IPv4 R&E Routing Table Report 18:10 GMT Sun 05 Apr, 2026 IPv4 BGP Table (R&E) as seen at WACREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/WACREN/ Analysis Summary ---------------- BGP routing table entries examined: 68 Prefixes after maximum aggregation (per Origin AS): 58 Deaggregation factor: 1.17 Unique aggregates announced (without unneeded subnets): 62 Number of IPv4 prefixes with a valid ROA: 23 Number of IPv4 prefixes with an invalid ROA: 8 Number of IPv4 prefixes with no ROA: 37 Total ASes present in the Internet Routing Table: 59 Prefixes per ASN: 1.15 Origin-only ASes present in the Internet Routing Table: 34 Origin ASes announcing only one prefix: 32 Transit ASes present in the Internet Routing Table: 25 Transit-only ASes present in the Internet Routing Table: 17 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.5 Max AS path length visible: 7 Max AS path prepend of ASN ( 11537) 1 Prefixes from unregistered ASNs in the Routing Table: 0 Number of instances of unregistered ASNs: 0 Number of 32-bit ASNs allocated by the RIRs: 49225 Number of 32-bit ASNs visible in the Routing Table: 16 Prefixes from 32-bit ASNs in the Routing Table: 15 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 1 Number of addresses announced to Internet: 56016 Equivalent to 0 /8s, 0 /16s and 218 /24s Percentage of available address space announced: 0.0 Percentage of allocated address space announced: 0.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 28 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 23 Total APNIC prefixes after maximum aggregation: 18 APNIC Deaggregation factor: 1.28 Prefixes being announced from the APNIC address blocks: 23 Unique aggregates announced from the APNIC address blocks: 22 APNIC Region origin ASes present in the Internet Routing Table: 14 APNIC Prefixes per ASN: 1.64 APNIC Region origin ASes announcing only one prefix: 9 APNIC Region transit ASes present in the Internet Routing Table: 8 Average APNIC Region AS path length visible: 4.8 Max APNIC Region AS path length visible: 7 Number of APNIC region 32-bit ASNs visible in the Routing Table: 4 Number of APNIC addresses announced to Internet: 12576 Equivalent to 0 /8s, 0 /16s and 49 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 13 Total ARIN prefixes after maximum aggregation: 11 ARIN Deaggregation factor: 1.18 Prefixes being announced from the ARIN address blocks: 13 Unique aggregates announced from the ARIN address blocks: 11 ARIN Region origin ASes present in the Internet Routing Table: 9 ARIN Prefixes per ASN: 1.44 ARIN Region origin ASes announcing only one prefix: 7 ARIN Region transit ASes present in the Internet Routing Table: 5 Average ARIN Region AS path length visible: 3.3 Max ARIN Region AS path length visible: 5 Number of ARIN region 32-bit ASNs visible in the Routing Table: 1 Number of ARIN addresses announced to Internet: 3504 Equivalent to 0 /8s, 0 /16s and 13 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-404380 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 9 Total RIPE prefixes after maximum aggregation: 9 RIPE Deaggregation factor: 1.00 Prefixes being announced from the RIPE address blocks: 9 Unique aggregates announced from the RIPE address blocks: 9 RIPE Region origin ASes present in the Internet Routing Table: 4 RIPE Prefixes per ASN: 2.25 RIPE Region origin ASes announcing only one prefix: 3 RIPE Region transit ASes present in the Internet Routing Table: 2 Average RIPE Region AS path length visible: 3.0 Max RIPE Region AS path length visible: 4 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1 Number of RIPE addresses announced to Internet: 3840 Equivalent to 0 /8s, 0 /16s and 15 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 2 Total LACNIC prefixes after maximum aggregation: 2 LACNIC Deaggregation factor: 1.00 Prefixes being announced from the LACNIC address blocks: 2 Unique aggregates announced from the LACNIC address blocks: 2 LACNIC Region origin ASes present in the Internet Routing Table: 2 LACNIC Prefixes per ASN: 1.00 LACNIC Region origin ASes announcing only one prefix: 2 LACNIC Region transit ASes present in the Internet Routing Table: 1 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 6 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0 Number of LACNIC addresses announced to Internet: 512 Equivalent to 0 /8s, 0 /16s and 2 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 21 Total AfriNIC prefixes after maximum aggregation: 18 AfriNIC Deaggregation factor: 1.17 Prefixes being announced from the AfriNIC address blocks: 20 Unique aggregates announced from the AfriNIC address blocks: 17 AfriNIC Region origin ASes present in the Internet Routing Table: 13 AfriNIC Prefixes per ASN: 1.54 AfriNIC Region origin ASes announcing only one prefix: 11 AfriNIC Region transit ASes present in the Internet Routing Table: 3 Average AfriNIC Region AS path length visible: 2.3 Max AfriNIC Region AS path length visible: 3 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 10 Number of AfriNIC addresses announced to Internet: 33536 Equivalent to 0 /8s, 0 /16s and 131 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9949 4 0 2 HOSEO-AS Hoseo University, KR 64302 4 0 1 IDNIC-IDREN-AS-ID IDREN - Indonesia Resea 4605 2 0 2 ERX-HKBUNET Hong Kong Baptist University, 10052 2 0 2 KNU-AS Kyungpook National University, KR 38426 2 0 2 KREI-AS-KR KOREA RURAL ECONOMIC INSTITUTE 4158 1 0 1 CITYUNI-AS-AP City University of Hong Kon 4538 1 0 1 ERX-CERNET-BKB China Education and Resear 9270 1 2 1 APAN-KR-AS National Infomation Society Ag 9489 1 0 1 KARINET-AS Korea Aerospace Research Insti 23864 1 0 1 SINGAREN-GIX-IHPC-AS-AP Singapre Advance Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 11537 4 0 2 INTERNET2-RESEARCH-EDU - Internet2, US 2386 2 0 2 INS-AS - AT&T Enterprises, LLC, US 1351 1 0 1 UVM-EDU-AS - University of Vermont, US 6509 1 0 1 CANARIE-NTN - CANARIE Inc, CA 10326 1 0 1 WPI - Worcester Polytechnic Institute, US 11252 1 0 1 ISU-NET-AS - Idaho State University, US 21976 1 0 1 NJEDGE-NET - NJEDge.Net, Inc., US 22215 1 0 1 BHSU - Black Hills State University, US 395549 1 0 1 AEINSTEINCOM - Albert Einstein College Of Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8895 6 1 6 ISU Internet Services Unit ISU, SA 2603 1 0 1 NORDUNET, DK 28885 1 0 1 OMANTEL-NAP-AS OmanTel NAP, OM 50999 1 0 1 KAUST-AS1, SA Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 18592 1 0 1 Corporacion Universitaria para el Desarro 28550 1 0 1 UNINET, MX Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 37661 8 7 5 NRaE1-AS, NG 327992 2 1 2 GHANAIAN-ACADEMIC-AND-RESEARCH-NETWORK, G 37288 1 0 1 WACREN, SN 37686 1 0 1 ABUZ1-AS, NG 327944 1 0 1 AIFM, GH 328054 1 0 1 Univ-Development-AS, GH 328293 1 0 1 RDED-AS, TG 328353 1 0 1 MethodistUniversity-AS, GH 328663 1 0 1 Catholic-University-Ghana, GH 328702 1 0 1 ADN-AS, BJ Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 37661 8 7 5 NRaE1-AS, NG 8895 6 1 6 ISU Internet Services Unit ISU, SA 9949 4 0 2 HOSEO-AS Hoseo University, KR 11537 4 0 2 INTERNET2-RESEARCH-EDU - Internet2, US 64302 4 0 1 IDNIC-IDREN-AS-ID IDREN - Indonesia Resea 2386 2 0 2 INS-AS - AT&T Enterprises, LLC, US 4605 2 0 2 ERX-HKBUNET Hong Kong Baptist University, 10052 2 0 2 KNU-AS Kyungpook National University, KR 38426 2 0 2 KREI-AS-KR KOREA RURAL ECONOMIC INSTITUTE 327992 2 1 2 GHANAIAN-ACADEMIC-AND-RESEARCH-NETWORK, G Complete listing at https://bgp.nsrc.org/REN/WACREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 64302 4 3 IDNIC-IDREN-AS-ID IDREN - Indonesia Research an 9949 4 2 HOSEO-AS Hoseo University, KR 11537 4 2 INTERNET2-RESEARCH-EDU - Internet2, US Complete listing at https://bgp.nsrc.org/REN/WACREN/data-CIDRnet Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN Complete listing at https://bgp.nsrc.org/REN/WACREN/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:0 /10:0 /11:0 /12:0 /13:0 /14:0 /15:0 /16:0 /17:0 /18:1 /19:1 /20:2 /21:1 /22:10 /23:7 /24:28 /25:9 /26:3 /27:5 /28:1 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8895 6 6 ISU Internet Services Unit ISU, SA 9949 4 4 HOSEO-AS Hoseo University, KR 4605 2 2 ERX-HKBUNET Hong Kong Baptist University, HK 38426 2 2 KREI-AS-KR KOREA RURAL ECONOMIC INSTITUTE, KR 1351 1 1 UVM-EDU-AS - University of Vermont, US 2603 1 1 NORDUNET, DK 4158 1 1 CITYUNI-AS-AP City University of Hong Kong, HK 6509 1 1 CANARIE-NTN - CANARIE Inc, CA 9489 1 1 KARINET-AS Korea Aerospace Research Institute, KR 11537 1 4 INTERNET2-RESEARCH-EDU - Internet2, US Complete listing at https://bgp.nsrc.org/REN/WACREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 62:1 102:2 103:6 109:2 154:3 163:2 164:1 196:2 198:2 200:1 201:1 208:1 212:4 End of report