IPv4 R&E Routing Table Report 20:00 GMT Wed 04 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: 7831 Prefixes after maximum aggregation (per Origin AS): 5369 Deaggregation factor: 1.46 Unique aggregates announced (without unneeded subnets): 5903 Number of IPv4 prefixes with a valid ROA: 2731 Number of IPv4 prefixes with an invalid ROA: 13 Number of IPv4 prefixes with no ROA: 5087 Total ASes present in the Internet Routing Table: 1550 Prefixes per ASN: 5.05 Origin-only ASes present in the Internet Routing Table: 1290 Origin ASes announcing only one prefix: 661 Transit ASes present in the Internet Routing Table: 260 Transit-only ASes present in the Internet Routing Table: 85 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: 15 Max AS path prepend of ASN ( 20537) 9 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 41015 Number of 32-bit ASNs visible in the Routing Table: 375 Prefixes from 32-bit ASNs in the Routing Table: 941 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: 91167744 Equivalent to 5 /8s, 111 /16s and 28 /24s Percentage of available address space announced: 2.5 Percentage of allocated address space announced: 2.5 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: 1227 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 1715 Total APNIC prefixes after maximum aggregation: 1154 APNIC Deaggregation factor: 1.49 Prefixes being announced from the APNIC address blocks: 1716 Unique aggregates announced from the APNIC address blocks: 1339 APNIC Region origin ASes present in the Internet Routing Table: 260 APNIC Prefixes per ASN: 6.60 APNIC Region origin ASes announcing only one prefix: 123 APNIC Region transit ASes present in the Internet Routing Table: 20 Average APNIC Region AS path length visible: 2.9 Max APNIC Region AS path length visible: 15 Number of APNIC region 32-bit ASNs visible in the Routing Table: 96 Number of APNIC addresses announced to Internet: 18550528 Equivalent to 1 /8s, 27 /16s and 15 /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: 1550 Total ARIN prefixes after maximum aggregation: 964 ARIN Deaggregation factor: 1.61 Prefixes being announced from the ARIN address blocks: 1558 Unique aggregates announced from the ARIN address blocks: 1181 ARIN Region origin ASes present in the Internet Routing Table: 402 ARIN Prefixes per ASN: 3.88 ARIN Region origin ASes announcing only one prefix: 186 ARIN Region transit ASes present in the Internet Routing Table: 93 Average ARIN Region AS path length visible: 5.5 Max ARIN Region AS path length visible: 11 Number of ARIN region 32-bit ASNs visible in the Routing Table: 78 Number of ARIN addresses announced to Internet: 12153856 Equivalent to 0 /8s, 185 /16s and 116 /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: 3393 Total RIPE prefixes after maximum aggregation: 2839 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 3385 Unique aggregates announced from the RIPE address blocks: 2856 RIPE Region origin ASes present in the Internet Routing Table: 664 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: 97 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 139 Number of RIPE addresses announced to Internet: 57761024 Equivalent to 3 /8s, 113 /16s and 93 /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: 494 Total LACNIC prefixes after maximum aggregation: 230 LACNIC Deaggregation factor: 2.15 Prefixes being announced from the LACNIC address blocks: 493 Unique aggregates announced from the LACNIC address blocks: 278 LACNIC Region origin ASes present in the Internet Routing Table: 87 LACNIC Prefixes per ASN: 5.67 LACNIC Region origin ASes announcing only one prefix: 36 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 6.4 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 34 Number of LACNIC addresses announced to Internet: 1528576 Equivalent to 0 /8s, 23 /16s and 83 /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: 678 Total AfriNIC prefixes after maximum aggregation: 181 AfriNIC Deaggregation factor: 3.75 Prefixes being announced from the AfriNIC address blocks: 678 Unique aggregates announced from the AfriNIC address blocks: 248 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 13.29 AfriNIC Region origin ASes announcing only one prefix: 25 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 1173504 Equivalent to 0 /8s, 17 /16s and 232 /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 575 2140 460 SINET-AS Research Organization of Infor 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 170 329 118 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 55824 22 2 17 NKN-CORE-NW NKN Core Network, IN 10148 19 20 18 UNIMELB-AS-AP The University of Melbour 38022 18 3 13 REANNZ-NZ-AP REANNZ National Research a 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 53 62 7 UNIVHAWAII, US 25977 44 10 15 HCCS, US 18558 40 4 26 NETBLK-RCOEK, US 46115 34 2 2 LUTHER, US 271 32 23 28 BCNET-AS, CA 376 32 4 31 RISQ-AS, CA 5786 30 2 23 UPRENET, PR 3477 26 21 10 NOAA-NWAVE, US 393750 21 16 1 TRUMAN-STATE-UNIVERSITY, 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 680 284 1935 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 559 115 550 106 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 2715 57 101 37 Fundacao Carlos Chagas Filho de Amparo 4270 43 16 1 Red de Interconexion Universitaria, AR 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 3596 33 2 2 Universidad Autonoma Metropolitana, MX 1916 30 73 22 Rede Nacional de Ensino e Pesquisa, BR 271640 27 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 21612 25 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR 28609 17 1 2 Instituto Nupef, BR 11340 14 1 13 Red Universitaria Nacional, CL 262742 14 2 1 Fundacao Universidade Federal do ABC - 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 36914 243 82 3 KENET-AS, KE 2018 110 56 75 TENET-1, ZA 2561 67 4 34 EUN, EG 327687 41 28 3 RENU, UG 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 13 8 2 UG-AS, GH 37654 10 1 6 RwEdNet-AS, RW 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 575 2140 460 SINET-AS Research Organization of Infor 680 284 1935 249 DFN Verein zur Foerderung eines Deutsch 36914 243 82 3 KENET-AS, KE 786 186 1775 183 JANET Jisc Services Limited, GB 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 170 329 118 AARNET-AS-AP Australian Academic and Re 559 115 550 106 SWITCH Peering requests: peering@switch 2018 110 56 75 TENET-1, ZA 1103 96 1518 85 SURFNET-NL SURFnet, The Netherlands, NL 2614 95 27 75 ROEDUNET, RO Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 243 240 KENET-AS, KE 58647 175 173 KAGAWAU-AS Kagawa University, JP 7575 170 52 AARNET-AS-AP Australian Academic and Research N 6325 64 51 ILLINOIS-CENTURY, US 6360 53 46 UNIVHAWAII, US 4270 43 42 Red de Interconexion Universitaria, AR 327687 41 38 RENU, UG 680 284 35 DFN Verein zur Foerderung eines Deutschen Forsc 2018 110 35 TENET-1, ZA 2561 67 33 EUN, EG 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 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 /16:1044 /17:194 /18:179 /19:228 /20:303 /21:407 /22:636 /23:679 /24:4095 /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 230 243 KENET-AS, KE 46115 32 34 LUTHER, US 200521 31 54 SEAP-AGE, ES 25977 30 44 HCCS, US 37182 30 31 TERNET, TZ 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 327700 29 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) ---------------------------------------------- 5:15 12:1 14:13 23:1 24:2 31:7 35:3 38:3 40:1 41:142 44:4 45:19 46:5 49:4 62:9 63:2 64:24 66:10 67:37 69:6 74:39 76:5 77:9 78:3 79:10 80:17 81:28 82:8 83:6 84:8 85:42 86:2 87:1 89:10 91:40 92:1 93:4 94:4 95:4 97:2 98:2 102:11 103:116 104:8 108:1 109:7 123:8 125:1 128:46 129:24 130:8 131:32 132:13 133:149 134:12 136:32 137:27 138:9 139:2 140:9 141:1 142:4 143:10 144:3 145:2 146:16 147:9 148:41 149:5 150:21 151:2 152:47 153:12 154:13 155:15 156:10 157:18 158:4 159:6 160:25 161:4 162:5 163:21 164:2 167:9 168:49 169:2 170:50 171:1 172:2 173:1 177:7 179:5 180:7 181:1 185:44 186:2 187:2 188:13 189:3 190:3 191:26 192:756 193:343 194:145 195:87 196:66 197:146 198:91 199:51 200:68 201:18 202:224 203:171 204:97 205:30 206:41 207:31 208:28 209:18 210:3 212:57 213:5 216:11 217:11 219:5 220:1 End of report