IPv4 R&E Routing Table Report 20:00 GMT Fri 27 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: 6043 Prefixes after maximum aggregation (per Origin AS): 4357 Deaggregation factor: 1.39 Unique aggregates announced (without unneeded subnets): 4669 Number of IPv4 prefixes with a valid ROA: 2393 Number of IPv4 prefixes with an invalid ROA: 6 Number of IPv4 prefixes with no ROA: 3644 Total ASes present in the Internet Routing Table: 1147 Prefixes per ASN: 5.27 Origin-only ASes present in the Internet Routing Table: 951 Origin ASes announcing only one prefix: 496 Transit ASes present in the Internet Routing Table: 196 Transit-only ASes present in the Internet Routing Table: 63 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 12 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: 41135 Number of 32-bit ASNs visible in the Routing Table: 259 Prefixes from 32-bit ASNs in the Routing Table: 607 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: 80055808 Equivalent to 4 /8s, 197 /16s and 142 /24s Percentage of available address space announced: 2.2 Percentage of allocated address space announced: 2.2 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: 962 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 1624 Total APNIC prefixes after maximum aggregation: 1088 APNIC Deaggregation factor: 1.49 Prefixes being announced from the APNIC address blocks: 1625 Unique aggregates announced from the APNIC address blocks: 1259 APNIC Region origin ASes present in the Internet Routing Table: 226 APNIC Prefixes per ASN: 7.19 APNIC Region origin ASes announcing only one prefix: 105 APNIC Region transit ASes present in the Internet Routing Table: 15 Average APNIC Region AS path length visible: 2.7 Max APNIC Region AS path length visible: 8 Number of APNIC region 32-bit ASNs visible in the Routing Table: 68 Number of APNIC addresses announced to Internet: 18578432 Equivalent to 1 /8s, 27 /16s and 124 /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: 314 Total ARIN prefixes after maximum aggregation: 215 ARIN Deaggregation factor: 1.46 Prefixes being announced from the ARIN address blocks: 322 Unique aggregates announced from the ARIN address blocks: 254 ARIN Region origin ASes present in the Internet Routing Table: 104 ARIN Prefixes per ASN: 3.10 ARIN Region origin ASes announcing only one prefix: 47 ARIN Region transit ASes present in the Internet Routing Table: 45 Average ARIN Region AS path length visible: 4.9 Max ARIN Region AS path length visible: 9 Number of ARIN region 32-bit ASNs visible in the Routing Table: 15 Number of ARIN addresses announced to Internet: 2288128 Equivalent to 0 /8s, 34 /16s and 234 /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: 3396 Total RIPE prefixes after maximum aggregation: 2849 RIPE Deaggregation factor: 1.19 Prefixes being announced from the RIPE address blocks: 3387 Unique aggregates announced from the RIPE address blocks: 2867 RIPE Region origin ASes present in the Internet Routing Table: 672 RIPE Prefixes per ASN: 5.04 RIPE Region origin ASes announcing only one prefix: 301 RIPE Region transit ASes present in the Internet Routing Table: 100 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: 57770752 Equivalent to 3 /8s, 113 /16s and 131 /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: 102 Total LACNIC prefixes after maximum aggregation: 65 LACNIC Deaggregation factor: 1.57 Prefixes being announced from the LACNIC address blocks: 102 Unique aggregates announced from the LACNIC address blocks: 86 LACNIC Region origin ASes present in the Internet Routing Table: 33 LACNIC Prefixes per ASN: 3.09 LACNIC Region origin ASes announcing only one prefix: 19 LACNIC Region transit ASes present in the Internet Routing Table: 13 Average LACNIC Region AS path length visible: 5.7 Max LACNIC Region AS path length visible: 10 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 10 Number of LACNIC addresses announced to Internet: 346880 Equivalent to 0 /8s, 5 /16s and 75 /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: 606 Total AfriNIC prefixes after maximum aggregation: 139 AfriNIC Deaggregation factor: 4.36 Prefixes being announced from the AfriNIC address blocks: 606 Unique aggregates announced from the AfriNIC address blocks: 202 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 12.62 AfriNIC Region origin ASes announcing only one prefix: 24 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: 27 Number of AfriNIC addresses announced to Internet: 1071360 Equivalent to 0 /8s, 16 /16s and 89 /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 459 SINET-AS Research Organization of Infor 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 119 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 6360 54 62 7 UNIVHAWAII, US 19899 15 16 1 MDC-EDU, US 30220 15 1 11 SWTELCOOP, US 32559 12 2 10 AMHERST-COLLEGE, US 33670 11 1 9 NOVASOUTHEASTERNAS, US 5786 8 1 7 UPRENET, PR 23294 7 1 4 ULM-1, US 376 6 0 5 RISQ-AS, CA 668 6 0 5 DNIC-AS-00668, US 22215 6 1 6 BHSU, 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 680 282 1919 250 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 1916 21 5 16 Rede Nacional de Ensino e Pesquisa, BR 28609 17 1 2 Instituto Nupef, BR 52888 10 7 6 UNIVERSIDADE FEDERAL DE SAO CARLOS, BR 52750 9 1 1 Fundacao Centros de Ref. em Tecnologias 278 4 0 3 Universidad Nacional Autonoma de Mexico 28301 4 1 1 Departamento de Educacao e Cultura do E 3640 3 14 3 C I C E S E, MX 262534 3 0 3 Laboratorio Nacional de Computacao Cien 4270 2 0 2 Red de Interconexion Universitaria, AR 16596 2 2 2 Universidad Autonoma del Estado de Baja 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 246 82 3 KENET-AS, KE 2561 67 4 34 EUN, EG 2018 44 38 35 TENET-1, ZA 327687 44 28 3 RENU, UG 3208 32 2 1 ARN, DZ 327700 31 16 1 MoRENet, MZ 37182 30 8 1 TERNET, TZ 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 459 SINET-AS Research Organization of Infor 680 282 1919 250 DFN Verein zur Foerderung eines Deutsch 36914 246 82 3 KENET-AS, KE 786 186 1775 183 JANET Jisc Services Limited, GB 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 119 AARNET-AS-AP Australian Academic and Re 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 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 246 243 KENET-AS, KE 58647 175 173 KAGAWAU-AS Kagawa University, JP 7575 172 53 AARNET-AS-AP Australian Academic and Research N 6360 54 47 UNIVHAWAII, US 327687 44 41 RENU, UG 2561 67 33 EUN, EG 200521 53 33 SEAP-AGE, ES 680 282 32 DFN Verein zur Foerderung eines Deutschen Forsc 3208 32 31 ARN, DZ 327700 31 30 MoRENet, MZ 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 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, 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 /15:50 /16:910 /17:135 /18:108 /19:179 /20:247 /21:330 /22:531 /23:547 /24:2992 /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 233 246 KENET-AS, KE 200521 30 53 SEAP-AGE, ES 37182 29 30 TERNET, TZ 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 2614 17 95 ROEDUNET, RO 28609 16 17 Instituto Nupef, BR 28949 15 15 TUSNET-AS 8, Kliment Ohridski St., BG Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 5:15 23:1 24:2 31:7 41:139 44:4 45:13 46:5 49:4 62:9 64:6 66:11 74:1 76:1 77:9 78:3 79:10 80:17 81:28 82:6 83:6 84:11 85:42 86:2 87:1 89:10 91:42 92:2 93:4 94:4 95:4 102:14 103:79 104:6 109:7 123:8 125:1 128:37 129:8 130:5 131:16 132:10 133:149 134:12 136:9 137:34 138:8 140:9 143:7 145:2 146:4 147:10 148:12 150:5 151:2 152:4 153:12 154:8 155:4 156:8 157:2 158:1 159:2 160:25 161:4 163:24 168:19 169:2 170:6 171:1 172:2 177:1 180:2 185:44 186:1 188:13 189:3 191:2 192:622 193:343 194:145 195:88 196:28 197:149 198:14 199:9 200:28 201:16 202:223 203:166 204:9 205:6 206:5 207:7 209:1 210:3 212:46 213:5 217:11 219:5 End of report