IPv4 R&E Routing Table Report 20:00 GMT Fri 20 Jan, 2023 IPv4 BGP Table (R&E) as seen at SingAREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/SingAREN/ Analysis Summary ---------------- BGP routing table entries examined: 8429 Prefixes after maximum aggregation (per Origin AS): 5596 Deaggregation factor: 1.51 Unique aggregates announced (without unneeded subnets): 6346 Number of IPv4 prefixes with a valid ROA: 2547 Number of IPv4 prefixes with an invalid ROA: 10 Number of IPv4 prefixes with no ROA: 5872 Total ASes present in the Internet Routing Table: 1574 Prefixes per ASN: 5.36 Origin-only ASes present in the Internet Routing Table: 1308 Origin ASes announcing only one prefix: 668 Transit ASes present in the Internet Routing Table: 266 Transit-only ASes present in the Internet Routing Table: 75 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 13 Max AS path prepend of ASN ( 20537) 9 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 41076 Number of 32-bit ASNs visible in the Routing Table: 345 Prefixes from 32-bit ASNs in the Routing Table: 862 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: 95506432 Equivalent to 5 /8s, 177 /16s and 80 /24s Percentage of available address space announced: 2.6 Percentage of allocated address space announced: 2.6 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: 1247 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 1633 Total APNIC prefixes after maximum aggregation: 1094 APNIC Deaggregation factor: 1.49 Prefixes being announced from the APNIC address blocks: 1634 Unique aggregates announced from the APNIC address blocks: 1268 APNIC Region origin ASes present in the Internet Routing Table: 230 APNIC Prefixes per ASN: 7.10 APNIC Region origin ASes announcing only one prefix: 106 APNIC Region transit ASes present in the Internet Routing Table: 17 Average APNIC Region AS path length visible: 2.7 Max APNIC Region AS path length visible: 9 Number of APNIC region 32-bit ASNs visible in the Routing Table: 71 Number of APNIC addresses announced to Internet: 18550784 Equivalent to 1 /8s, 27 /16s and 16 /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, 131072-151865 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: 2052 Total ARIN prefixes after maximum aggregation: 1266 ARIN Deaggregation factor: 1.62 Prefixes being announced from the ARIN address blocks: 2061 Unique aggregates announced from the ARIN address blocks: 1581 ARIN Region origin ASes present in the Internet Routing Table: 497 ARIN Prefixes per ASN: 4.15 ARIN Region origin ASes announcing only one prefix: 220 ARIN Region transit ASes present in the Internet Routing Table: 107 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 11 Number of ARIN region 32-bit ASNs visible in the Routing Table: 91 Number of ARIN addresses announced to Internet: 15676160 Equivalent to 0 /8s, 239 /16s and 51 /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, 393216-401308 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, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 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: 3310 Total RIPE prefixes after maximum aggregation: 2785 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 3301 Unique aggregates announced from the RIPE address blocks: 2843 RIPE Region origin ASes present in the Internet Routing Table: 647 RIPE Prefixes per ASN: 5.10 RIPE Region origin ASes announcing only one prefix: 291 RIPE Region transit ASes present in the Internet Routing Table: 96 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 132 Number of RIPE addresses announced to Internet: 57354496 Equivalent to 3 /8s, 107 /16s and 41 /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 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 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: 522 Total LACNIC prefixes after maximum aggregation: 281 LACNIC Deaggregation factor: 1.86 Prefixes being announced from the LACNIC address blocks: 522 Unique aggregates announced from the LACNIC address blocks: 433 LACNIC Region origin ASes present in the Internet Routing Table: 73 LACNIC Prefixes per ASN: 7.15 LACNIC Region origin ASes announcing only one prefix: 29 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 7.0 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 25 Number of LACNIC addresses announced to Internet: 1285888 Equivalent to 0 /8s, 19 /16s and 159 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 910 Total AfriNIC prefixes after maximum aggregation: 168 AfriNIC Deaggregation factor: 5.42 Prefixes being announced from the AfriNIC address blocks: 910 Unique aggregates announced from the AfriNIC address blocks: 220 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 18.20 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.3 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2638848 Equivalent to 0 /8s, 40 /16s and 68 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 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 2907 573 2132 458 SINET-AS Research Organization of Infor 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 171 329 118 AARNET-AS-AP Australian Academic and Re 23767 30 3 10 A-STAR-AS-AP A-STAR, SG 134096 27 3 18 EHEALTHNSW-AS-AP eHealth NSW, AU 24436 23 27 19 UQ-AS-AP University of Queensland, AU 6262 22 128 17 CSIRO Commonwealth Scientific and Indus 10148 19 20 18 UNIMELB-AS-AP The University of Melbour 38022 18 3 13 REANNZ-NZ-AP REANNZ National Research a 2506 16 52 6 SUPERCSI NTT WEST CHUGOKU CORPORATION, Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6325 64 169 13 ILLINOIS-CENTURY, US 6360 54 62 7 UNIVHAWAII, US 25977 44 10 15 HCCS, US 18558 40 4 26 NETBLK-RCOEK, US 2572 39 173 20 MORENET, US 376 37 5 35 RISQ-AS, CA 3592 37 16 3 TRINCOLL-AS, US 3477 34 22 17 NOAA-NWAVE, US 40326 33 2 13 ECKERD-COLLEGE, US 46115 33 2 1 LUTHER, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 283 1935 251 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 559 114 550 105 SWITCH Peering requests: peering@switch 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 95 27 75 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 3267 56 63 41 RUNNET, RU Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 28391 149 9 65 Universidad Juarez Autonoma de Tabasco, 2715 57 101 37 Fundacao Carlos Chagas Filho de Amparo 3596 34 4 3 Universidad Autonoma Metropolitana, MX 263683 33 10 21 Universidad de Costa Rica, CR 11340 20 1 17 Red Universitaria Nacional, CL 3597 18 1 13 Fundacion InnovaT, AR 28609 17 1 2 Instituto Nupef, BR 262742 14 2 1 Fundacao Universidade Federal do ABC - 21612 12 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 1916 9 11 5 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 338 318 67 TENET-1, ZA 36914 244 82 3 KENET-AS, KE 327687 46 28 3 RENU, UG 8094 44 48 14 PUKNET, ZA 3208 32 2 1 ARN, DZ 37182 31 8 1 TERNET, TZ 327700 31 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 12 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 573 2132 458 SINET-AS Research Organization of Infor 2018 338 318 67 TENET-1, ZA 680 283 1935 251 DFN Verein zur Foerderung eines Deutsch 36914 244 82 3 KENET-AS, KE 786 186 1775 183 JANET Jisc Services Limited, GB 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 171 329 118 AARNET-AS-AP Australian Academic and Re 28391 149 9 65 Universidad Juarez Autonoma de Tabasco, 559 114 550 105 SWITCH Peering requests: peering@switch 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 2018 338 271 TENET-1, ZA 36914 244 241 KENET-AS, KE 58647 175 173 KAGAWAU-AS Kagawa University, JP 28391 149 84 Universidad Juarez Autonoma de Tabasco, MX 7575 171 53 AARNET-AS-AP Australian Academic and Research N 6325 64 51 ILLINOIS-CENTURY, US 6360 54 47 UNIVHAWAII, US 327687 46 43 RENU, UG 3592 37 34 TRINCOLL-AS, US 200521 54 33 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/SingAREN/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 /12:3 /13:2 /14:9 /15:52 /16:1093 /17:235 /18:213 /19:273 /20:325 /21:414 /22:673 /23:722 /24:4415 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 231 244 KENET-AS, KE 46115 32 33 LUTHER, US 200521 31 54 SEAP-AGE, ES 25977 30 44 HCCS, US 37182 30 31 TERNET, TZ 40326 29 33 ECKERD-COLLEGE, US 327700 28 31 MoRENet, MZ 3267 21 56 RUNNET, RU 31638 21 21 ASN-LEPIDA, IT 3233 20 30 ICI-ROTLD Romanian National R&D Network, RO Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 8:1 12:1 18:2 23:1 24:2 31:7 35:3 38:4 41:139 44:4 45:15 46:5 49:4 62:9 63:2 64:23 66:10 67:38 68:1 69:8 70:2 72:2 74:38 76:4 77:8 78:3 79:4 80:17 81:28 82:6 83:6 84:11 85:42 86:2 87:1 89:10 91:42 92:1 93:4 94:4 95:3 97:2 102:12 103:79 104:9 108:2 109:7 123:8 125:1 128:57 129:24 130:9 131:33 132:13 133:149 134:11 136:31 137:39 138:9 139:2 140:11 141:1 142:5 143:15 144:1 145:2 146:32 147:14 148:194 149:5 150:23 151:2 152:55 153:12 154:24 155:26 156:10 157:27 158:4 159:5 160:25 161:4 162:9 163:34 164:4 165:6 166:1 167:5 168:85 169:5 170:21 171:1 172:2 173:7 177:6 179:5 180:2 185:44 186:1 187:1 188:13 190:2 191:1 192:829 193:273 194:145 195:64 196:143 197:149 198:120 199:55 200:42 201:18 202:223 203:172 204:102 205:32 206:48 207:41 208:33 209:19 210:3 212:62 213:5 216:40 217:10 219:5 End of report