1540::/292a0f:1640::/292a0f:1940::/292a0f:2840::/292a0f:2940::/292a0f:2a40::/292a0f:2dc0::/292a0f:2e40::/292a0f:30c0::/292a0f:3140::/292a0f:3540::/292a0f:3740::/292a0f:e440::/292a11:3240::/292a11:4800::/292a11:8700::/292a11:e580::/292a12:3f00::/292a12:4b00::/292a12:5900::/292a12:cd00::/29

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS205544 is reached through

The AS just before AS205544 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS174 COGENT-174 60AS6453 AS6453 57AS1299 TWELVE99 23AS3257 GTT-BACKBONE 19AS16265 LEASEWEB-NETWORK 3
IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RIPELEASEWEB-UK-LON-11RIPE-NCC-END-MNT, LEASEWEB-UK-MNT

Route objects with origin AS205544: RIPE 97 · RADB 14 · ARIN 6 · APNIC 1

as-sets that list AS205544 (5)
AS-GTTCUSTAS-GTTCUST6AS-LEASEWEB-UKAS199746:AS-BLACKLISTAS204464:AS-BLACKLIST
Tools

Check AS205544 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup