IPv4 R&E Routing Table Report 20:00 GMT Wed 05 Apr, 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: 18847 Prefixes after maximum aggregation (per Origin AS): 10656 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 11844 Number of IPv4 prefixes with a valid ROA: 4674 Number of IPv4 prefixes with an invalid ROA: 12 Number of IPv4 prefixes with no ROA: 14161 Total ASes present in the Internet Routing Table: 2795 Prefixes per ASN: 6.74 Origin-only ASes present in the Internet Routing Table: 2412 Origin ASes announcing only one prefix: 1080 Transit ASes present in the Internet Routing Table: 383 Transit-only ASes present in the Internet Routing Table: 70 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 5.1 Max AS path length visible: 21 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 3 Number of instances of unregistered ASNs: 3 Number of 32-bit ASNs allocated by the RIRs: 41605 Number of 32-bit ASNs visible in the Routing Table: 651 Prefixes from 32-bit ASNs in the Routing Table: 1813 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: 2 Number of addresses announced to Internet: 204241152 Equivalent to 12 /8s, 44 /16s and 121 /24s Percentage of available address space announced: 5.5 Percentage of allocated address space announced: 5.5 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: 2100 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4681 Total APNIC prefixes after maximum aggregation: 2309 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4683 Unique aggregates announced from the APNIC address blocks: 2630 APNIC Region origin ASes present in the Internet Routing Table: 578 APNIC Prefixes per ASN: 8.10 APNIC Region origin ASes announcing only one prefix: 248 APNIC Region transit ASes present in the Internet Routing Table: 62 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 226 Number of APNIC addresses announced to Internet: 45846528 Equivalent to 2 /8s, 187 /16s and 144 /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: 8149 Total ARIN prefixes after maximum aggregation: 4723 ARIN Deaggregation factor: 1.73 Prefixes being announced from the ARIN address blocks: 8163 Unique aggregates announced from the ARIN address blocks: 5263 ARIN Region origin ASes present in the Internet Routing Table: 1258 ARIN Prefixes per ASN: 6.49 ARIN Region origin ASes announcing only one prefix: 451 ARIN Region transit ASes present in the Internet Routing Table: 166 Average ARIN Region AS path length visible: 6.1 Max ARIN Region AS path length visible: 21 Number of ARIN region 32-bit ASNs visible in the Routing Table: 195 Number of ARIN addresses announced to Internet: 93767680 Equivalent to 5 /8s, 150 /16s and 200 /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: 3564 Total RIPE prefixes after maximum aggregation: 2857 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3553 Unique aggregates announced from the RIPE address blocks: 2883 RIPE Region origin ASes present in the Internet Routing Table: 681 RIPE Prefixes per ASN: 5.22 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 101 Average RIPE Region AS path length visible: 3.9 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 141 Number of RIPE addresses announced to Internet: 57909248 Equivalent to 3 /8s, 115 /16s and 160 /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: 1434 Total LACNIC prefixes after maximum aggregation: 558 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1431 Unique aggregates announced from the LACNIC address blocks: 775 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 9.23 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 6.7 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4070656 Equivalent to 0 /8s, 62 /16s and 29 /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: 1016 Total AfriNIC prefixes after maximum aggregation: 206 AfriNIC Deaggregation factor: 4.93 Prefixes being announced from the AfriNIC address blocks: 1015 Unique aggregates announced from the AfriNIC address blocks: 291 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 19.90 AfriNIC Region origin ASes announcing only one prefix: 25 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 4.8 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27 Number of AfriNIC addresses announced to Internet: 2646272 Equivalent to 0 /8s, 40 /16s and 97 /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 594 2160 464 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 1237 189 74 139 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 119 18 12 NKN-CORE-NW NKN Core Network, IN 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 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 2152 236 507 94 CSUNET-NW, US 668 216 636 179 DNIC-AS-00668, US 5786 199 16 1 UPRENET, PR 376 197 178 147 RISQ-AS, CA 18558 139 18 4 NETBLK-RCOEK, US 81 129 521 32 NCREN, US 23024 113 7 17 OCDE, US 2920 107 34 7 LACOE, US 32531 90 6 60 FORDHAM-UNIVERSITY, US 21976 85 51 18 NJEDGE-NET, 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 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 8895 137 24 5 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 1103 95 1518 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 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 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 1916 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 100 24 46 Red Universitaria Nacional, CL 1251 59 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 45 16 1 Red de Interconexion Universitaria, AR 61468 42 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 28571 37 40 18 UNIVERSIDADE DE SAO PAULO, 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 382 319 72 TENET-1, ZA 36914 257 82 3 KENET-AS, KE 2561 67 4 34 EUN, EG 327687 63 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 3208 32 2 1 ARN, DZ 327700 32 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 13 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 594 2160 464 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 2018 382 319 72 TENET-1, ZA 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 257 82 3 KENET-AS, KE 2152 236 507 94 CSUNET-NW, US 1916 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 668 216 636 179 DNIC-AS-00668, US 5786 199 16 1 UPRENET, PR 376 197 178 147 RISQ-AS, CA Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 434 410 CSTNET-AS-AP Computer Network Information Cente 2018 382 310 TENET-1, ZA 36914 257 254 KENET-AS, KE 5786 199 198 UPRENET, PR 1916 223 180 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 2152 236 142 CSUNET-NW, US 18558 139 135 NETBLK-RCOEK, US 8895 137 132 ISU Internet Services Unit ISU, SA 55824 119 107 NKN-CORE-NW NKN Core Network, IN 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 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 11537 INTERNET2-RESEARCH-EDU, US 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 /9:1 /10:2 /11:1 /12:10 /13:18 /14:33 /15:122 /16:1993 /17:412 /18:445 /19:566 /20:880 /21:872 /22:1502 /23:1591 /24:10395 /25:0 /26:0 /27:1 /28:3 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 244 257 KENET-AS, KE 8895 132 137 ISU Internet Services Unit ISU, SA 23024 52 113 OCDE, US 32440 37 59 LONI, US 18632 34 66 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 25977 30 44 HCCS, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:2 12:1 14:89 23:7 24:3 31:7 35:6 38:9 40:1 41:107 42:10 44:5 45:40 46:5 47:1 49:6 50:4 52:1 58:1 59:20 60:4 61:3 62:11 63:37 64:59 65:5 66:48 67:44 68:8 69:19 70:2 71:1 72:7 74:50 76:43 77:9 78:3 79:10 80:17 81:28 82:7 83:6 84:11 85:42 86:5 87:1 89:10 91:48 92:2 93:4 94:4 95:2 96:5 97:2 98:2 101:6 102:16 103:305 104:77 107:16 108:10 109:11 110:2 111:16 114:23 116:6 117:61 118:32 119:21 121:28 122:8 123:8 124:39 125:4 128:86 129:42 130:87 131:59 132:56 133:157 134:102 136:199 137:91 138:9 139:6 140:54 141:1 142:39 143:29 144:26 145:2 146:128 147:56 148:193 149:12 150:130 151:9 152:144 153:14 154:31 155:55 156:67 157:34 158:36 159:115 160:27 161:21 162:23 163:77 164:10 165:51 166:1 167:16 168:123 169:7 170:79 171:1 172:3 173:7 175:31 176:8 177:9 179:9 180:15 181:1 182:1 184:3 185:49 186:3 187:18 188:13 189:3 190:18 191:36 192:1352 193:344 194:145 195:90 196:169 197:160 198:527 199:279 200:277 201:38 202:644 203:430 204:365 205:134 206:196 207:180 208:71 209:132 210:185 211:17 212:170 213:5 214:8 216:87 217:10 218:22 219:6 220:17 222:5 223:4 End of report