[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Thu Jun 1 20:10:38 UTC 2023
IPv4 R&E Routing Table Report 20:10 GMT Thu 01 Jun, 2023
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17179
Prefixes after maximum aggregation (per Origin AS): 9862
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11123
Number of IPv4 prefixes with a valid ROA: 4631
Number of IPv4 prefixes with an invalid ROA: 8
Number of IPv4 prefixes with no ROA: 12540
Total ASes present in the Internet Routing Table: 2655
Prefixes per ASN: 6.47
Origin-only ASes present in the Internet Routing Table: 2297
Origin ASes announcing only one prefix: 1023
Transit ASes present in the Internet Routing Table: 358
Transit-only ASes present in the Internet Routing Table: 68
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 19
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: 41995
Number of 32-bit ASNs visible in the Routing Table: 616
Prefixes from 32-bit ASNs in the Routing Table: 1740
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: 3
Number of addresses announced to Internet: 195486848
Equivalent to 11 /8s, 166 /16s and 228 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 1957
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3933
Total APNIC prefixes after maximum aggregation: 2113
APNIC Deaggregation factor: 1.86
Prefixes being announced from the APNIC address blocks: 3934
Unique aggregates announced from the APNIC address blocks: 2521
APNIC Region origin ASes present in the Internet Routing Table: 554
APNIC Prefixes per ASN: 7.10
APNIC Region origin ASes announcing only one prefix: 245
APNIC Region transit ASes present in the Internet Routing Table: 51
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 219
Number of APNIC addresses announced to Internet: 44947456
Equivalent to 2 /8s, 173 /16s and 216 /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, 131072-153913
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: 7196
Total ARIN prefixes after maximum aggregation: 4133
ARIN Deaggregation factor: 1.74
Prefixes being announced from the ARIN address blocks: 7210
Unique aggregates announced from the ARIN address blocks: 4654
ARIN Region origin ASes present in the Internet Routing Table: 1164
ARIN Prefixes per ASN: 6.19
ARIN Region origin ASes announcing only one prefix: 415
ARIN Region transit ASes present in the Internet Routing Table: 156
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 182
Number of ARIN addresses announced to Internet: 85920512
Equivalent to 5 /8s, 31 /16s and 11 /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: 3599
Total RIPE prefixes after maximum aggregation: 2866
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3587
Unique aggregates announced from the RIPE address blocks: 2894
RIPE Region origin ASes present in the Internet Routing Table: 679
RIPE Prefixes per ASN: 5.28
RIPE Region origin ASes announcing only one prefix: 296
RIPE Region transit ASes present in the Internet Routing Table: 106
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 142
Number of RIPE addresses announced to Internet: 58003072
Equivalent to 3 /8s, 117 /16s and 14 /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: 1482
Total LACNIC prefixes after maximum aggregation: 566
LACNIC Deaggregation factor: 2.62
Prefixes being announced from the LACNIC address blocks: 1480
Unique aggregates announced from the LACNIC address blocks: 788
LACNIC Region origin ASes present in the Internet Routing Table: 159
LACNIC Prefixes per ASN: 9.31
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4146432
Equivalent to 0 /8s, 63 /16s and 69 /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: 966
Total AfriNIC prefixes after maximum aggregation: 181
AfriNIC Deaggregation factor: 5.34
Prefixes being announced from the AfriNIC address blocks: 965
Unique aggregates announced from the AfriNIC address blocks: 263
AfriNIC Region origin ASes present in the Internet Routing Table: 29
AfriNIC Prefixes per ASN: 33.28
AfriNIC Region origin ASes announcing only one prefix: 10
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 10
Number of AfriNIC addresses announced to Internet: 2468352
Equivalent to 0 /8s, 37 /16s and 170 /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 595 2154 465 SINET-AS Research Organization of Infor
1237 190 74 139 KREONET-AS-KR KISTI, KR
58647 178 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 329 119 AARNET-AS-AP Australian Academic and Re
55824 119 18 12 NKN-CORE-NW NKN Core Network, IN
4538 110 4160 69 ERX-CERNET-BKB China Education and Rese
4621 69 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
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 202 178 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2152 134 507 91 CSUNET-NW, US
18558 134 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
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 138 24 5 ISU Internet Services Unit ISU, SA
559 112 533 104 SWITCH Peering requests: peering at 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 74 465 74 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/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 221 208 43 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
11340 103 24 47 Red Universitaria Nacional, CL
1251 60 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
4270 44 16 1 Red de Interconexion Universitaria, AR
61468 43 3 15 CEDIA, EC
28571 41 40 18 UNIVERSIDADE DE SAO PAULO, BR
28614 38 2 2 Fundacao Universidade Regional de Blume
19611 37 17 2 Associacao Antonio Vieira - Unisinos, B
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 379 319 72 TENET-1, ZA
36914 255 82 3 KENET-AS, KE
2561 67 4 34 EUN, EG
327687 59 28 3 RENU, UG
8094 48 48 15 PUKNET, ZA
327700 37 16 1 MoRENet, MZ
3208 32 2 1 ARN, DZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 595 2154 465 SINET-AS Research Organization of Infor
2018 379 319 72 TENET-1, ZA
680 283 1919 249 DFN Verein zur Foerderung eines Deutsch
36914 255 82 3 KENET-AS, KE
1916 221 208 43 Rede Nacional de Ensino e Pesquisa, BR
376 202 178 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 190 74 139 KREONET-AS-KR KISTI, KR
786 186 1775 183 JANET Jisc Services Limited, GB
58647 178 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 379 307 TENET-1, ZA
36914 255 252 KENET-AS, KE
5786 198 197 UPRENET, PR
1916 221 178 Rede Nacional de Ensino e Pesquisa, BR
58647 178 176 KAGAWAU-AS Kagawa University, JP
8895 138 133 ISU Internet Services Unit ISU, SA
18558 134 130 NETBLK-RCOEK, US
55824 119 107 NKN-CORE-NW NKN Core Network, IN
2920 107 100 LACOE, US
81 129 97 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/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/CERNET/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
202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /14:31 /15:117 /16:1903 /17:402 /18:424
/19:518 /20:742 /21:774 /22:1381 /23:1363 /24:9486
/25:3 /26:3 /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 243 255 KENET-AS, KE
8895 133 138 ISU Internet Services Unit ISU, SA
23024 52 113 OCDE, US
32440 37 59 LONI, US
327700 33 37 MoRENet, MZ
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 55 SEAP-AGE, ES
25977 30 44 HCCS, US
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:1 14:89 23:6
24:3 31:7 35:4 38:9 40:1 41:113
44:5 45:37 46:5 47:1 49:6 50:1
52:1 59:18 61:3 62:11 63:4 64:50
65:1 66:33 67:41 68:2 69:19 70:2
71:1 72:7 74:50 76:40 77:9 78:3
79:10 80:17 81:26 82:7 83:6 84:12
85:42 86:10 87:1 89:10 91:48 92:2
93:4 94:4 95:2 96:5 97:1 98:2
101:4 102:11 103:301 104:81 108:8 109:9
110:2 111:16 114:23 116:6 117:61 118:32
119:3 121:19 122:8 123:8 125:1 128:67
129:40 130:88 131:54 132:61 133:155 134:95
136:198 137:87 138:10 139:6 140:33 141:1
142:39 143:29 144:22 145:2 146:130 147:54
148:192 149:12 150:130 151:10 152:144 153:14
154:30 155:64 156:67 157:29 158:15 159:18
160:27 161:20 162:19 163:75 164:10 165:51
166:1 167:16 168:124 169:8 170:62 171:1
172:3 173:7 175:30 176:8 177:6 179:12
180:14 181:1 182:1 184:3 185:50 186:3
187:17 188:13 189:3 190:18 191:36 192:1265
193:341 194:146 195:108 196:165 197:158 198:427
199:239 200:312 201:38 202:550 203:421 204:335
205:124 206:168 207:155 208:69 209:113 210:109
211:6 212:169 213:5 216:86 217:10 218:3
219:6 220:17 222:2
End of report
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